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Nestl BM, Nebel BA, Resch V, Schürmann M, Tischler D. The Development and Opportunities of Predictive Biotechnology. Chembiochem 2024:e202300863. [PMID: 38713151 DOI: 10.1002/cbic.202300863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 04/05/2024] [Indexed: 05/08/2024]
Abstract
Recent advances in bioeconomy allow a holistic view of existing and new process chains and enable novel production routines continuously advanced by academia and industry. All this progress benefits from a growing number of prediction tools that have found their way into the field. For example, automated genome annotations, tools for building model structures of proteins, and structural protein prediction methods such as AlphaFold2TM or RoseTTAFold have gained popularity in recent years. Recently, it has become apparent that more and more AI-based tools are being developed and used for biocatalysis and biotechnology. This is an excellent opportunity for academia and industry to accelerate advancements in the field further. Biotechnology, as a rapidly growing interdisciplinary field, stands to benefit greatly from these developments.
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Affiliation(s)
- Bettina M Nestl
- Joint working group on biotransformations of the Association for General and Applied Microbiology VAAM, the Society for Chemical Engineering, Biotechnology DECHEMA, Theodor-Heuss-Allee 25, 60486, Frankfurt, Germany
- Innophore GmbH, Am Eisernen Tor 3, 8010, Graz, Austria
| | - Bernd A Nebel
- Innophore GmbH, Am Eisernen Tor 3, 8010, Graz, Austria
| | - Verena Resch
- Innophore GmbH, Am Eisernen Tor 3, 8010, Graz, Austria
| | - Martin Schürmann
- Joint working group on biotransformations of the Association for General and Applied Microbiology VAAM, the Society for Chemical Engineering, Biotechnology DECHEMA, Theodor-Heuss-Allee 25, 60486, Frankfurt, Germany
- InnoSyn B. V., Urmonderbaan 22, 6167 RD, Geleen, The Netherlands
- SynSilico B. V., Urmonderbaan 22, 6167 RD, Geleen, The Netherlands
| | - Dirk Tischler
- Joint working group on biotransformations of the Association for General and Applied Microbiology VAAM, the Society for Chemical Engineering, Biotechnology DECHEMA, Theodor-Heuss-Allee 25, 60486, Frankfurt, Germany
- Microbial Biotechnology, Ruhr University Bochum, Universitätsstrasse 150, 44780, Bochum, Germany
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2
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Alcántara AR, Domínguez de María P, Littlechild JA, Schürmann M, Sheldon RA, Wohlgemuth R. Preface to Special Issue on Biocatalysis as Key to Sustainable Industrial Chemistry. ChemSusChem 2022; 15:e202200640. [PMID: 35514198 DOI: 10.1002/cssc.202200640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In their Editorial for the Special Issue on Biocatalysis as Key to Sustainable Industrial Chemistry, Guest Editors Andrés Alcántara, Pablo Domínguez de María, Jennifer Littlechild, and Roland Wohlgemuth and their co-workers on the European Society of Applied Biocatalysis' (ESAB) Working Group on Sustainable Chemistry Martin Schürmann and Roger Sheldon discuss the Special Issue and the importance of biocatalysis in carrying out cutting-edge industrial chemistry in a sustainable way, as well as the future prospects for the field.
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Affiliation(s)
- Andrés R Alcántara
- Department of Organic and Pharmaceutical Chemistry (QUICIFARM), Complutense University of Madrid (UCM), 28040, Madrid, Spain
| | | | - Jennifer A Littlechild
- Henry Wellcome Building for Biocatalysis Department of Biosciences, University of Exeter, Stocker Road, Exeter, EX4 4QD, United Kingdom
| | | | - Roger A Sheldon
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Braamfontein, Johannesburg, South Africa
| | - Roland Wohlgemuth
- Institute of Molecular and Industrial Biotechnology, Lodz University of Technology, 90-537, Lodz, Poland
- Swiss Coordination Committee for Biotechnology, 8021, Zurich, Switzerland
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3
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Alcántara AR, Domínguez de María P, Littlechild JA, Schürmann M, Sheldon RA, Wohlgemuth R. Biocatalysis as Key to Sustainable Industrial Chemistry. ChemSusChem 2022; 15:e202200709. [PMID: 35445559 DOI: 10.1002/cssc.202200709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Invited for this month's cover is the Working Group Sustainable Chemistry of the European Society of Applied Biocatalysis (ESAB). The image shows the significant contributions of Biocatalysis to science, industry, society, and environment as a technology of first choice for Sustainable Chemistry in the 21st century. The Perspective itself is available at 10.1002/cssc.202102709.
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Affiliation(s)
- Andrés R Alcántara
- Department of Chemistry in Pharmaceutical Sciences (QUICIFARM), Complutense University of Madrid (UCM), 28040-, Madrid, Spain
| | - Pablo Domínguez de María
- Sustainable Momentum, SL, Av. Ansite 3, 4-6, 35011, Las Palmas de Gran Canaria, Canary Is., Spain
| | - Jennifer A Littlechild
- Henry Wellcome Building for Biocatalysis, Biosciences, University of Exeter, Stocker Road, Exeter, EX4 4QD, United Kingdom
| | | | - Roger A Sheldon
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Braamfontein, Johannesburg, South Africa
| | - Roland Wohlgemuth
- Institute of Molecular and Industrial Biotechnology, Lodz University of Technology, 90-537, Lodz, Poland
- Swiss Coordination Committee for Biotechnology, 8021, Zurich, Switzerland
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4
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Alcántara AR, Domínguez de María P, Littlechild JA, Schürmann M, Sheldon RA, Wohlgemuth R. Biocatalysis as Key to Sustainable Industrial Chemistry. ChemSusChem 2022; 15:e202102709. [PMID: 35238475 DOI: 10.1002/cssc.202102709] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/10/2022] [Indexed: 06/14/2023]
Abstract
The role and power of biocatalysis in sustainable chemistry has been continuously brought forward step by step to its present outstanding position. The problem-solving capabilities of biocatalysis have been realized by numerous substantial achievements in biology, chemistry and engineering. Advances and breakthroughs in the life sciences and interdisciplinary cooperation with chemistry have clearly accelerated the implementation of biocatalytic synthesis in modern chemistry. Resource-efficient biocatalytic manufacturing processes have already provided numerous benefits to sustainable chemistry as well as customer-centric value creation in the pharmaceutical, food, flavor, fragrance, vitamin, agrochemical, polymer, specialty, and fine chemical industries. Biocatalysis can make significant contributions not only to manufacturing processes, but also to the design of completely new value-creation chains. Biocatalysis can now be considered as a key enabling technology to implement sustainable chemistry.
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Affiliation(s)
- Andrés R Alcántara
- Department of Chemistry in Pharmaceutical Sciences (QUICIFARM), Complutense University of Madrid (UCM), 28040-, Madrid, Spain
| | - Pablo Domínguez de María
- Sustainable Momentum, SL, Av. Ansite 3, 4-6, 35011, Las Palmas de Gran Canaria, Canary Is., Spain
| | - Jennifer A Littlechild
- Henry Wellcome Building for Biocatalysis, Biosciences, University of Exeter, Stocker Road, Exeter, EX4 4QD, United Kingdom
| | | | - Roger A Sheldon
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Braamfontein, Johannesburg, South Africa
| | - Roland Wohlgemuth
- Institute of Molecular and Industrial Biotechnology, Lodz University of Technology, 90-537, Lodz, Poland
- Swiss Coordination Committee for Biotechnology, 8021, Zurich, Switzerland
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5
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Biermann M, Schürmann M, Schmitges T, Vogel A, Brummund J. A Highly Efficient and Sustainable Biocatalytic Oxidation Process toward (R)-Undecavertol. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00415] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Marc Biermann
- Givaudan Schweiz AG, Kemptpark 50, 8310 Kemptthal, Switzerland
| | | | | | | | - Jan Brummund
- InnoSyn B.V., Urmonderbaan 22, 6167 RD Geleen, The Netherlands
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6
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Chen H, Schürmann M, Keeble D. Inhibiting saccades to hands: High-level visual processes modulate oculomotor control. J Vis 2021. [DOI: 10.1167/jov.21.9.2246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Hsinyuan Chen
- University of Nottingham Malaysia
- University of Nottingham UK
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7
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Telzerow A, Paris J, Håkansson M, González‐Sabín J, Ríos‐Lombardía N, Gröger H, Morís F, Schürmann M, Schwab H, Steiner K. Expanding the Toolbox of R-Selective Amine Transaminases by Identification and Characterization of New Members. Chembiochem 2021; 22:1232-1242. [PMID: 33242357 PMCID: PMC8048526 DOI: 10.1002/cbic.202000692] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 11/22/2020] [Indexed: 12/16/2022]
Abstract
Amine transaminases (ATAs) are used to synthesize enantiomerically pure amines, which are building blocks for pharmaceuticals and agrochemicals. R-selective ATAs belong to the fold type IV PLP-dependent enzymes, and different sequence-, structure- and substrate scope-based features have been identified in the past decade. However, our knowledge is still restricted due to the limited number of characterized (R)-ATAs, with additional bias towards fungal origin. We aimed to expand the toolbox of (R)-ATAs and contribute to the understanding of this enzyme subfamily. We identified and characterized four new (R)-ATAs. The ATA from Exophiala sideris contains a motif characteristic for d-ATAs, which was previously believed to be a disqualifying factor for (R)-ATA activity. The crystal structure of the ATA from Shinella is the first from a Gram-negative bacterium. The ATAs from Pseudonocardia acaciae and Tetrasphaera japonica are the first characterized (R)-ATAs with a shortened/missing N-terminal helix. The active-site charges vary significantly between the new and known ATAs, correlating with their diverging substrate scope.
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Affiliation(s)
- Aline Telzerow
- Institute of Molecular BiotechnologyGraz University of TechnologyPetersgasse 148010GrazAustria
- InnoSyn B.V.Urmonderbaan 226167RDGeleenThe Netherlands
| | - Juraj Paris
- Chair of Industrial Organic Chemistry and BiotechnologyFaculty of ChemistryBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany
- EntreChem SLVivero Ciencias de la Salud33011OviedoSpain
| | | | | | | | - Harald Gröger
- Chair of Industrial Organic Chemistry and BiotechnologyFaculty of ChemistryBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany
| | | | | | - Helmut Schwab
- Institute of Molecular BiotechnologyGraz University of TechnologyPetersgasse 148010GrazAustria
| | - Kerstin Steiner
- Institute of Molecular BiotechnologyGraz University of TechnologyPetersgasse 148010GrazAustria
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8
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Bartsch S, Brummund J, Köpke S, Straatman H, Vogel A, Schürmann M. Optimization of Alcohol Dehydrogenase for Industrial Scale Oxidation of Lactols. Biotechnol J 2020; 15:e2000171. [DOI: 10.1002/biot.202000171] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Jan Brummund
- InnoSyn B.V. Urmonderbaan 22 Geleen NL‐6167RD The Netherlands
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9
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Busch F, Brummund J, Calderini E, Schürmann M, Kourist R. Cofactor Generation Cascade for α-Ketoglutarate and Fe(II)-Dependent Dioxygenases. ACS Sustain Chem Eng 2020; 8:8604-8612. [PMID: 32953283 PMCID: PMC7493210 DOI: 10.1021/acssuschemeng.0c01122] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 05/01/2020] [Indexed: 05/04/2023]
Abstract
Fe(II)- and α-ketoglutarate dependent dioxygenases have emerged as important catalysts for the preparation of non-natural amino acids. The stoichiometric supply of the cosubstrate α-ketoglutarate (αKG) is an important cost factor. A combination of the N-succinyl amino acid hydroxylase SadA with an l-glutamate oxidase (LGOX) allowed for coupling in situ production of αKG to stereoselective αKG-dependent dioxygenases in a one-pot/two-step cascade reaction. Both enzymes were used as immobilized enzymes and tested in a preparative scale setup under process-near conditions. Oxygen supply, enzyme, and substrate loading of the oxidation of glutamate were investigated under controlled reaction conditions on a small scale before upscaling to a 1 L stirred tank reactor. LGOX was applied with a substrate concentration of 73.6 g/L (339 mM) and reached a space-time yield of 14.2 g/L/h. Additionally, the enzyme was recycled up to 3 times. The hydroxylase SadA reached a space-time yield of 1.2 g/L/h at a product concentration of 9.3 g/L (40 mM). For both cascade reactions, the supply with oxygen was identified as a critical parameter. The results underline the robustness and suitability of α-ketoglutarate dependent dioxygenases for application outside of living cells.
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Affiliation(s)
- Florian Busch
- InnoSyn
B.V., Urmonderbaan 22, NL-6167 RD Geleen The Netherlands
- Junior
Research Group for Microbial Biotechnology, Ruhr-Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Jan Brummund
- InnoSyn
B.V., Urmonderbaan 22, NL-6167 RD Geleen The Netherlands
| | - Elia Calderini
- Institute
of Molecular Biotechnology, Graz University
of Technology, Petersgasse 14, A-8010 Graz, Austria
| | - Martin Schürmann
- InnoSyn
B.V., Urmonderbaan 22, NL-6167 RD Geleen The Netherlands
| | - Robert Kourist
- Institute
of Molecular Biotechnology, Graz University
of Technology, Petersgasse 14, A-8010 Graz, Austria
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10
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Solé J, Brummund J, Caminal G, Álvaro G, Schürmann M, Guillén M. Enzymatic Synthesis of Trimethyl-ε-caprolactone: Process Intensification and Demonstration on a 100 L Scale. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00185] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jordi Solé
- Bioprocess Engineering and Applied Biocatalysis Group, Department of Chemical Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
| | - Jan Brummund
- InnoSyn B.V., Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Gloria Caminal
- Institut de Química Avançada de Catalunya (IQAC), 08034 Barcelona, Spain
| | - Gregorio Álvaro
- Bioprocess Engineering and Applied Biocatalysis Group, Department of Chemical Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
| | | | - Marina Guillén
- Bioprocess Engineering and Applied Biocatalysis Group, Department of Chemical Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
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Engleder M, Strohmeier GA, Weber H, Steinkellner G, Leitner E, Müller M, Mink D, Schürmann M, Gruber K, Pichler H. Weiterentwicklung der Substrattoleranz von
Elizabethkingia meningoseptica
Oleathydratase zur regio‐ und stereoselektiven Hydratisierung von Ölsäurederivaten. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901462] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Matthias Engleder
- ACIB GmbH – Austrian Centre of Industrial Biotechnology Petersgasse 14 8010 Graz Österreich
| | - Gernot A. Strohmeier
- ACIB GmbH – Austrian Centre of Industrial Biotechnology Petersgasse 14 8010 Graz Österreich
- Institut für Organische ChemieTechnische Universität Graz, NAWI Graz Stremayrgasse 9 8010 Graz Österreich
| | - Hansjörg Weber
- Institut für Organische ChemieTechnische Universität Graz, NAWI Graz Stremayrgasse 9 8010 Graz Österreich
| | - Georg Steinkellner
- ACIB GmbH – Austrian Centre of Industrial Biotechnology Petersgasse 14 8010 Graz Österreich
- Innophore GmbH Am Eisernen Tor 3 8010 Graz Österreich
| | - Erich Leitner
- Institut für Analytische Chemie und LebensmittelchemieTechnische Universität Graz, NAWI Graz Stremayrgasse 9 8010 Graz Österreich
| | - Monika Müller
- InnoSyn B.V. Urmonderbaan 22 6167 RD Geleen Niederlande
| | - Daniel Mink
- InnoSyn B.V. Urmonderbaan 22 6167 RD Geleen Niederlande
| | | | - Karl Gruber
- ACIB GmbH – Austrian Centre of Industrial Biotechnology Petersgasse 14 8010 Graz Österreich
- Institut für Molekulare BiowissenschaftenUniversität Graz, NAWI Graz, BioTechMed Graz Humboldtstraße 50 8010 Graz Österreich
| | - Harald Pichler
- Institut für Molekulare BiotechnologieTechnische Universität Graz, NAWI Graz, BioTechMed Graz Petersgasse 14 8010 Graz Österreich
- ACIB GmbH – Austrian Centre of Industrial Biotechnology Petersgasse 14 8010 Graz Österreich
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12
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Engleder M, Strohmeier GA, Weber H, Steinkellner G, Leitner E, Müller M, Mink D, Schürmann M, Gruber K, Pichler H. Evolving the Promiscuity of Elizabethkingia meningoseptica Oleate Hydratase for the Regio- and Stereoselective Hydration of Oleic Acid Derivatives. Angew Chem Int Ed Engl 2019; 58:7480-7484. [PMID: 30848865 PMCID: PMC6563698 DOI: 10.1002/anie.201901462] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Indexed: 12/15/2022]
Abstract
The addition of water to non-activated carbon-carbon double bonds catalyzed by fatty acid hydratases (FAHYs) allows for highly regio- and stereoselective oxyfunctionalization of renewable oil feedstock. So far, the applicability of FAHYs has been limited to free fatty acids, mainly owing to the requirement of a carboxylate function for substrate recognition and binding. Herein, we describe for the first time the hydration of oleic acid (OA) derivatives lacking this free carboxylate by the oleate hydratase from Elizabethkingia meningoseptica (OhyA). Molecular docking of OA to the OhyA 3D-structure and a sequence alignment uncovered conserved amino acid residues at the entrance of the substrate channel as target positions for enzyme engineering. Exchange of selected amino acids gave rise to OhyA variants which showed up to an 18-fold improved conversion of OA derivatives, while retaining the excellent regio- and stereoselectivity in the olefin hydration reaction.
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Affiliation(s)
- Matthias Engleder
- ACIB GmbH—Austrian Centre of Industrial BiotechnologyPetersgasse 148010GrazAustria
| | - Gernot A. Strohmeier
- ACIB GmbH—Austrian Centre of Industrial BiotechnologyPetersgasse 148010GrazAustria
- Institute of Organic ChemistryGraz University of Technology, NAWI GrazStremayrgasse 98010GrazAustria
| | - Hansjörg Weber
- Institute of Organic ChemistryGraz University of Technology, NAWI GrazStremayrgasse 98010GrazAustria
| | - Georg Steinkellner
- ACIB GmbH—Austrian Centre of Industrial BiotechnologyPetersgasse 148010GrazAustria
- Innophore GmbHAm Eisernen Tor 38010GrazAustria
| | - Erich Leitner
- Institute of Analytical Chemistry and Food ChemistryGraz University of Technology, NAWI GrazStremayrgasse 98010GrazAustria
| | - Monika Müller
- InnoSyn B.V.Urmonderbaan 226167 RDGeleenThe Netherlands
| | - Daniel Mink
- InnoSyn B.V.Urmonderbaan 226167 RDGeleenThe Netherlands
| | | | - Karl Gruber
- ACIB GmbH—Austrian Centre of Industrial BiotechnologyPetersgasse 148010GrazAustria
- Institute of Molecular BiosciencesUniversity of Graz, NAWI Graz, BioTechMed GrazHumboldtstrasse 508010GrazAustria
| | - Harald Pichler
- Institute of Molecular BiotechnologyGraz University of Technology, NAWI Graz, BioTechMed GrazPetersgasse 148010GrazAustria
- ACIB GmbH—Austrian Centre of Industrial BiotechnologyPetersgasse 148010GrazAustria
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13
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Premkumar P, Santo MGE, Onwumere J, Schürmann M, Kumari V, Blanco S, Baker J, Kuipers E. Neural responses to criticism and praise vary with schizotypy and perceived emotional support. Int J Psychophysiol 2019; 145:109-118. [PMID: 31116957 DOI: 10.1016/j.ijpsycho.2019.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 05/14/2019] [Accepted: 05/16/2019] [Indexed: 02/06/2023]
Abstract
Schizotypy is a latent organisation of a cluster of personality styles, such as magical thinking, disorganisation and anhedonia, which are in the normal range of the psychosis continuum. Schizotypy relates to an increased likelihood of perceiving expressed emotion (EE). EE is characterised by criticism, rejection, and emotional over-involvement and less warmth from a close relative. Neuroimaging studies have found normal frontal lobe activation to EE-criticism in people with high schizotypy. Alternatively, electroencephalography measures emotion processing, such as frontal theta power and occipital alpha power. Frontal theta power responds to cognitive and affective processes and occipital alpha power denotes less consciousness and emotional attention. This study aimed to determine the relation of these electroencephalography responses during criticism and praise to perceived emotional support. Participants (n = 32) representing the full (low-to-high) range of positive schizotypy listened to and rated the self-relevance of EE-like criticism and praise and affectively neutral comments while undergoing electroencephalography. Participants completed self-report measures of schizotypy, depression and anxiety. A subset of those with a high positive schizotypy score (n = 22) completed a measure of perceived EE - lack of emotional support. Higher perceived EE - lack of emotional support correlated with lower frontal theta power and lower occipital alpha power during criticism and praise in schizotypal participants. The findings suggest that these neural responses may relate to less perceived emotional support in people with high schizotypy, of which a reduction of frontal theta power denotes less emotional arousal and lower occipital alpha power denotes more alertness to emotional information may relate to less perceived emotional support in people with high schizotypy.
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Affiliation(s)
- Preethi Premkumar
- Department of Psychology, Nottingham Trent University, Nottingham, UK.
| | - Miguel Granja Espírito Santo
- Department of Psychology, Nottingham Trent University, Nottingham, UK; School of Psychology, University of Nottingham, Nottingham, UK
| | - Juliana Onwumere
- King's College London, Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, London, UK; NIHR Biomedical Research Centre for Mental Health, South London and Maudsley NHS Foundation Trust, London, London, UK
| | | | - Veena Kumari
- Centre for Cognitive Neuroscience, College of Life and Health Sciences, Brunel University London, Uxbridge, UK
| | - Stephanie Blanco
- Department of Psychology, Nottingham Trent University, Nottingham, UK
| | - Joshua Baker
- Department of Psychology, Nottingham Trent University, Nottingham, UK
| | - Elizabeth Kuipers
- King's College London, Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, London, UK; NIHR Biomedical Research Centre for Mental Health, South London and Maudsley NHS Foundation Trust, London, London, UK
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14
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Telzerow A, Paris J, Håkansson M, González-Sabín J, Ríos-Lombardía N, Schürmann M, Gröger H, Morís F, Kourist R, Schwab H, Steiner K. Amine Transaminase from Exophiala Xenobiotica—Crystal Structure and Engineering of a Fold IV Transaminase that Naturally Converts Biaryl Ketones. ACS Catal 2018. [DOI: 10.1021/acscatal.8b04524] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Aline Telzerow
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
- InnoSyn B. V., Urmonderbaan 22, 6167RD Geleen, The Netherlands
| | - Juraj Paris
- Chair of Organic Chemistry I, Faculty of Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
- Entrechem, S.L., Vivero Ciencias de la Salud, Santo Domingo de Guzmán,
s/n, 33011 Oviedo, Spain
| | - Maria Håkansson
- SARomics Biostructures AB, Medicon Village, Scheelevägen 2, 22381 Lund, Sweden
| | - Javier González-Sabín
- Entrechem, S.L., Vivero Ciencias de la Salud, Santo Domingo de Guzmán,
s/n, 33011 Oviedo, Spain
| | - Nicolás Ríos-Lombardía
- Entrechem, S.L., Vivero Ciencias de la Salud, Santo Domingo de Guzmán,
s/n, 33011 Oviedo, Spain
| | | | - Harald Gröger
- Chair of Organic Chemistry I, Faculty of Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Francisco Morís
- Entrechem, S.L., Vivero Ciencias de la Salud, Santo Domingo de Guzmán,
s/n, 33011 Oviedo, Spain
| | - Robert Kourist
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
| | - Helmut Schwab
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
| | - Kerstin Steiner
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
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15
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Schürmann M, Olms C. Shade Stability of Polymer Infiltrated and Resin Nano Ceramic Crowns after Dynamic Chewing Simulation. Eur J Prosthodont Restor Dent 2018; 26:174-183. [PMID: 30406976 DOI: 10.1922/ejprd_01807schurmann10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Investigation of the shade stability of polymer-infiltrated and resin nano ceramic crowns before and after artificial aging. METHOD 40 identical crowns of each of the materials VITA Enamic (VE) and Lava Ultimate (LU) were manufactured. Half of the crowns went through a dynamic chewing simulation (CS) with thermocycling. Material subgroups: 1. VE, 2. VE/CS, 3. LU, 4. LU/CS (each n=20). These were divided into 4 groups (n=5) and distributed in usual stain solutions. The shade of each crown was measured occlusally and vestibularly before and after insertion using a spectrophotometer (n=5). The data were analyzed using ANOVA and Tukey's test (p≤0.05). RESULTS Sum scores (SSC) of the occlusal ΔE values: LU/CS: 7.99, VE: 5.75 VE/CS: 5.44, LU: 5.17. The total sum of the SSC yielded, for the materials: SSCtotal(VE): 20.0 and SSCtotal(LU): 24.0. SIGNIFICANCE Occlusally, there were significant shade differences for VE/CS (p=0.025) and LU/CS (p=0.014) between red wine and distilled water. LU/CS is significantly more clearly stained occlusally by coffee in comparison to the other three material subgroups (VE: p=0.007, LU: p=0.026, VE/CS: p=0.013). CONCLUSIONS The shade stability of VITA Enamic crowns is superior to that of Lava Ultimate crowns. Only Lava Ultimate is affected by chewing simulation.
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Girardo S, Träber N, Wagner K, Cojoc G, Herold C, Goswami R, Schlüßler R, Abuhattum S, Taubenberger A, Reichel F, Mokbel D, Herbig M, Schürmann M, Müller P, Heida T, Jacobi A, Ulbricht E, Thiele J, Werner C, Guck J. Standardized microgel beads as elastic cell mechanical probes. J Mater Chem B 2018; 6:6245-6261. [PMID: 32254615 DOI: 10.1039/c8tb01421c] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Cell mechanical measurements are gaining increasing interest in biological and biomedical studies. However, there are no standardized calibration particles available that permit the cross-comparison of different measurement techniques operating at different stresses and time-scales. Here we present the rational design, production, and comprehensive characterization of poly-acrylamide (PAAm) microgel beads mimicking size and overall mechanics of biological cells. We produced mono-disperse beads at rates of 20-60 kHz by means of a microfluidic droplet generator, where the pre-gel composition was adjusted to tune the beads' elasticity in the range of cell and tissue relevant mechanical properties. We verified bead homogeneity by optical diffraction tomography and Brillouin microscopy. Consistent elastic behavior of microgel beads at different shear rates was confirmed by AFM-enabled nanoindentation and real-time deformability cytometry (RT-DC). The remaining inherent variability in elastic modulus was rationalized using polymer theory and effectively reduced by sorting based on forward-scattering using conventional flow cytometry. Our results show that PAAm microgel beads can be standardized as mechanical probes, to serve not only for validation and calibration of cell mechanical measurements, but also as cell-scale stress sensors.
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Affiliation(s)
- S Girardo
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47/49, 01307 Dresden, Germany.
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17
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McDowell T, Holmes NP, Sunderland A, Schürmann M. TMS over the supramarginal gyrus delays selection of appropriate grasp orientation during reaching and grasping tools for use. Cortex 2018; 103:117-129. [DOI: 10.1016/j.cortex.2018.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 01/16/2018] [Accepted: 03/01/2018] [Indexed: 10/17/2022]
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18
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Engleder M, Horvat M, Emmerstorfer-Augustin A, Wriessnegger T, Gabriel S, Strohmeier G, Weber H, Müller M, Kaluzna I, Mink D, Schürmann M, Pichler H. Recombinant expression, purification and biochemical characterization of kievitone hydratase from Nectria haematococca. PLoS One 2018; 13:e0192653. [PMID: 29420618 PMCID: PMC5805349 DOI: 10.1371/journal.pone.0192653] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 01/26/2018] [Indexed: 01/29/2023] Open
Abstract
Kievitone hydratase catalyzes the addition of water to the double bond of the prenyl moiety of plant isoflavonoid kievitone and, thereby, forms the tertiary alcohol hydroxy-kievitone. In nature, this conversion is associated with a defense mechanism of fungal pathogens against phytoalexins generated by host plants after infection. As of today, a gene sequence coding for kievitone hydratase activity has only been identified and characterized in Fusarium solani f. sp. phaseoli. Here, we report on the identification of a putative kievitone hydratase sequence in Nectria haematococca (NhKHS), the teleomorph state of F. solani, based on in silico sequence analyses. After heterologous expression of the enzyme in the methylotrophic yeast Pichia pastoris, we have confirmed its kievitone hydration activity and have assessed its biochemical properties and substrate specificity. Purified recombinant NhKHS is obviously a homodimeric glycoprotein. Due to its good activity for the readily available chalcone derivative xanthohumol (XN), this compound was selected as a model substrate for biochemical studies. The optimal pH and temperature for hydratase activity were 6.0 and 35°C, respectively, and apparent Vmax and Km values for hydration of XN were 7.16 μmol min-1 mg-1 and 0.98 ± 0.13 mM, respectively. Due to its catalytic properties and apparent substrate promiscuity, NhKHS is a promising enzyme for the biocatalytic production of tertiary alcohols.
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Affiliation(s)
- Matthias Engleder
- acib—Austrian Centre of Industrial Biotechnology, Graz, Austria
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed Graz, Graz, Austria
| | - Melissa Horvat
- acib—Austrian Centre of Industrial Biotechnology, Graz, Austria
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed Graz, Graz, Austria
| | | | | | - Stefanie Gabriel
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed Graz, Graz, Austria
| | - Gernot Strohmeier
- acib—Austrian Centre of Industrial Biotechnology, Graz, Austria
- Institute of Organic Chemistry, Graz University of Technology, NAWI Graz, Graz, Austria
| | - Hansjörg Weber
- Institute of Organic Chemistry, Graz University of Technology, NAWI Graz, Graz, Austria
| | - Monika Müller
- DSM Ahead R&D—Innovative Synthesis, Geleen, The Netherlands
| | - Iwona Kaluzna
- DSM Ahead R&D—Innovative Synthesis, Geleen, The Netherlands
| | - Daniel Mink
- DSM Ahead R&D—Innovative Synthesis, Geleen, The Netherlands
| | | | - Harald Pichler
- acib—Austrian Centre of Industrial Biotechnology, Graz, Austria
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed Graz, Graz, Austria
- * E-mail:
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19
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Dennig A, Weingartner AM, Kardashliev T, Müller CA, Tassano E, Schürmann M, Ruff AJ, Schwaneberg U. An Enzymatic Route to α-Tocopherol Synthons: Aromatic Hydroxylation of Pseudocumene and Mesitylene with P450 BM3. Chemistry 2017; 23:17981-17991. [PMID: 28990705 DOI: 10.1002/chem.201703647] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Indexed: 02/06/2023]
Abstract
Aromatic hydroxylation of pseudocumene (1 a) and mesitylene (1 b) with P450 BM3 yields key phenolic building blocks for α-tocopherol synthesis. The P450 BM3 wild-type (WT) catalyzed selective aromatic hydroxylation of 1 b (94 %), whereas 1 a was hydroxylated to a large extent on benzylic positions (46-64 %). Site-saturation mutagenesis generated a new P450 BM3 mutant, herein named "variant M3" (R47S, Y51W, A330F, I401M), with significantly increased coupling efficiency (3- to 8-fold) and activity (75- to 230-fold) for the conversion of 1 a and 1 b. Additional π-π interactions introduced by mutation A330F improved not only productivity and coupling efficiency, but also selectivity toward aromatic hydroxylation of 1 a (61 to 75 %). Under continuous nicotinamide adenine dinucleotide phosphate recycling, the novel P450 BM3 variant M3 was able to produce the key tocopherol precursor trimethylhydroquinone (3 a; 35 % selectivity; 0.18 mg mL-1 ) directly from 1 a. In the case of 1 b, overoxidation leads to dearomatization and the formation of a valuable p-quinol synthon that can directly serve as an educt for the synthesis of 3 a. Detailed product pattern analysis, substrate docking, and mechanistic considerations support the hypothesis that 1 a binds in an inverted orientation in the active site of P450 BM3 WT, relative to P450 BM3 variant M3, to allow this change in chemoselectivity. This study provides an enzymatic route to key phenolic synthons for α-tocopherols and the first catalytic and mechanistic insights into direct aromatic hydroxylation and dearomatization of trimethylbenzenes with O2 .
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Affiliation(s)
- Alexander Dennig
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany
| | | | - Tsvetan Kardashliev
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany
| | | | - Erika Tassano
- Department of Chemistry, University of Graz, Heinrichstrasse 28, 8010, Graz, Austria
| | - Martin Schürmann
- DSM Ahead R&D BV/DSM Innovative Synthesis, Post address: P.O. Box 1066, 6160 BB, Geleen, The Netherlands
| | - Anna Joëlle Ruff
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany.,DWI-Leibniz Institut für Interaktive Materialien, Forckenbeckstraße 50, 52074, Aachen, Germany
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20
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Schwinde S, Schürmann M, Kaiser N, Tünnermann A. Investigation of SiO 2-Al 2O 3 nanolaminates for protection of silver reflectors. Appl Opt 2017; 56:C41-C46. [PMID: 28158050 DOI: 10.1364/ao.56.000c41] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
H2S and particles from the atmosphere can damage silver reflectors. These defects lead to scattering and a reduction of reflectivity. With regard to these risks, the suitability of sputtered SiO2, Al2O3, and SiO2-Al2O3 nanolaminates for the protection of Ag was analyzed. The optical properties, protection properties against H2S, solubility, film stress, and protection properties against particle-induced defect formation have been investigated. Especially in the case of particle-induced defects on protected Ag, differences between the protective coatings are considerable, and the nanolaminate layers have advantageous properties.
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21
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Stenzel O, Wilbrandt S, Wolf J, Schürmann M, Kaiser N, Ristau D, Ehlers H, Carstens F, Schippel S, Mechold L, Rauhut R, Kennedy M, Bischoff M, Nowitzki T, Zöller A, Hagedorn H, Reus H, Hegemann T, Starke K, Harhausen J, Foest R, Schumacher J. Investigation of the refractive index repeatability for tantalum pentoxide coatings, prepared by physical vapor film deposition techniques. Appl Opt 2017; 56:C193-C200. [PMID: 28158073 DOI: 10.1364/ao.56.00c193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Random effects in the repeatability of refractive index and absorption edge position of tantalum pentoxide layers prepared by plasma-ion-assisted electron-beam evaporation, ion beam sputtering, and magnetron sputtering are investigated and quantified. Standard deviations in refractive index between 4*10-4 and 4*10-3 have been obtained. Here, lowest standard deviations in refractive index close to our detection threshold could be achieved by both ion beam sputtering and plasma-ion-assisted deposition. In relation to the corresponding mean values, the standard deviations in band-edge position and refractive index are of similar order.
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22
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Santo MG, Sánchez-Panchuelo RM, Francis S, Schürmann M. Images of Distorted Fingers Activate Posterior Primary Somatosensory Cortex: Individual Subject Analysis of Ultra High-Field fMRI Data (7T). Int J Psychophysiol 2016. [DOI: 10.1016/j.ijpsycho.2016.07.443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Wriessnegger T, Moser S, Emmerstorfer-Augustin A, Leitner E, Müller M, Kaluzna I, Schürmann M, Mink D, Pichler H. Enhancing cytochrome P450-mediated conversions in P. pastoris through RAD52 over-expression and optimizing the cultivation conditions. Fungal Genet Biol 2016; 89:114-125. [DOI: 10.1016/j.fgb.2016.02.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 02/12/2016] [Accepted: 02/15/2016] [Indexed: 11/15/2022]
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24
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Kaluzna I, Schmitges T, Straatman H, van Tegelen D, Müller M, Schürmann M, Mink D. Enabling Selective and Sustainable P450 Oxygenation Technology. Production of 4-Hydroxy-α-isophorone on Kilogram Scale. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.5b00282] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Iwona Kaluzna
- DSM Ahead R&D BV—Innovative Synthesis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Thomas Schmitges
- DSM Ahead R&D BV—Innovative Synthesis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Harrie Straatman
- DSM Ahead R&D BV—Innovative Synthesis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Dennis van Tegelen
- DSM Ahead R&D BV—Innovative Synthesis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Monika Müller
- DSM Ahead R&D BV—Innovative Synthesis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Martin Schürmann
- DSM Ahead R&D BV—Innovative Synthesis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Daniel Mink
- DSM Ahead R&D BV—Innovative Synthesis, P.O. Box 18, 6160 MD Geleen, The Netherlands
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25
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Turk SCHJ, Kloosterman WP, Ninaber DK, Kolen KPAM, Knutova J, Suir E, Schürmann M, Raemakers-Franken PC, Müller M, de Wildeman SMA, Raamsdonk LM, van der Pol R, Wu L, Temudo MF, van der Hoeven RAM, Akeroyd M, van der Stoel RE, Noorman HJ, Bovenberg RAL, Trefzer AC. Metabolic Engineering toward Sustainable Production of Nylon-6. ACS Synth Biol 2016; 5:65-73. [PMID: 26511532 DOI: 10.1021/acssynbio.5b00129] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nylon-6 is a bulk polymer used for many applications. It consists of the non-natural building block 6-aminocaproic acid, the linear form of caprolactam. Via a retro-synthetic approach, two synthetic pathways were identified for the fermentative production of 6-aminocaproic acid. Both pathways require yet unreported novel biocatalytic steps. We demonstrated proof of these bioconversions by in vitro enzyme assays with a set of selected candidate proteins expressed in Escherichia coli. One of the biosynthetic pathways starts with 2-oxoglutarate and contains bioconversions of the ketoacid elongation pathway known from methanogenic archaea. This pathway was selected for implementation in E. coli and yielded 6-aminocaproic acid at levels up to 160 mg/L in lab-scale batch fermentations. The total amount of 6-aminocaproic acid and related intermediates generated by this pathway exceeded 2 g/L in lab-scale fed-batch fermentations, indicating its potential for further optimization toward large-scale sustainable production of nylon-6.
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Affiliation(s)
| | - Wigard P. Kloosterman
- DSM Biotechnology Center, PO Box 1, 2600 MA Delft, The Netherlands
- University Medical Center Utrecht, PO Box 85060, 3508 AB Utrecht, The Netherlands
| | - Dennis K. Ninaber
- DSM Biotechnology Center, PO Box 1, 2600 MA Delft, The Netherlands
- Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | | | - Julia Knutova
- DSM Biotechnology Center, PO Box 1, 2600 MA Delft, The Netherlands
| | - Erwin Suir
- DSM Biotechnology Center, PO Box 1, 2600 MA Delft, The Netherlands
- BioscienZ, Goeseelsstraat 10, 4817 MV Breda, The Netherlands
| | - Martin Schürmann
- DSM Innovative Synthesis, PO Box 18, 6160 MD Geleen, The Netherlands
| | | | - Monika Müller
- DSM Innovative Synthesis, PO Box 18, 6160 MD Geleen, The Netherlands
| | | | | | - Ruud van der Pol
- DSM Biotechnology Center, PO Box 1, 2600 MA Delft, The Netherlands
| | - Liang Wu
- DSM Biotechnology Center, PO Box 1, 2600 MA Delft, The Netherlands
| | | | | | - Michiel Akeroyd
- DSM Biotechnology Center, PO Box 1, 2600 MA Delft, The Netherlands
| | | | - Henk J. Noorman
- DSM Biotechnology Center, PO Box 1, 2600 MA Delft, The Netherlands
| | - Roel A. L. Bovenberg
- DSM Biotechnology Center, PO Box 1, 2600 MA Delft, The Netherlands
- Synthetic
Biology and Cell Engineering, Groningen Biomolecular Sciences and
Biotechnology Institute, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Axel C. Trefzer
- DSM Biotechnology Center, PO Box 1, 2600 MA Delft, The Netherlands
- Life Technologies, GeneArt, Im Gewerbepark B35, 93059 Regensburg, Germany
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26
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Meier RJ, Gundersen MT, Woodley JM, Schürmann M. A Practical and Fast Method To Predict the Thermodynamic Preference of ω-Transaminase-Based Transformations. ChemCatChem 2015. [DOI: 10.1002/cctc.201500347] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Engleder M, Pavkov-Keller T, Emmerstorfer A, Hromic A, Schrempf S, Steinkellner G, Wriessnegger T, Leitner E, Strohmeier GA, Kaluzna I, Mink D, Schürmann M, Wallner S, Macheroux P, Gruber K, Pichler H. Structure-Based Mechanism of Oleate Hydratase from Elizabethkingia meningoseptica. Chembiochem 2015; 16:1730-4. [PMID: 26077980 PMCID: PMC4552966 DOI: 10.1002/cbic.201500269] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Indexed: 11/13/2022]
Abstract
Hydratases provide access to secondary and tertiary alcohols by regio- and/or stereospecifically adding water to carbon-carbon double bonds. Thereby, hydroxy groups are introduced without the need for costly cofactor recycling, and that makes this approach highly interesting on an industrial scale. Here we present the first crystal structure of a recombinant oleate hydratase originating from Elizabethkingia meningoseptica in the presence of flavin adenine dinucleotide (FAD). A structure-based mutagenesis study targeting active site residues identified E122 and Y241 as crucial for the activation of a water molecule and for protonation of the double bond, respectively. Moreover, we also observed that two-electron reduction of FAD results in a sevenfold increase in the substrate hydration rate. We propose the first reaction mechanism for this enzyme class that explains the requirement for the flavin cofactor and the involvement of conserved amino acid residues in this regio- and stereoselective hydration.
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Affiliation(s)
- Matthias Engleder
- Institute of Molecular Biotechnology, NAWI Graz, Graz University of Technology, Petersgasse 14/2, 8010 Graz (Austria).,ACIB-Austrian Centre of Industrial Biotechnology, Petersgasse 14/2, 8010 Graz (Austria)
| | - Tea Pavkov-Keller
- ACIB-Austrian Centre of Industrial Biotechnology, Petersgasse 14/2, 8010 Graz (Austria).,Institute of Molecular Biosciences, NAWI Graz, University of Graz, Humboldtstrasse 50/3, 8010 Graz (Austria)
| | - Anita Emmerstorfer
- ACIB-Austrian Centre of Industrial Biotechnology, Petersgasse 14/2, 8010 Graz (Austria)
| | - Altijana Hromic
- ACIB-Austrian Centre of Industrial Biotechnology, Petersgasse 14/2, 8010 Graz (Austria).,Institute of Molecular Biosciences, NAWI Graz, University of Graz, Humboldtstrasse 50/3, 8010 Graz (Austria)
| | - Sabine Schrempf
- Institute of Molecular Biotechnology, NAWI Graz, Graz University of Technology, Petersgasse 14/2, 8010 Graz (Austria)
| | - Georg Steinkellner
- ACIB-Austrian Centre of Industrial Biotechnology, Petersgasse 14/2, 8010 Graz (Austria)
| | - Tamara Wriessnegger
- ACIB-Austrian Centre of Industrial Biotechnology, Petersgasse 14/2, 8010 Graz (Austria)
| | - Erich Leitner
- Institute of Analytical Chemistry and Food Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010 Graz (Austria)
| | - Gernot A Strohmeier
- ACIB-Austrian Centre of Industrial Biotechnology, Petersgasse 14/2, 8010 Graz (Austria).,Institute of Organic Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010 Graz (Austria)
| | - Iwona Kaluzna
- DSM Chemical Technology R&D B.V., Innovative Synthesis, Urmonderbaan 22, 6167 RD Geleen (The Netherlands)
| | - Daniel Mink
- DSM Chemical Technology R&D B.V., Innovative Synthesis, Urmonderbaan 22, 6167 RD Geleen (The Netherlands)
| | - Martin Schürmann
- DSM Chemical Technology R&D B.V., Innovative Synthesis, Urmonderbaan 22, 6167 RD Geleen (The Netherlands)
| | - Silvia Wallner
- Institute of Biochemistry, NAWI Graz, Graz University of Technology, Petersgasse 12, 8010 Graz (Austria)
| | - Peter Macheroux
- Institute of Biochemistry, NAWI Graz, Graz University of Technology, Petersgasse 12, 8010 Graz (Austria)
| | - Karl Gruber
- ACIB-Austrian Centre of Industrial Biotechnology, Petersgasse 14/2, 8010 Graz (Austria). .,Institute of Molecular Biosciences, NAWI Graz, University of Graz, Humboldtstrasse 50/3, 8010 Graz (Austria).
| | - Harald Pichler
- Institute of Molecular Biotechnology, NAWI Graz, Graz University of Technology, Petersgasse 14/2, 8010 Graz (Austria). .,ACIB-Austrian Centre of Industrial Biotechnology, Petersgasse 14/2, 8010 Graz (Austria).
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28
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Neto W, Schürmann M, Panella L, Vogel A, Woodley JM. Immobilisation of ω-transaminase for industrial application: Screening and characterisation of commercial ready to use enzyme carriers. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2015.04.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Tufvesson P, Nordblad M, Krühne U, Schürmann M, Vogel A, Wohlgemuth R, Woodley JM. Economic Considerations for Selecting an Amine Donor in Biocatalytic Transamination. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00100] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Pär Tufvesson
- Department
of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Mathias Nordblad
- Department
of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Ulrich Krühne
- Department
of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | | | | | | | - John M. Woodley
- Department
of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
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30
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Halko ML, Mäkelä T, Nummenmaa L, Hlushchuk Y, Schürmann M. Hedonic context modulates risky choices and reward responses in amygdala and dorsal striatum. ACTA ACUST UNITED AC 2015. [DOI: 10.1037/npe0000036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Uhl MK, Oberdorfer G, Steinkellner G, Riegler-Berket L, Mink D, van Assema F, Schürmann M, Gruber K. The crystal structure of D-threonine aldolase from Alcaligenes xylosoxidans provides insight into a metal ion assisted PLP-dependent mechanism. PLoS One 2015; 10:e0124056. [PMID: 25884707 PMCID: PMC4401734 DOI: 10.1371/journal.pone.0124056] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 03/05/2015] [Indexed: 11/23/2022] Open
Abstract
Threonine aldolases catalyze the pyridoxal phosphate (PLP) dependent cleavage of threonine into glycine and acetaldehyde and play a major role in the degradation of this amino acid. In nature, L- as well as D-specific enzymes have been identified, but the exact physiological function of D-threonine aldolases (DTAs) is still largely unknown. Both types of enantio-complementary enzymes have a considerable potential in biocatalysis for the stereospecific synthesis of various β-hydroxy amino acids, which are valuable building blocks for the production of pharmaceuticals. While several structures of L-threonine aldolases (LTAs) have already been determined, no structure of a DTA is available to date. Here, we report on the determination of the crystal structure of the DTA from Alcaligenes xylosoxidans (AxDTA) at 1.5 Å resolution. Our results underline the close relationship of DTAs and alanine racemases and allow the identification of a metal binding site close to the PLP-cofactor in the active site of the enzyme which is consistent with the previous observation that divalent cations are essential for DTA activity. Modeling of AxDTA substrate complexes provides a rationale for this metal dependence and indicates that binding of the β-hydroxy group of the substrate to the metal ion very likely activates this group and facilitates its deprotonation by His193. An equivalent involvement of a metal ion has been implicated in the mechanism of a serine dehydratase, which harbors a metal ion binding site in the vicinity of the PLP cofactor at the same position as in DTA. The structure of AxDTA is completely different to available structures of LTAs. The enantio-complementarity of DTAs and LTAs can be explained by an approximate mirror symmetry of crucial active site residues relative to the PLP-cofactor.
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Affiliation(s)
- Michael K. Uhl
- Austrian Centre of Industrial Biotechnology, Petersgasse 14, 8010, Graz, Austria
| | - Gustav Oberdorfer
- Austrian Centre of Industrial Biotechnology, Petersgasse 14, 8010, Graz, Austria
- Institute of Molecular Biosciences, University of Graz, Humboldtstraße 50/3, 8010, Graz, Austria
| | - Georg Steinkellner
- Austrian Centre of Industrial Biotechnology, Petersgasse 14, 8010, Graz, Austria
| | - Lina Riegler-Berket
- Institute of Molecular Biosciences, University of Graz, Humboldtstraße 50/3, 8010, Graz, Austria
| | - Daniel Mink
- DSM Chemical Technology R&D BV - Innovative Synthesis, 6167, Geleen, The Netherlands
| | - Friso van Assema
- DSM Chemical Technology R&D BV - Innovative Synthesis, 6167, Geleen, The Netherlands
| | - Martin Schürmann
- DSM Chemical Technology R&D BV - Innovative Synthesis, 6167, Geleen, The Netherlands
| | - Karl Gruber
- Austrian Centre of Industrial Biotechnology, Petersgasse 14, 8010, Graz, Austria
- Institute of Molecular Biosciences, University of Graz, Humboldtstraße 50/3, 8010, Graz, Austria
- * E-mail:
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Emmerstorfer A, Wimmer-Teubenbacher M, Wriessnegger T, Leitner E, Müller M, Kaluzna I, Schürmann M, Mink D, Zellnig G, Schwab H, Pichler H. Over-expression ofICE2stabilizes cytochrome P450 reductase inSaccharomyces cerevisiaeandPichia pastoris. Biotechnol J 2015; 10:623-35. [DOI: 10.1002/biot.201400780] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 12/17/2014] [Accepted: 01/09/2015] [Indexed: 01/15/2023]
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Jiang J, Kallemeijn WW, Wright DW, van den Nieuwendijk AMCH, Rohde VC, Folch EC, van den Elst H, Florea BI, Scheij S, Donker-Koopman WE, Verhoek M, Li N, Schürmann M, Mink D, Boot RG, Codée JDC, van der Marel GA, Davies GJ, Aerts JMFG, Overkleeft HS. In vitro and in vivo comparative and competitive activity-based protein profiling of GH29 α-l-fucosidases. Chem Sci 2015; 6:2782-false. [PMID: 29142681 PMCID: PMC5654414 DOI: 10.1039/c4sc03739a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 02/09/2015] [Indexed: 01/07/2023] Open
Abstract
GH29 α-l-fucosidases catalyze the hydrolysis of α-l-fucosidic linkages. Deficiency in human lysosomal α-l-fucosidase (FUCA1) leads to the recessively inherited disorder, fucosidosis. Herein we describe the development of fucopyranose-configured cyclophellitol aziridines as activity-based probes (ABPs) for selective in vitro and in vivo labeling of GH29 α-l-fucosidases from bacteria, mice and man. Crystallographic analysis on bacterial α-l-fucosidase confirms that the ABPs act by covalent modification of the active site nucleophile. Competitive activity-based protein profiling identified l-fuconojirimycin as the single GH29 α-l-fucosidase inhibitor from eight configurational isomers.
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Affiliation(s)
- Jianbing Jiang
- Leiden Institute of Chemistry , Leiden University , P. O. Box 9502 , 2300 RA Leiden , The Netherlands . ;
| | - Wouter W Kallemeijn
- Department of Medical Biochemistry , Academic Medical Center , Meibergdreef 15 , 1105 AZ Amsterdam , The Netherlands
| | - Daniel W Wright
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK
| | | | - Veronica Coco Rohde
- Leiden Institute of Chemistry , Leiden University , P. O. Box 9502 , 2300 RA Leiden , The Netherlands . ;
| | - Elisa Colomina Folch
- Leiden Institute of Chemistry , Leiden University , P. O. Box 9502 , 2300 RA Leiden , The Netherlands . ;
| | - Hans van den Elst
- Leiden Institute of Chemistry , Leiden University , P. O. Box 9502 , 2300 RA Leiden , The Netherlands . ;
| | - Bogdan I Florea
- Leiden Institute of Chemistry , Leiden University , P. O. Box 9502 , 2300 RA Leiden , The Netherlands . ;
| | - Saskia Scheij
- Department of Medical Biochemistry , Academic Medical Center , Meibergdreef 15 , 1105 AZ Amsterdam , The Netherlands
| | - Wilma E Donker-Koopman
- Department of Medical Biochemistry , Academic Medical Center , Meibergdreef 15 , 1105 AZ Amsterdam , The Netherlands
| | - Marri Verhoek
- Department of Medical Biochemistry , Academic Medical Center , Meibergdreef 15 , 1105 AZ Amsterdam , The Netherlands
| | - Nan Li
- Leiden Institute of Chemistry , Leiden University , P. O. Box 9502 , 2300 RA Leiden , The Netherlands . ;
| | - Martin Schürmann
- DSM Innovative Synthesis , Urmonderbaan 22 , NL-6167 RD Geleen , The Netherlands
| | - Daniel Mink
- DSM Innovative Synthesis , Urmonderbaan 22 , NL-6167 RD Geleen , The Netherlands
| | - Rolf G Boot
- Department of Medical Biochemistry , Academic Medical Center , Meibergdreef 15 , 1105 AZ Amsterdam , The Netherlands
| | - Jeroen D C Codée
- Leiden Institute of Chemistry , Leiden University , P. O. Box 9502 , 2300 RA Leiden , The Netherlands . ;
| | - Gijsbert A van der Marel
- Leiden Institute of Chemistry , Leiden University , P. O. Box 9502 , 2300 RA Leiden , The Netherlands . ;
| | - Gideon J Davies
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK
| | - Johannes M F G Aerts
- Leiden Institute of Chemistry , Leiden University , P. O. Box 9502 , 2300 RA Leiden , The Netherlands . ; .,Department of Medical Biochemistry , Academic Medical Center , Meibergdreef 15 , 1105 AZ Amsterdam , The Netherlands
| | - Herman S Overkleeft
- Leiden Institute of Chemistry , Leiden University , P. O. Box 9502 , 2300 RA Leiden , The Netherlands . ;
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Bommarius BR, Schürmann M, Bommarius AS. A novel chimeric amine dehydrogenase shows altered substrate specificity compared to its parent enzymes. Chem Commun (Camb) 2014; 50:14953-5. [DOI: 10.1039/c4cc06527a] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bleckmann P, Englich U, Hermann U, Prass I, Ruhlandt-Senge K, Schürmann M, Schwittekh C, Uhlig F. Synthesis and Reactivity of Novel Bis(stannyl)silanes. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-1999-0916] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Bis(stannyl)silanes of types R3Sn-SiR′2-SnR3 and R2(H)Sn-SiR′2-Sn(H)R2 with R′ being methyl, phenyl, iso-propyl or terf-butyl have been synthesized by treatment of difunctionalized diorganosilanes with alkali stannides (R = Me, tBu; R′= Me, iPr; 1 - 6, 8 ) or with triphenyltin chloride and magnesium (R = Ph; R′ = Me, iPh;Pr; 7, 9). Me3Sn-SitBu2-SnMe3 4, was halogenated using SnCl4, to yield the bis(chlorostannyl)silane 11.
The reaction of bis(stannyl)diorganosilanes R3SnSiR′SnR3 with catalytic amounts of Pd(PPh3)4 resulted in unexpected rearrangements under formation of the silyldistannanes R3SnSnR2SiR′R2. These compounds undergo addition reactions with alkynes. All compounds have been identified by NMR, IR, MS and elemental analysis. Compounds 5, 6 and 7 have also been characterized by X-ray crystallography.
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Affiliation(s)
- P. Bleckmann
- Fachbereich Chemie der Universität Dortmund, Organische Strukturchemie, Otto-Hahn-Straße 6, D-44221 Dortmund, Germany
| | - U. Englich
- Syracuse University, Department of Chemistry, 1-014 Center of Science and Technology, Syracuse, N.Y., USA
| | - U. Hermann
- Fachbereich Chemie der Universität Dortmund, Anorganische Chemie II, Otto-Hahn-Straße 6, D-44221 Dortmund, Germany
| | - I. Prass
- Fachbereich Chemie der Universität Dortmund, Anorganische Chemie II, Otto-Hahn-Straße 6, D-44221 Dortmund, Germany
| | - K. Ruhlandt-Senge
- Syracuse University, Department of Chemistry, 1-014 Center of Science and Technology, Syracuse, N.Y., USA
| | - M. Schürmann
- Fachbereich Chemie der Universität Dortmund, Anorganische Chemie II, Otto-Hahn-Straße 6, D-44221 Dortmund, Germany
| | - C. Schwittekh
- Fachbereich Chemie der Universität Dortmund, Organische Strukturchemie, Otto-Hahn-Straße 6, D-44221 Dortmund, Germany
| | - F. Uhlig
- Fachbereich Chemie der Universität Dortmund, Anorganische Chemie II, Otto-Hahn-Straße 6, D-44221 Dortmund, Germany
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Petschacher B, Staunig N, Müller M, Schürmann M, Mink D, De Wildeman S, Gruber K, Glieder A. Cofactor Specificity Engineering of Streptococcus mutans NADH Oxidase 2 for NAD(P)(+) Regeneration in Biocatalytic Oxidations. Comput Struct Biotechnol J 2014; 9:e201402005. [PMID: 24757503 PMCID: PMC3995211 DOI: 10.5936/csbj.201402005] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 02/16/2014] [Accepted: 02/21/2014] [Indexed: 11/22/2022] Open
Abstract
Soluble water-forming NAD(P)H oxidases constitute a promising NAD(P)(+) regeneration method as they only need oxygen as cosubstrate and produce water as sole byproduct. Moreover, the thermodynamic equilibrium of O2 reduction is a valuable driving force for mostly energetically unfavorable biocatalytic oxidations. Here, we present the generation of an NAD(P)H oxidase with high activity for both cofactors, NADH and NADPH. Starting from the strictly NADH specific water-forming Streptococcus mutans NADH oxidase 2 several rationally designed cofactor binding site mutants were created and kinetic values for NADH and NADPH conversion were determined. Double mutant 193R194H showed comparable high rates and low K m values for NADPH (k cat 20 s(-1), K m 6 µM) and NADH (k cat 25 s(-1), K m 9 µM) with retention of 70% of wild type activity towards NADH. Moreover, by screening of a SeSaM library S. mutans NADH oxidase 2 variants showing predominantly NADPH activity were found, giving further insight into cofactor binding site architecture. Applicability for cofactor regeneration is shown for coupling with alcohol dehydrogenase from Sphyngobium yanoikuyae for 2-heptanone production.
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Affiliation(s)
- Barbara Petschacher
- Austrian Centre of Industrial Biotechnology GmbH, c/o Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
| | - Nicole Staunig
- Austrian Centre of Industrial Biotechnology GmbH, c/o Institute of Molecular Biosciences, University Graz, Humboldtstrasse 50/3, 8010 Graz, Austria
| | - Monika Müller
- DSM Innovative Synthesis B.V., P.O. Box 18, 6160 MD Geleen, Netherlands
| | - Martin Schürmann
- DSM Innovative Synthesis B.V., P.O. Box 18, 6160 MD Geleen, Netherlands
| | - Daniel Mink
- DSM Innovative Synthesis B.V., P.O. Box 18, 6160 MD Geleen, Netherlands
| | | | - Karl Gruber
- Austrian Centre of Industrial Biotechnology GmbH, c/o Institute of Molecular Biosciences, University Graz, Humboldtstrasse 50/3, 8010 Graz, Austria
| | - Anton Glieder
- Austrian Centre of Industrial Biotechnology GmbH, c/o Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
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Creutz P, Schürmann M, Suttorp N. Chronische Berylliose und Lungentuberkulose. Pneumologie 2014. [DOI: 10.1055/s-0034-1367880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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38
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Łyskowski A, Gruber C, Steinkellner G, Schürmann M, Schwab H, Gruber K, Steiner K. Crystal structure of an (R)-selective ω-transaminase from Aspergillus terreus. PLoS One 2014; 9:e87350. [PMID: 24498081 PMCID: PMC3907554 DOI: 10.1371/journal.pone.0087350] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 12/19/2013] [Indexed: 11/18/2022] Open
Abstract
Chiral amines are important building blocks for the synthesis of pharmaceutical products, fine chemicals, and agrochemicals. ω-Transaminases are able to directly synthesize enantiopure chiral amines by catalysing the transfer of an amino group from a primary amino donor to a carbonyl acceptor with pyridoxal 5′-phosphate (PLP) as cofactor. In nature, (S)-selective amine transaminases are more abundant than the (R)-selective enzymes, and therefore more information concerning their structures is available. Here, we present the crystal structure of an (R)-ω-transaminase from Aspergillus terreus determined by X-ray crystallography at a resolution of 1.6 Å. The structure of the protein is a homodimer that displays the typical class IV fold of PLP-dependent aminotransferases. The PLP-cofactor observed in the structure is present in two states (i) covalently bound to the active site lysine (the internal aldimine form) and (ii) as substrate/product adduct (the external aldimine form) and free lysine. Docking studies revealed that (R)-transaminases follow a dual binding mode, in which the large binding pocket can harbour the bulky substituent of the amine or ketone substrate and the α-carboxylate of pyruvate or amino acids, and the small binding pocket accommodates the smaller substituent.
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Affiliation(s)
| | | | | | | | - Helmut Schwab
- ACIB GmbH, c/o TU Graz, Graz, Austria
- Institute of Molecular Biotechnology, TU Graz, Graz, Austria
| | - Karl Gruber
- ACIB GmbH, c/o TU Graz, Graz, Austria
- Institute of Molecular Biosciences, University of Graz, Graz, Austria
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Meadows RE, Mulholland KR, Schürmann M, Golden M, Kierkels H, Meulenbroeks E, Mink D, May O, Squire C, Straatman H, Wells AS. Efficient Synthesis of (S)-1-(5-Fluoropyrimidin-2-yl)ethylamine Using an ω-Transaminase Biocatalyst in a Two-Phase System. Org Process Res Dev 2013. [DOI: 10.1021/op400131h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rebecca E. Meadows
- Pharmaceutical
Development, AstraZeneca, Silk Road Business Park, Macclesfield, SK10 2NA, United Kingdom
| | - Keith R. Mulholland
- Pharmaceutical
Development, AstraZeneca, Silk Road Business Park, Macclesfield, SK10 2NA, United Kingdom
| | - Martin Schürmann
- DSM Innovative Synthesis B.V., Urmonderbaan 22, NL6167RD Geleen, The Netherlands
| | - Michael Golden
- Pharmaceutical
Development, AstraZeneca, Silk Road Business Park, Macclesfield, SK10 2NA, United Kingdom
| | - Hans Kierkels
- DSM Innovative Synthesis B.V., Urmonderbaan 22, NL6167RD Geleen, The Netherlands
| | - Elise Meulenbroeks
- DSM Innovative Synthesis B.V., Urmonderbaan 22, NL6167RD Geleen, The Netherlands
| | - Daniel Mink
- DSM Innovative Synthesis B.V., Urmonderbaan 22, NL6167RD Geleen, The Netherlands
| | - Oliver May
- DSM Innovative Synthesis B.V., Urmonderbaan 22, NL6167RD Geleen, The Netherlands
| | - Christopher Squire
- Pharmaceutical
Development, AstraZeneca, Silk Road Business Park, Macclesfield, SK10 2NA, United Kingdom
| | - Harrie Straatman
- DSM Innovative Synthesis B.V., Urmonderbaan 22, NL6167RD Geleen, The Netherlands
| | - Andrew S. Wells
- Pharmaceutical
Development, AstraZeneca, Silk Road Business Park, Macclesfield, SK10 2NA, United Kingdom
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Meyer HP, Eichhorn E, Hanlon S, Lütz S, Schürmann M, Wohlgemuth R, Coppolecchia R. The use of enzymes in organic synthesis and the life sciences: perspectives from the Swiss Industrial Biocatalysis Consortium (SIBC). Catal Sci Technol 2013. [DOI: 10.1039/c2cy20350b] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Hettwer S, Wilhelm J, Schürmann M, Ebelt H, Hammer D, Amoury M, Hofmann F, Oehme A, Wilhelms D, Kekulé AS, Klöss T, Werdan K. Microbial diagnostics in patients with presumed severe infection in the emergency department. Med Klin Intensivmed Notfmed 2012; 107:53-62. [PMID: 22349478 DOI: 10.1007/s00063-011-0051-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Sepsis in the early stage is a common disease in emergency medicine, and rapid diagnosis is essential. Our aim was to compare pathogen diagnosis using blood cultures (BC) and the multiplex polymerase chain reaction (PCR) test.Methods. At total of 211 patients admitted to the multidisciplinary emergency department of our university hospital between 2006 and 2009 with suspected severe infection from any origin were studied. Blood samples for BC (aerobic and anaerobic) and multiplex PCR were taken for identification of infectious microorganisms immediately after hospital admission. Results of the BC and PCR correlated with procalcitonin concentration (PCT) and clinical diagnosis of sepsis (≥2 positive SIRS criteria) as well as with severity of disease at admission and with clinical outcome measures. RESULTS Results of the BC were available in 200 patients (94.8%) and PCR were available in 119 patients (56.3%), respectively. In total, 87 BC (43.5%) were positive and identified 94 pathogens. In 45 positive PCRs, 47 pathogens (37.8%) were found. Identical results were obtained in 81.4%. In addition, BC identified 9 Gram-positive and 3 Gram-negative bacteria, while PCR added 5 Gram-negative pathogens. Coagulase-negative staphylococci were detected in blood cultures only (n=20, 21.3%), whereas PCR identified significantly more Gram-negative bacteria than BC. In patients with positive PCR results, the PCT level was significantly higher than in patients with negative PCR (15.0±23.3 vs. 8.8±32.8 ng/ml, p<0.001). This difference was not observed for BC (10.6±25.7 vs. 11.6±44.9 ng/ml, p=0.075). The APACHE II score correlated with PCR (19.2±9.1 vs. 15.8±8.9, p<0.05) and was also higher in positive BC (18.7±8.7 vs. 14.4±8.0, p<0.01). Positive PCR and BC were correlated with negative clinical outcomes (e.g., transfer to ICU, mechanical ventilation, renal replacement therapy, death). CONCLUSION In patients admitted with suspected severe infection, a high percentage of positive BC and PCR were observed. Positive findings in the PCR correlate with elevated levels of PCT and high APACHE II scores.
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Affiliation(s)
- S Hettwer
- Department of Medicine III (Cardiology, Angiology and Medical Intensive Care Medicine), University Clinics Halle Ernst-Grube-Str. 40, 06097 Halle (Saale).
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Fischer A, Schmid B, Ellinghaus D, Nothnagel M, Gaede KI, Schürmann M, Lipinski S, Rosenstiel P, Zissel G, Höhne K, Petrek M, Kolek V, Pabst S, Grohé C, Grunewald J, Ronninger M, Eklund A, Padyukov L, Gieger C, Wichmann E, Nebel A, Franke A, Müller-Quernheim J, Hofmann S, Schreiber S. A novel sarcoidosis risk locus for Europeans on chromosome 11q13.1. Pneumologie 2012. [DOI: 10.1055/s-0032-1329831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Moran PM, Rouse JL, Cross B, Corcoran R, Schürmann M. Kamin blocking is associated with reduced medial-frontal gyrus activation: implications for prediction error abnormality in schizophrenia. PLoS One 2012; 7:e43905. [PMID: 23028415 PMCID: PMC3432033 DOI: 10.1371/journal.pone.0043905] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 07/27/2012] [Indexed: 11/17/2022] Open
Abstract
The following study used 3-T functional magnetic resonance imaging (fMRI) to investigate the neural signature of Kamin blocking. Kamin blocking is an associative learning phenomenon seen where prior association of a stimulus (A) with an outcome blocks subsequent learning to an added stimulus (B) when both stimuli are later presented together (AB) with the same outcome. While there are a number of theoretical explanations of Kamin blocking, it is widely considered to exemplify the use of prediction error in learning, where learning occurs in proportion to the difference between expectation and outcome. In Kamin blocking as stimulus A fully predicts the outcome no prediction error is generated by the addition of stimulus B to form the compound stimulus AB, hence learning about it is "blocked". Kamin blocking is disrupted in people with schizophrenia, their relatives and healthy individuals with high psychometrically-defined schizotypy. This disruption supports suggestions that abnormal prediction error is a core deficit that can help to explain the symptoms of schizophrenia. The present study tested 9 healthy volunteers on an f-MRI adaptation of Oades' "mouse in the house task", the only task measuring Kamin blocking that shows disruption in schizophrenia patients that has been independently replicated. Participant's Kamin blocking scores were found to inversely correlate with Kamin-blocking-related activation within the prefrontal cortex, specifically the medial frontal gyrus. The medial frontal gyrus has been associated with the psychological construct of uncertainty, which we suggest is consistent with disrupted Kamin blocking and demonstrated in people with schizophrenia. These data suggest that the medial frontal gyrus merits further investigation as a potential locus of reduced Kamin blocking and abnormal prediction error in schizophrenia.
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Affiliation(s)
- Paula M Moran
- School of Psychology, University of Nottingham, Nottingham, United Kingdom.
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Wilhelm J, Hettwer S, Hammer D, Schürmann M, Christoph A, Amoury M, Klöss T, Finke R, Ebelt H, Werdan K. Outcome prediction using clinical scores and biomarkers in patients with presumed severe infection in the emergency department. Med Klin Intensivmed Notfmed 2012; 107:558-63. [PMID: 22875037 DOI: 10.1007/s00063-012-0147-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Revised: 05/23/2012] [Accepted: 07/03/2012] [Indexed: 12/21/2022]
Abstract
BACKGROUND Severe infections play an important role in the emergency department (ED) and early risk stratification is essential. We compared the prognostic value of APACHE II, SOFA, and MEDS scores, and the biomarkers C-reactive protein (CRP), procalcitonin (PCT), and interleukin 6 (IL-6). METHODS We performed a prospective observational study. Patients aged 18 years or older with a severe infection, from whom blood cultures were taken, were included. RESULTS Two hundred and eleven patients were included. The 30-day mortality rate was 8.5%. All scores and biomarkers showed significant area under the curve (AUC) values of receiver operating characteristic curve analysis for death within 30 days: 0.801 for APACHE II, 0.785 for MEDS, 0.708 for SOFA, 0.693 for CRP, 0.651 for PCT, and 0.716 for IL-6. For treatment in an ICU and need for mechanical ventilation, these parameters had significant AUC values, too. For renal replacement therapy, only APACHE II, SOFA, and PCT showed significant AUC values. According to the trend observed, the AUC values were highest for the APACHE II score. CONCLUSIONS All investigated parameters have a predictive value in patients with an infection in the ED. According to the trend observed, the APACHE II score seems to have the best discriminative power. Use of the APACHE II score already at the time of admission to the ED may be useful for stratifying patients at risk for ICU treatment, thereby using the same score in the ED and the ICU.
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Affiliation(s)
- J Wilhelm
- Department of Medicine III, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, Ernst-Grube-Strasse 40, Halle (Saale), Germany.
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Abstract
Bodily abnormalities in other persons often evoke an uneasy feeling, even disgust. Here, we studied the brain basis of such perceptual salience by presenting static pictures of distorted hand postures to healthy subjects during functional magnetic resonance imaging. Cortical activation sensitive to distorted (vs. natural) finger postures was found-with right-hemispheric dominance-in the primary motor cortex, postcentral somatosensory areas, amygdala, and insula, and bilaterally in the putamen. This activation pattern suggests that the instantaneous "gut feelings" during the observation of bodily distortions in others are related to embodied percepts that also involve affect-related brain areas.
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Affiliation(s)
- Martin Schürmann
- Brain Research Unit, Low Temperature Laboratory, Aalto University School of Science and Technology, FI-00076 AALTO, Espoo, Finland.
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46
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Wilhelm J, Hettwer S, Schürmann M, Bagger S, Gerhardt F, Mundt S, Muschick S, Zimmermann J, Ebelt H, Werdan K. Afterload-related cardiac performance: a hemodynamic parameter with prognostic relevance in patients with sepsis in the Emergency Department. Crit Care 2011. [PMCID: PMC3061701 DOI: 10.1186/cc9491] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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47
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Fischer A, Nothnagel M, Franke A, Jacobs G, Saadati HR, Gaede KI, Rosenstiel P, Schürmann M, Müller-Quernheim J, Schreiber S, Hofmann S. Association of inflammatory bowel disease risk loci with sarcoidosis, and its acute and chronic subphenotypes. Eur Respir J 2010; 37:610-6. [PMID: 20650992 DOI: 10.1183/09031936.00049410] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sarcoidosis is a complex granulomatous inflammatory disorder that shares several clinical and pathogenic features with inflammatory bowel disease (IBD). Postulating a common genetic basis of inflammatory diseases, we tested 106 single-nucleotide polymorphisms (SNPs) that are known or have been suggested to be associated with IBD for a potential association with sarcoidosis and its acute and chronic subphenotypes. We genotyped 1,996 German sarcoidosis patients, comprising 648 acutely and 1,161 chronically affected individuals, 2,622 control subjects, and 342 German trios with affected offspring using SNPlex™ technology. The nonsynonymous SNP rs11209026 (Arg381Gln) in the interleukin (IL)-23 receptor (IL23R) gene was associated with chronic sarcoidosis (OR 0.63; p = 5.58×10(-5)), which was supported by the result of a transmission disequilibrium test analysis in the independent family sample (OR 0.50; p = 0.031). Marker rs12035082 located at chromosome 1q24.3 was found to be associated with the acute subphenotype (OR 1.36; p = 6.80×10(-7)) and rs916977 (HERC2 locus; OR 1.30; p = 4.49×10(-5)) was associated with sarcoidosis. Our results highlight the potential importance of the IL-23 signalling pathway for the development of chronic sarcoidosis. The finding links sarcoidosis pathogenesis to other inflammatory conditions and may contribute to new hypotheses on disease mechanisms.
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Affiliation(s)
- A Fischer
- Institute of Clinical Molecular Biology, Christian-Albrechts University, Schittenhelmstraße 12, Kiel, Germany
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48
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Hertlein H, Mittlmeier T, Piltz S, Schürmann M, Kauschke T, Lob G. Spinal stabilization for patients with metastatic lesions of the spine using a titanium spacer. Eur Spine J 2010; 1:131-6. [PMID: 20054960 DOI: 10.1007/bf00300940] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Anterior decompression in spinal metastases of the corporal type with impending (n = 5) or present (n = 36) neurological complications was performed in 41 patients. For reconstruction, a titanium cylinder was inserted after spondylectomy and augmented with an anterior plate. The titanium implant can easily be adjusted to the length needed without necessitating expensive additional equipment. Outside the patient the implant is filled with polymethylmetacrylate, facilitating plate transfixation for rotational locking. There was a 30-day mortality of 9.7%. Pain relief was apparent in 38 of 41 patients (92.7%), and motor improvement was manifest in 31 of 35 cases (88.6%). Six patients did not present with any neurological symptoms pre- or postoperatively. Neurological deterioration was registered in only 1 case (2.4%). Surgical efficacy was maintained until the death of the patients. Though tumor recurrence at a different spinal level led to consecutive surgery in 5 patients, no implant dislocation occurred during the observation period (maximum 44 months), characterizing the procedure as a mechanically reliable and safe technique.
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Affiliation(s)
- H Hertlein
- Unfallchirurgie, Chirurgische Klinik und Poliklinik der Universität München, Klinikum Grosshadern, München, Federal Republic of Germany
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49
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Hettwer S, Schürmann M, Wilhelm J, Ebelt H, Werdan K. Both systolic and diastolic functions are impaired in critically ill patients with community-acquired sepsis. Crit Care 2010. [PMCID: PMC2933980 DOI: 10.1186/cc8628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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50
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Wilhelm J, Hettwer S, Hammer D, Schürmann M, Amoury M, Ebelt H, Werdan K. Scoring patients with a suspected infection in the emergency department (ED): comparison of the ED-specific MEDS score with APACHE II and SOFA score. Crit Care 2010. [PMCID: PMC2934495 DOI: 10.1186/cc8483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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