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Mai S, Izumi K, Mai Y, Natsuga K, Ishii N, Sawamura D, Schauer F, Kiritsi D, Nishie W, Ujiie H. Native autoantigen complex detects pemphigoid autoantibodies. JID Innovations 2023; 3:100193. [PMID: 36992950 PMCID: PMC10041560 DOI: 10.1016/j.xjidi.2023.100193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 02/22/2023] Open
Abstract
Pemphigoid diseases are a group of autoimmune disorders characterized by subepidermal blistering in the skin and mucosa. Among them, mucous membrane pemphigoid (MMP) autoantibodies are characterized by targeting multiple molecules in the hemidesmosomes, including collagen XVII, laminin-332, and integrin a6/β4. Traditionally, recombinant proteins of the autoantigens have been employed to identify circulating autoantibodies by immune assays. However, developing an efficient detection system for MMP autoantibodies has been challenging because the autoantibodies have heterogeneous profiles and the antibody titers are typically low. In this study, we introduce an ELISA that takes advantage of a native autoantigen complex rather than simple recombinant proteins. We generated HaCaT keratinocytes with a DDDDK-tag knocked in at the COL17A1 locus by CRISPR/Cas9-mediated gene editing. Immunoprecipitation using the DDDDK-tag isolated a native complex that contained full-length and processed collagen XVII and integrin α6/β4. Then, we used the complex proteins to prepare an ELISA system and enrolled 55 MMP cases to validate its diagnostic performance. The sensitivity and specificity of the ELISA for detecting MMP autoantibodies were 70.9% and 86.7%, respectively, far superior to those of conventional assays. In autoimmune diseases such as MMP, in which autoantibodies target various molecules, isolating the antigen-protein complexes can help establish a diagnostic system.
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Boscary J, Schauer F, Ghidersa BE, Krüßmann R, Lux M, Czerwinski M, Wang Z, Li C, Mendelevitch B, Ehrke G. Thermal loading test of a Wendelstein 7-X pumping gap panel. Fusion Engineering and Design 2022. [DOI: 10.1016/j.fusengdes.2021.112986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Schauer F, Mai S, Hofmann S, Mai Y, Izumi K, Kern J, Nishie W, Kiritsi D. LB710 Detection of novel BP180 epitopes in Pemphigoid Gestationis. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.07.080] [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: 10/20/2022]
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Zühlke MK, Schlüter R, Mikolasch A, Henning AK, Giersberg M, Lalk M, Kunze G, Schweder T, Urich T, Schauer F. Correction to: Biotransformation of bisphenol a analogues by the biphenyl-degrading bacterium Cupriavidus basilensis - a structure-biotransformation relationship. Appl Microbiol Biotechnol 2021; 105:6117. [PMID: 34268582 PMCID: PMC8390411 DOI: 10.1007/s00253-021-11421-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
A Correction to this paper has been published: 10.1007/s00253-021-11421-9
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Affiliation(s)
- Marie-Katherin Zühlke
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany.,Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489, Greifswald, Germany.,Institute of Marine Biotechnology, Walter-Rathenau-Straße 49a, 17489, Greifswald, Germany
| | - Rabea Schlüter
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany.
| | - Annett Mikolasch
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Ann-Kristin Henning
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Martin Giersberg
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstraße 3, OT Gatersleben, 06466, Seeland, Germany
| | - Michael Lalk
- Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Straße 4, 17489, Greifswald, Germany
| | - Gotthard Kunze
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstraße 3, OT Gatersleben, 06466, Seeland, Germany
| | - Thomas Schweder
- Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489, Greifswald, Germany.,Institute of Marine Biotechnology, Walter-Rathenau-Straße 49a, 17489, Greifswald, Germany
| | - Tim Urich
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Frieder Schauer
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
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Mikolasch A, Berzhanova R, Omirbekova A, Reinhard A, Zühlke D, Meister M, Mukasheva T, Riedel K, Urich T, Schauer F. Moniliella spathulata, an oil-degrading yeast, which promotes growth of barley in oil-polluted soil. Appl Microbiol Biotechnol 2021; 105:401-415. [PMID: 33219393 PMCID: PMC7778628 DOI: 10.1007/s00253-020-11011-1] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 11/05/2020] [Accepted: 11/09/2020] [Indexed: 11/26/2022]
Abstract
The yeast strain Moniliella spathulata SBUG-Y 2180 was isolated from oil-contaminated soil at the Tengiz oil field in the Atyrau region of Kazakhstan on the basis of its unique ability to use crude oil and its components as the sole carbon and energy source. This yeast used a large number of hydrocarbons as substrates (more than 150), including n-alkanes with chain lengths ranging from C10 to C32, monomethyl- and monoethyl-substituted alkanes (C9-C23), and n-alkylcyclo alkanes with alkyl chain lengths from 3 to 24 carbon atoms as well as substituted monoaromatic and diaromatic hydrocarbons. Metabolism of this huge range of hydrocarbon substrates produced a very large number of aliphatic, alicyclic, and aromatic acids. Fifty-one of these were identified by GC/MS analyses. This is the first report of the degradation and formation of such a large number of compounds by a yeast. Inoculation of barley seeds with M. spathulata SBUG-Y 2180 had a positive effect on shoot and root development of plants grown in oil-contaminated sand, pointing toward potential applications of the yeast in bioremediation of polluted soils. KEY POINTS: • Moniliella spathulata an oil-degrading yeast • Increase of the growth of barley.
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Affiliation(s)
- Annett Mikolasch
- Institute of Microbiology, University Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany.
| | - Ramza Berzhanova
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi Ave 71, Almaty, Kazakhstan, 050040
| | - Anel Omirbekova
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi Ave 71, Almaty, Kazakhstan, 050040
| | - Anne Reinhard
- Institute of Microbiology, University Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Daniele Zühlke
- Institute of Microbiology, University Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Mareike Meister
- Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
| | - Togzhan Mukasheva
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi Ave 71, Almaty, Kazakhstan, 050040
| | - Katharina Riedel
- Institute of Microbiology, University Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Tim Urich
- Institute of Microbiology, University Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Frieder Schauer
- Institute of Microbiology, University Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
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Hahn V, Mikolasch A, Weitemeyer J, Petters S, Davids T, Lalk M, Lackmann JW, Schauer F. Ring-Closure Mechanisms Mediated by Laccase to Synthesize Phenothiazines, Phenoxazines, and Phenazines. ACS Omega 2020; 5:14324-14339. [PMID: 32596570 PMCID: PMC7315418 DOI: 10.1021/acsomega.0c00719] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/24/2020] [Indexed: 05/31/2023]
Abstract
The green and environmentally friendly synthesis of highly valuable organic substances is one possibility for the utilization of laccases (EC 1.10.3.2). As reactants for the herein described syntheses, different o-substituted arylamines or arylthiols and 2,5-dihydroxybenzoic acid and its derivatives were used. In this way, the formation of phenothiazines, phenoxazines, and phenazines was achieved in aqueous solution mediated by the laccase of Pycnoporus cinnabarinus in the presence of oxygen. Two types of phenothiazines (3-hydroxy- and 3-oxo-phenothiazines) formed in one reaction assay were described for the first time. The cyclization reactions yielded C-N, C-S, or C-O bonds. The syntheses were investigated with regard to the substitution pattern of the reaction partners. Differences in C-S and C-N bond formations without cyclization are discussed.
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Affiliation(s)
- Veronika Hahn
- Institut
für Mikrobiologie, Universität
Greifswald, Friedrich-Ludwig-Jahn Str. 15, 17487 Greifswald, Germany
- Leibniz-Institut
für Plasmaforschung und Technologie e.V. (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany
| | - Annett Mikolasch
- Institut
für Mikrobiologie, Universität
Greifswald, Friedrich-Ludwig-Jahn Str. 15, 17487 Greifswald, Germany
| | - Josephine Weitemeyer
- Institut
für Mikrobiologie, Universität
Greifswald, Friedrich-Ludwig-Jahn Str. 15, 17487 Greifswald, Germany
| | - Sebastian Petters
- Institut
für Mikrobiologie, Universität
Greifswald, Friedrich-Ludwig-Jahn Str. 15, 17487 Greifswald, Germany
| | - Timo Davids
- Institut
für Mikrobiologie, Universität
Greifswald, Friedrich-Ludwig-Jahn Str. 15, 17487 Greifswald, Germany
| | - Michael Lalk
- Institut
für Biochemie, Universität
Greifswald, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany
| | - Jan-Wilm Lackmann
- Leibniz-Institut
für Plasmaforschung und Technologie e.V. (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany
| | - Frieder Schauer
- Institut
für Mikrobiologie, Universität
Greifswald, Friedrich-Ludwig-Jahn Str. 15, 17487 Greifswald, Germany
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Reimer A, Hess M, Schwieger‐Brie A, Kiritsi D, Schauer F, Schumann H, Bruckner‐Tuderman L, Has C. A study into growth and anaemia in children with epidermolysis bullosa. Br J Dermatol 2020. [DOI: 10.1111/bjd.19068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Reimer A, Hess M, Schwieger‐Brie A, Kiritsi D, Schauer F, Schumann H, Bruckner‐Tuderman L, Has C. 大疱性表皮松解症患儿生长发育及贫血的研究. Br J Dermatol 2020. [DOI: 10.1111/bjd.19080] [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: 11/27/2022]
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Zühlke MK, Schlüter R, Mikolasch A, Henning AK, Giersberg M, Lalk M, Kunze G, Schweder T, Urich T, Schauer F. Biotransformation of bisphenol A analogues by the biphenyl-degrading bacterium Cupriavidusbasilensis - a structure-biotransformation relationship. Appl Microbiol Biotechnol 2020; 104:3569-3583. [PMID: 32125477 PMCID: PMC8282568 DOI: 10.1007/s00253-020-10406-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 11/22/2019] [Revised: 01/08/2020] [Accepted: 01/23/2020] [Indexed: 11/26/2022]
Abstract
Comparative analyses determined the relationship between the structure of bisphenol A (BPA) as well as of seven bisphenol analogues (bisphenol B (BPB), bisphenol C (BPC), bisphenol E (BPE), bisphenol F (BPF), bisphenol Z (BPZ), bisphenol AP (BPAP), bisphenol PH (BPPH)) and their biotransformability by the biphenyl-degrading bacterium Cupriavidus basilensis SBUG 290. All bisphenols were substrates for bacterial transformation with conversion rates ranging from 6 to 98% within 216 h and 36 different metabolites were characterized. Transformation by biphenyl-grown cells comprised four different pathways: (a) formation of ortho-hydroxylated bisphenols, hydroxylating either one or both phenols of the compounds; (b) ring fission; (c) transamination followed by acetylation or dimerization; and (d) oxidation of ring substituents, such as methyl groups and aromatic ring systems, present on the 3-position. However, the microbial attack of bisphenols by C. basilensis was limited to the phenol rings and its substituents, while substituents on the carbon bridge connecting the rings were not oxidized. All bisphenol analogues with modifications at the carbon bridge could be oxidized up to ring cleavage, while substituents at the 3-position of the phenol ring other than hydroxyl groups did not allow this reaction. Replacing one methyl group at the carbon bridge of BPA by a hydrophobic aromatic or alicyclic ring system inhibited both dimerization and transamination followed by acetylation. While most of the bisphenol analogues exhibited estrogenic activity, four biotransformation products tested were not estrogenically active.
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Affiliation(s)
- Marie-Katherin Zühlke
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
- Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489, Greifswald, Germany
- Institute of Marine Biotechnology, Walter-Rathenau-Straße 49a, 17489, Greifswald, Germany
| | - Rabea Schlüter
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany.
| | - Annett Mikolasch
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Ann-Kristin Henning
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Martin Giersberg
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstraße 3, OT Gatersleben, 06466, Seeland, Germany
| | - Michael Lalk
- Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Straße 4, 17489, Greifswald, Germany
| | - Gotthard Kunze
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstraße 3, OT Gatersleben, 06466, Seeland, Germany
| | - Thomas Schweder
- Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489, Greifswald, Germany
- Institute of Marine Biotechnology, Walter-Rathenau-Straße 49a, 17489, Greifswald, Germany
| | - Tim Urich
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Frieder Schauer
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
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Reimer A, Hess M, Schwieger-Briel A, Kiritsi D, Schauer F, Schumann H, Bruckner-Tuderman L, Has C. Natural history of growth and anaemia in children with epidermolysis bullosa: a retrospective cohort study. Br J Dermatol 2019; 182:1437-1448. [PMID: 31487386 DOI: 10.1111/bjd.18475] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND Impaired growth and anaemia are major extracutaneous complications of epidermolysis bullosa (EB), but data on their development are lacking. OBJECTIVES To determine the clinical course of growth and anaemia in children with EB and clarify the impact of nutritional compromise, inflammation and genetic factors. METHODS A retrospective study was conducted of 200 children, 157 with recessive dystrophic EB (RDEB) and 43 with junctional EB (JEB)-generalized intermediate, followed at the main referral centre in Germany. Growth charts were calculated using the modified LMS method and were correlated with parameters of anaemia, nutrition, inflammation and the molecular defect in a linear model. RESULTS In our cohort of patients with RDEB, weight impairment started at 12-18 months old; by the age of 10 years, 50% showed wasting. The predicted median weight at age 20 years was 35·2 kg for men and 40·1 kg for women. In JEB, growth resembled that of healthy children. Anaemia was present from the second year of life onwards in RDEB and JEB. Low levels of haemoglobin, iron, vitamin D, zinc and albumin, high levels of C-reactive protein, and absence of collagen VII correlated significantly with low weight in RDEB. No correlation was observed in JEB. CONCLUSIONS The results highlight that nutritional compromise occurs early in children with RDEB and therefore may require interventions as of the first year or two of life. What's already known about this topic? Children with epidermolysis bullosa (EB) suffer from failure to thrive and anaemia as major extracutaneous complications. The course of growth and the development of anaemia in EB are poorly characterized. What does this study add? A molecularly well characterized cohort of 200 children with EB was followed with regard to anthropometrics, anaemia and inflammation. We demonstrate early onset of growth failure and anaemia, most pronounced in the subset of recessive dystrophic EB. Awareness of early growth delay and nutritional deficiencies will improve EB care in daily practice.
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Affiliation(s)
- A Reimer
- Department of Dermatology, University Clinic for Dermatology and Venereology, Faculty of Medicine, University of Freiburg, Hauptstraβe 7, 79104, Freiburg, Germany
| | - M Hess
- Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - A Schwieger-Briel
- Department of Dermatology, University Clinic for Dermatology and Venereology, Faculty of Medicine, University of Freiburg, Hauptstraβe 7, 79104, Freiburg, Germany.,University Children's Hospital Zurich, Zurich, Switzerland
| | - D Kiritsi
- Department of Dermatology, University Clinic for Dermatology and Venereology, Faculty of Medicine, University of Freiburg, Hauptstraβe 7, 79104, Freiburg, Germany
| | - F Schauer
- Department of Dermatology, University Clinic for Dermatology and Venereology, Faculty of Medicine, University of Freiburg, Hauptstraβe 7, 79104, Freiburg, Germany
| | - H Schumann
- Department of Dermatology, University Clinic for Dermatology and Venereology, Faculty of Medicine, University of Freiburg, Hauptstraβe 7, 79104, Freiburg, Germany
| | - L Bruckner-Tuderman
- Department of Dermatology, University Clinic for Dermatology and Venereology, Faculty of Medicine, University of Freiburg, Hauptstraβe 7, 79104, Freiburg, Germany
| | - C Has
- Department of Dermatology, University Clinic for Dermatology and Venereology, Faculty of Medicine, University of Freiburg, Hauptstraβe 7, 79104, Freiburg, Germany
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Schauer F, Kern JS, Virtic O, Technau-Hafsi K, Meiss F, Thoma K, Athanasiou I, Sitaru C, Di Zenzo G, Izumi K, Nishie W, Shimizu H, Bruckner-Tuderman L, Kiritsi D. A new clinical variant of acquired reactive perforating dermatosis-like bullous pemphigoid. Br J Dermatol 2019; 180:231-232. [PMID: 30188568 DOI: 10.1111/bjd.17146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- F Schauer
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 7, 79104, Freiburg, Germany
| | - J S Kern
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 7, 79104, Freiburg, Germany
- Royal Melbourne Hospital, Parkville and Box Hill Hospital - Monash University Eastern Health Clinical School, Box Hill, Victoria, Australia
| | - O Virtic
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 7, 79104, Freiburg, Germany
| | - K Technau-Hafsi
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 7, 79104, Freiburg, Germany
| | - F Meiss
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 7, 79104, Freiburg, Germany
| | - K Thoma
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 7, 79104, Freiburg, Germany
| | - I Athanasiou
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 7, 79104, Freiburg, Germany
| | - C Sitaru
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 7, 79104, Freiburg, Germany
| | - G Di Zenzo
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata (IDI)-IRCCS, FLMM, Rome, Italy
| | - K Izumi
- Department of Dermatology, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - W Nishie
- Department of Dermatology, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - H Shimizu
- Department of Dermatology, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - L Bruckner-Tuderman
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 7, 79104, Freiburg, Germany
| | - D Kiritsi
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hauptstraße 7, 79104, Freiburg, Germany
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12
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Reimer A, Schwieger-Briel A, He Y, Leppert J, Schauer F, Kiritsi D, Schneider H, Ott H, Bruckner-Tuderman L, Has C. Natural history and clinical outcome of junctional epidermolysis bullosa generalized intermediate due to a LAMA3 mutation. Br J Dermatol 2018; 178:973-975. [PMID: 29077994 DOI: 10.1111/bjd.16088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- A Reimer
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, Hauptstraße 7, 79104, Freiburg, Germany
- Berta-Ottenstein-Programme, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - A Schwieger-Briel
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, Hauptstraße 7, 79104, Freiburg, Germany
- Children's Hospital Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
| | - Y He
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, Hauptstraße 7, 79104, Freiburg, Germany
| | - J Leppert
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, Hauptstraße 7, 79104, Freiburg, Germany
| | - F Schauer
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, Hauptstraße 7, 79104, Freiburg, Germany
| | - D Kiritsi
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, Hauptstraße 7, 79104, Freiburg, Germany
| | - H Schneider
- Department of Pediatrics, University of Erlangen-Nürnberg, Loschgestraße 15, 91054, Erlangen, Germany
| | - H Ott
- Department of Pediatric Dermatology, Children's Hospital Auf Der Bult, Janusz-Korczak-Allee 12, 30173, Hannover, Germany
| | - L Bruckner-Tuderman
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, Hauptstraße 7, 79104, Freiburg, Germany
| | - C Has
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, Hauptstraße 7, 79104, Freiburg, Germany
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13
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Hahn V, Meister M, Hussy S, Cordes A, Enderle G, Saningong A, Schauer F. Enhanced laccase-mediated transformation of diclofenac and flufenamic acid in the presence of bisphenol A and testing of an enzymatic membrane reactor. AMB Express 2018; 8:28. [PMID: 29478084 PMCID: PMC6890904 DOI: 10.1186/s13568-018-0546-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 01/27/2018] [Indexed: 01/11/2023] Open
Abstract
The inadequate removal of pharmaceuticals and other micropollutants in municipal wastewater treatment plants, as evidenced by their detection of these substances in the aquatic environment has led to the need for sustainable remediation strategies. Laccases possess a number of advantages including a broad substrate spectrum. To identify promoting or inhibitory effects of reaction partners in the remediation processes we tested not only single compounds—as has been described in most studies—but also mixtures of pollutants. The reaction of diclofenac (DCF) and flufenamic acid (FA), mediated by Trametes versicolor laccase resulted in the formation of products, which were more hydrophilic than the respective reactant (reactant concentration of 0.1 mM; laccase activity 0.5 U/ml). Analyses (HPLC, LC/MS) showed that the product 1a and 1b for DCF and FA, respectively, to be a para-benzoquinone imine derivative. The formation of 1a was enhanced by the addition of bisphenol A (BPA). After 6 days 97% more product was formed in the mixture of DCF and BPA compared with DCF tested alone. Product 1a was also detected in experiments with micropollutant-supplemented secondary effluent. Within 24 h 67% and 100% of DCF and BPA were transformed, respectively (25 U/ml). Experiments with a membrane reactor (volume 10 l; phosphate buffer, pH 7) were in good agreement with the results of the laboratory scale experiments (50 ml). EC50-values were also determined. The data support the use of laccases for the removal or detoxification of recalcitrant pollutants. Thus, the enzyme laccase may be a component of an additional environmentally friendly process for the treatment stage of wastewater remediation.
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Schauer F, Hoffmann J, Fischer J, Has C. Oral manifestations as the main feature of late-onset recessive dystrophic epidermolysis bullosa. J Eur Acad Dermatol Venereol 2017; 32:e161-e163. [PMID: 29080321 DOI: 10.1111/jdv.14663] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- F Schauer
- Faculty of Medicine, Department of Dermatology, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany
| | - J Hoffmann
- Faculty of Medicine, Department of Dermatology, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany
| | - J Fischer
- Faculty of Medicine, Department of Human Genetics, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany
| | - C Has
- Faculty of Medicine, Department of Dermatology, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany
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Meier AK, Worch S, Böer E, Hartmann A, Mascher M, Marzec M, Scholz U, Riechen J, Baronian K, Schauer F, Bode R, Kunze G. Agdc1p - a Gallic Acid Decarboxylase Involved in the Degradation of Tannic Acid in the Yeast Blastobotrys (Arxula) adeninivorans. Front Microbiol 2017; 8:1777. [PMID: 28966611 PMCID: PMC5605622 DOI: 10.3389/fmicb.2017.01777] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 05/22/2017] [Accepted: 08/31/2017] [Indexed: 11/23/2022] Open
Abstract
Tannins and hydroxylated aromatic acids, such as gallic acid (3,4,5-trihydroxybenzoic acid), are plant secondary metabolites which protect plants against herbivores and plant-associated microorganisms. Some microbes, such as the yeast Arxula adeninivorans are resistant to these antimicrobial substances and are able to use tannins and gallic acid as carbon sources. In this study, the Arxula gallic acid decarboxylase (Agdc1p) which degrades gallic acid to pyrogallol was characterized and its function in tannin catabolism analyzed. The enzyme has a higher affinity for gallic acid (Km -0.7 ± 0.2 mM, kcat -42.0 ± 8.2 s-1) than to protocatechuic acid (3,4-dihydroxybenzoic acid) (Km -3.2 ± 0.2 mM, kcat -44.0 ± 3.2 s-1). Other hydroxylated aromatic acids, such as 3-hydroxybenzoic acid, 4-hydroxybenzoic acid, 2,3-dihydroxybenzoic acid, 2,4-dihydroxybenzoic acid and 2,5-dihydroxybenzoic acid are not gallic acid decarboxylase substrates. A. adeninivorans G1212/YRC102-AYNI1-AGDC1, which expresses the AGDC1 gene under the control of the strong nitrate inducible AYNI1 promoter achieved a maximum gallic acid decarboxylase activity of 1064.4 U/l and 97.5 U/g of dry cell weight in yeast grown in minimal medium with nitrate as nitrogen source and glucose as carbon source. In the same medium, gallic acid decarboxylase activity was not detected for the control strain G1212/YRC102 with AGDC1 expression under the control of the endogenous promoter. Gene expression analysis showed that AGDC1 is induced by gallic acid and protocatechuic acid. In contrast to G1212/YRC102-AYNI1-AGDC1 and G1212/YRC102, A. adeninivorans G1234 [Δagdc1] is not able to grow on medium with gallic acid as carbon source but can grow in presence of protocatechuic acid. This confirms that Agdc1p plays an essential role in the tannic acid catabolism and could be useful in the production of catechol and cis,cis-muconic acid. However, the protocatechuic acid catabolism via Agdc1p to catechol seems to be not the only degradation pathway.
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Affiliation(s)
- Anna K. Meier
- Leibniz Institute of Plant Genetics and Crop Plant ResearchGatersleben, Germany
| | - Sebastian Worch
- Leibniz Institute of Plant Genetics and Crop Plant ResearchGatersleben, Germany
| | - Erik Böer
- Leibniz Institute of Plant Genetics and Crop Plant ResearchGatersleben, Germany
| | - Anja Hartmann
- Leibniz Institute of Plant Genetics and Crop Plant ResearchGatersleben, Germany
| | - Martin Mascher
- Leibniz Institute of Plant Genetics and Crop Plant ResearchGatersleben, Germany
| | - Marek Marzec
- Leibniz Institute of Plant Genetics and Crop Plant ResearchGatersleben, Germany
- Department of Genetics, Faculty of Biology and Environmental Protection, University of SilesiaKatowice, Poland
| | - Uwe Scholz
- Leibniz Institute of Plant Genetics and Crop Plant ResearchGatersleben, Germany
| | - Jan Riechen
- Leibniz Institute of Plant Genetics and Crop Plant ResearchGatersleben, Germany
| | - Kim Baronian
- Department of Microbiology, School of Biological Sciences, University of CanterburyChristchurch, New Zealand
| | - Frieder Schauer
- Institute of Microbiology, University of GreifswaldGreifswald, Germany
| | - Rüdiger Bode
- Institute of Microbiology, University of GreifswaldGreifswald, Germany
| | - Gotthard Kunze
- Leibniz Institute of Plant Genetics and Crop Plant ResearchGatersleben, Germany
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Bykov* V, Egorov K, Fellinger J, Kallmeyer JP, Schauer F, Gasparotto M. Wendelstein 7-X Mechanical Instrumentation System for Commissioning and Operation. Fusion Science and Technology 2017. [DOI: 10.13182/fst14-974] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- V. Bykov*
- Max-Planck-Institut für Plasmaphysik, 17491 Greifswald, Germany
| | - K. Egorov
- ITER Organization, Route de Vinon sur Verdon, 13115 St. Paul lez Durance, France
| | - J. Fellinger
- Max-Planck-Institut für Plasmaphysik, 17491 Greifswald, Germany
| | - J. P. Kallmeyer
- Max-Planck-Institut für Plasmaphysik, 17491 Greifswald, Germany
| | - F. Schauer
- Max-Planck-Institut für Plasmaphysik, 17491 Greifswald, Germany
| | - M. Gasparotto
- Max-Planck-Institut für Plasmaphysik, 17491 Greifswald, Germany
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Lindequist U, Schauer F. In Memoriam: Prof. Dr. Hanns Kreisel (1931-2017). Int J Med Mushrooms 2017. [DOI: 10.1615/intjmedmushrooms.v19.i3.100] [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: 11/13/2022]
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Warr LN, Friese A, Schwarz F, Schauer F, Portier RJ, Basirico LM, Olson GM. Experimental study of clay-hydrocarbon interactions relevant to the biodegradation of the Deepwater Horizon oil from the Gulf of Mexico. Chemosphere 2016; 162:208-221. [PMID: 27497351 DOI: 10.1016/j.chemosphere.2016.07.076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 03/08/2016] [Revised: 07/15/2016] [Accepted: 07/24/2016] [Indexed: 06/06/2023]
Abstract
Adding clay to marine oil pollution represents a promising approach to enhance bacterial hydrocarbon degradation in nutrient poor waters. In this study, three types of regionally available clays (Ca-bentonite, Fuller's Earth and kaolin) were tested to stimulate the biodegradation of source and weathered oil collected from the Deepwater Horizon spill. The weathered oil showed little biodegradation prior to experimentation and was extensively degraded by bacteria in the laboratory in a similar way as the alkane-rich source oil. For both oils, the addition of natural clay-flakes showed minor enhancement of oil biodegradation compared to the non-clay bearing control, but the clay-oil films did limit evaporation. Only alkanes of a molecular weight (MW) > 420 showed significant reduction by enhanced biodegradation following natural clay treatment. In contrast, all fertilized clay flakes showed major bacterial degradation of the oil, with a 6-10 times reduction in alkane content, and an up to 8 fold increase in the rate of O2 consumption. Compared to the control, such treatment showed particular reduction of longer chained alkanes (MW > 226). The application of natural and fertilized clay flakes also showed selective reduction of PAHs, mainly in the MW range of 200-300, but without significant change in the toxicity indices measured. These results imply that a large variety of clays may be used to boost oil biodegradation by aiding attachment of fertilizing nutrients to the oil.
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Affiliation(s)
- Laurence N Warr
- Institute of Geography and Geology, Ernst-Moritz-Arndt University, F.L. Jahn Strasse 17A, D-17487 Greifswald, Germany.
| | - André Friese
- GFZ German Research Centre for Geosciences, Telegrafenberg, D-14473 Potsdam, Germany
| | - Florian Schwarz
- Department of Geography, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, United Kingdom
| | - Frieder Schauer
- Institute of Microbiology, Ernst-Moritz-Arndt University, F.L. Jahn Strasse 15, D-17487 Greifswald, Germany
| | - Ralph J Portier
- College of the Coast & Environment Louisiana State University, 1165 EC&E Bldg, Baton Rouge, LA 70803, USA
| | - Laura M Basirico
- College of the Coast & Environment Louisiana State University, 1165 EC&E Bldg, Baton Rouge, LA 70803, USA
| | - Gregory M Olson
- College of the Coast & Environment Louisiana State University, 1165 EC&E Bldg, Baton Rouge, LA 70803, USA
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Rauter M, Kasprzak J, Becker K, Riechen J, Worch S, Hartmann A, Mascher M, Scholz U, Baronian K, Bode R, Schauer F, Matthias Vorbrodt H, Kunze G. Aadh2p: an Arxula adeninivorans alcohol dehydrogenase involved in the first step of the 1-butanol degradation pathway. Microb Cell Fact 2016; 15:175. [PMID: 27733155 PMCID: PMC5062937 DOI: 10.1186/s12934-016-0573-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 09/28/2016] [Indexed: 11/24/2022] Open
Abstract
Background The non-conventional yeast Arxula adeninivorans uses 1-butanol as a carbon source and has recently attracted attention as a promising organism for 1-butanol production. Alcohol dehydrogenases (adhp) are important catalysts in 1-butanol metabolism, but only Aadh1p from Arxula has been characterized. This enzyme is involved in ethanol synthesis but has a low impact on 1-butanol degradation. Results In this study, we identified and characterized a second adhp from A. adeninivorans (Aadh2p). Compared to Saccharomyces cerevisiae ADHs’ (ScAdh) protein sequences it originates from the same ancestral node as ScAdh6p, 7p and 4p. It is also localized in the cytoplasm and uses NAD(H) as cofactor. The enzyme has its highest activity with medium chain-length alcohols and maximum activity with 1-butanol with the catalytic efficiency of the purified enzyme being 42 and 43,000 times higher than with ethanol and acetaldehyde, respectively. Arxula adeninivorans strain G1212/YRC102-AADH2, which expresses the AADH2 gene under the control of the strong constitutive TEF1 promoter was constructed. It achieved an ADH activity of up to 8000 U/L and 500 U/g dry cell weight (dcw) which is in contrast to the control strain G1212/YRC102 which had an ADH activity of up to 1400 U/L and 200 U/g dcw. Gene expression analysis showed that AADH2 derepression or induction using non-fermentable carbon-sources such as ethanol, pyruvate, glycerol or 1-butanol did occur. Compared to G1212/YRC102 AADH2 knock-out strain had a slower growth rate and lower 1-butanol consumption if 1-butanol was used as sole carbon source and AADH2-transformants did not grow at all in the same conditions. However, addition of the branched-chain amino acids leucine, isoleucine and valine allowed the transformants to use 1-butanol as carbon source. The addition of these amino acids to the control strain and Δaadh2 mutant cultures had the effect of accelerating 1-butanol consumption. Conclusions Our results confirm that Aadh2p plays a major role in A. adeninivorans 1-butanol metabolism. It is upregulated by up to 60-fold when the cells grow on 1-butanol, whereas only minor changes were found in the relative expression level for Aadh1p. Thus the constitutive overexpression of the AADH2 gene could be useful in the production of 1-butanol by A. adeninivorans, although it is likely that other ADHs will have to be knocked-out to prevent 1-butanol oxidation. Electronic supplementary material The online version of this article (doi:10.1186/s12934-016-0573-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Marion Rauter
- Orgentis Chemicals GmbH, Bahnhofstr. 3-5, 06466, Gatersleben, Germany
| | - Jakub Kasprzak
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, 06466, Gatersleben, Saxony-Anhalt, Germany
| | - Karin Becker
- Orgentis Chemicals GmbH, Bahnhofstr. 3-5, 06466, Gatersleben, Germany
| | - Jan Riechen
- Jäckering Mühlen-und Nährmittelwerke GmbH, Vorsterhauser Weg 46, 59007, Hamm, Germany
| | - Sebastian Worch
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, 06466, Gatersleben, Saxony-Anhalt, Germany
| | - Anja Hartmann
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, 06466, Gatersleben, Saxony-Anhalt, Germany
| | - Martin Mascher
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, 06466, Gatersleben, Saxony-Anhalt, Germany
| | - Uwe Scholz
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, 06466, Gatersleben, Saxony-Anhalt, Germany
| | - Kim Baronian
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - Rüdiger Bode
- Institute of Microbiology, University of Greifswald, Jahnstr. 15, 17487, Greifswald, Germany
| | - Frieder Schauer
- Institute of Microbiology, University of Greifswald, Jahnstr. 15, 17487, Greifswald, Germany
| | | | - Gotthard Kunze
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, 06466, Gatersleben, Saxony-Anhalt, Germany.
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Mikolasch A, Reinhard A, Alimbetova A, Omirbekova A, Pasler L, Schumann P, Kabisch J, Mukasheva T, Schauer F. From oil spills to barley growth - oil-degrading soil bacteria and their promoting effects. J Basic Microbiol 2016; 56:1252-1273. [PMID: 27624187 DOI: 10.1002/jobm.201600300] [Citation(s) in RCA: 8] [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: 05/11/2016] [Accepted: 08/06/2016] [Indexed: 12/30/2022]
Abstract
Heavy contamination of soils by crude oil is omnipresent in areas of oil recovery and exploitation. Bioremediation by indigenous plants in cooperation with hydrocarbon degrading microorganisms is an economically and ecologically feasible means to reclaim contaminated soils. To study the effects of indigenous soil bacteria capable of utilizing oil hydrocarbons on biomass production of plants growing in oil-contaminated soils eight bacterial strains were isolated from contaminated soils in Kazakhstan and characterized for their abilities to degrade oil components. Four of them, identified as species of Gordonia and Rhodococcus turned out to be effective degraders. They produced a variety of organic acids from oil components, of which 59 were identified and 7 of them are hitherto unknown acidic oil metabolites. One of them, Rhodococcus erythropolis SBUG 2054, utilized more than 140 oil components. Inoculating barley seeds together with different combinations of these bacterial strains restored normal growth of the plants on contaminated soils, demonstrating the power of this approach for bioremediation. Furthermore, we suggest that the plant promoting effect of these bacteria is not only due to the elimination of toxic oil hydrocarbons but possibly also to the accumulation of a variety of organic acids which modulate the barley's rhizosphere environment.
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Affiliation(s)
- Annett Mikolasch
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Greifswald, Germany
| | - Anne Reinhard
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Greifswald, Germany
| | - Anna Alimbetova
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Anel Omirbekova
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Lisa Pasler
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Greifswald, Germany
| | - Peter Schumann
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Johannes Kabisch
- Institute of Biochemistry, University Greifswald, 17487, Greifswald, Germany
| | - Togzhan Mukasheva
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Frieder Schauer
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Greifswald, Germany
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Schauer F, Tkáčová M, Nadáždy V, Gmucová K, Ožvoldová M, Tkáč L, Chlpík J. Electronic structure of UV degradation defects in polysilanes studied by Energy Resolved – Electrochemical Impedance Spectroscopy. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.02.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hofmann K, Kreisel H, Kordon K, Preuss F, Kües U, Schauer F. The key role of lignin decomposing fungi in the decay of roofs thatched with water reed. Mycol Prog 2016. [DOI: 10.1007/s11557-016-1181-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kasprzak J, Rauter M, Riechen J, Worch S, Baronian K, Bode R, Schauer F, Kunze G. Characterization of an Arxula adeninivorans alcohol dehydrogenase involved in the metabolism of ethanol and 1-butanol. FEMS Yeast Res 2016; 16:fow018. [PMID: 26912215 DOI: 10.1093/femsyr/fow018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2016] [Indexed: 01/25/2023] Open
Abstract
In this study, alcohol dehydrogenase 1 from Arxula adeninivorans (Aadh1p) was identified and characterized. Aadh1p showed activity with short and medium chain length primary alcohols in the forward reaction and their aldehydes in the reverse reaction. Aadh1p has 64% identity with Saccharomyces cerevisiae Adh1p, is localized in the cytoplasm and uses NAD(+) as cofactor. Gene expression analysis showed a low level increase in AADH1 gene expression with ethanol, pyruvate or xylose as the carbon source. Deletion of the AADH1 gene affects growth of the cells with 1-butanol, ethanol and glucose as the carbon source, and a strain which overexpressed the AADH1 gene metabolized 1-butanol more rapidly. An ADH activity assay indicated that Aadh1p is a major enzyme for the synthesis of ethanol and the degradation of 1-butanol in A. adeninivorans.
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Affiliation(s)
- Jakub Kasprzak
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Correnstr. 3, D-06466 Gatersleben, Germany
| | - Marion Rauter
- Orgentis Chemicals GmbH, Bahnhofstr. 3-5, D-06466 Gatersleben, Germany
| | - Jan Riechen
- Jäckering Mühlen- und Nährmittelwerke GmbH, Vorsterhauser Weg 46, D-59007 Hamm, Germany
| | - Sebastian Worch
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Correnstr. 3, D-06466 Gatersleben, Germany
| | - Kim Baronian
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - Rüdiger Bode
- Institute of Microbiology, University of Greifswald, Jahnstr. 15, D-17487 Greifswald, Germany
| | - Frieder Schauer
- Institute of Microbiology, University of Greifswald, Jahnstr. 15, D-17487 Greifswald, Germany
| | - Gotthard Kunze
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Correnstr. 3, D-06466 Gatersleben, Germany
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Warmer F, Beidler C, Dinklage A, Egorov K, Feng Y, Geiger J, Kemp R, Knight P, Schauer F, Turkin Y, Ward D, Wolf R, Xanthopoulos P. Implementation and verification of a HELIAS module for the systems code PROCESS. Fusion Engineering and Design 2015. [DOI: 10.1016/j.fusengdes.2014.12.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Brack C, Mikolasch A, Schlueter R, Otto A, Becher D, Wegner U, Albrecht D, Riedel K, Schauer F. Antibacterial metabolites and bacteriolytic enzymes produced by Bacillus pumilus during bacteriolysis of Arthrobacter citreus. Mar Biotechnol (NY) 2015; 17:290-304. [PMID: 25678259 DOI: 10.1007/s10126-015-9614-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 12/24/2014] [Indexed: 06/04/2023]
Abstract
The marine isolate Bacillus pumilus SBUG 1800 is able to lyse living cells of Arthrobacter citreus on solid media as well as pasteurized A. citreus cells in liquid mineral salt medium. The cultivation of B. pumilus in the presence of pasteurized A. citreus is accompanied by an enhanced production of 2,5-diketopiperazines (DKPs). DKPs inhibit bacterial growth, but do not seem to cause bacteriolysis. This study shows that B. pumilus also lyses living cells of A. citreus in co-culture experiments as an intraguild predator, even if the inoculum of B. pumilus is low. In order to characterize the bacteriolytic process, more precisely changes in the extracellular metabolome and proteome have been analyzed under different culture conditions. Besides the known DKPs, a number of different pumilacidins and bacteriolytic enzymes are produced. Two lipopeptides with [M + H](+) = 1008 and [M + H](+) = 1022 were detected and are proposed to be pumilacidin H and I. While the lipopeptides lyse living bacterial cells in lysis test assays, a set of extracellular enzymes degrades the dead cell material. Two of the cell wall hydrolases involved have been identified as N-acetylmuramoyl-L-alanine amidase and beta-N-acetylglucosaminidase. These findings together with electron microscopic and cell growth monitoring during co-culture experiments give a detailed view on the bacteriolytic process.
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Affiliation(s)
- Christiane Brack
- Institute of Microbiology, Ernst-Moritz-Arndt-University of Greifswald, Friedrich-Ludwig Jahn-Str. 15, 17487, Greifswald, Germany,
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Mikolasch A, Omirbekova A, Schumann P, Reinhard A, Sheikhany H, Berzhanova R, Mukasheva T, Schauer F. Enrichment of aliphatic, alicyclic and aromatic acids by oil-degrading bacteria isolated from the rhizosphere of plants growing in oil-contaminated soil from Kazakhstan. Appl Microbiol Biotechnol 2015; 99:4071-84. [PMID: 25592733 DOI: 10.1007/s00253-014-6320-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 12/09/2014] [Accepted: 12/12/2014] [Indexed: 10/24/2022]
Abstract
Three microbial strains were isolated from the rhizosphere of alfalfa (Medicago sativa), grass mixture (Festuca rubra, 75 %; Lolium perenne, 20 %; Poa pratensis, 10 %), and rape (Brassica napus) on the basis of their high capacity to use crude oil as the sole carbon and energy source. These isolates used an unusually wide spectrum of hydrocarbons as substrates (more than 80), including n-alkanes with chain lengths ranging from C12 to C32, monomethyl- and monoethyl-substituted alkanes (C12-C23), n-alkylcyclo alkanes with alkyl chain lengths from 4 to 18 carbon atoms, as well as substituted monoaromatic and diaromatic hydrocarbons. These three strains were identified as Gordonia rubripertincta and Rhodococcus sp. SBUG 1968. During their transformation of this wide range of hydrocarbon substrates, a very large number of aliphatic, alicyclic, and aromatic acids was detected, 44 of them were identified by GC/MS analyses, and 4 of them are described as metabolites for the first time. Inoculation of plant seeds with these highly potent bacteria had a beneficial effect on shoot and root development of plants which were grown on oil-contaminated sand.
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Affiliation(s)
- Annett Mikolasch
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Friedrich-Ludwig-Jahn-Str. 15, 17487, Greifswald, Germany,
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Schauer F, Poppert S, Technau-Hafsi K, Mockenhaupt M, Muntau B, Häcker G, Tappe D, Jakob T. Travel-acquired subcutaneous Sparganum proliferum infection diagnosed by molecular methods. Br J Dermatol 2014; 170:741-3. [PMID: 24124973 DOI: 10.1111/bjd.12679] [Citation(s) in RCA: 13] [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: 11/30/2022]
Affiliation(s)
- F Schauer
- Department of Dermatology, University Medical Center Freiburg, Hauptstrasse 7, D-79104, Freiburg, Germany
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Beier A, Hahn V, Bornscheuer UT, Schauer F. Metabolism of alkenes and ketones by Candida maltosa and related yeasts. AMB Express 2014; 4:75. [PMID: 25309846 PMCID: PMC4192553 DOI: 10.1186/s13568-014-0075-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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: 08/04/2014] [Accepted: 09/23/2014] [Indexed: 11/12/2022] Open
Abstract
Knowledge is scarce about the degradation of ketones in yeasts. For bacteria a subterminal degradation of alkanes to ketones and their further metabolization has been described which always involved Baeyer-Villiger monooxygenases (BVMOs). In addition, the question has to be clarified whether alkenes are converted to ketones, in particular for the oil degrading yeast Candida maltosa little is known. In this study we show the degradation of the aliphatic ketone dodecane-2-one by Candida maltosa and the related yeasts Candida tropicalis, Candida catenulata and Candida albicans as well as Trichosporon asahii and Yarrowia lipolytica. One pathway is initiated by the formation of decyl acetate, resulting from a Baeyer-Villiger-oxidation of this ketone. Beyond this, an initial reduction to dodecane-2-ol by a keto reductase was clearly shown. In addition, two different ways to metabolize dodec-1-ene were proposed. One involved the formation of dodecane-2-one and the other one a conversion leading to carboxylic and dicarboxylic acids. Furthermore the induction of ketone degrading enzymes by dodecane-2-one and dodec-1-ene was shown. Interestingly, with dodecane no subterminal degradation products were detected and it did not induce any enzymes to convert dodecane-2-one.
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Affiliation(s)
- Andy Beier
- Institute of Microbiology, Department of Applied Microbiology, Greifswald University, Friedrich-Ludwig-Jahn-Str. 15, Greifswald, 17487, Germany ; Institute of Biochemistry, Department of Biotechnology & Enzyme Catalysis, Greifswald University, Felix-Hausdorff-Str. 4, Greifswald, 17487, Germany
| | - Veronika Hahn
- Institute of Microbiology, Department of Applied Microbiology, Greifswald University, Friedrich-Ludwig-Jahn-Str. 15, Greifswald, 17487, Germany
| | - Uwe T Bornscheuer
- Institute of Biochemistry, Department of Biotechnology & Enzyme Catalysis, Greifswald University, Felix-Hausdorff-Str. 4, Greifswald, 17487, Germany
| | - Frieder Schauer
- Institute of Microbiology, Department of Applied Microbiology, Greifswald University, Friedrich-Ludwig-Jahn-Str. 15, Greifswald, 17487, Germany
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Brack C, Mikolasch A, Schauer F. 2,5-Diketopiperazines produced by Bacillus pumilus during bacteriolysis of Arthrobacter citreus. Mar Biotechnol (NY) 2014; 16:385-395. [PMID: 24449388 DOI: 10.1007/s10126-014-9559-y] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 10/10/2013] [Indexed: 05/28/2023]
Abstract
We report the detection by gas chromatography/mass spectrometry and liquid chromatography/mass spectrometry analyses of the secreted 2,5-diketopiperazines (DKPs) cyclo(-Ala-Pro), cyclo(-Gly-Pro), cyclo(-Val-Pro), cyclo(-Ile-Pro), cyclo(-Leu-Pro), cyclo(-Pro-Pro), cyclo(-HyP-Pro), cyclo(-Met-Pro), and cyclo(-Phe-Pro) produced by Bacillus pumilus. The study focuses on a marine isolate and a laboratory test strain of B. pumilus with capabilities to lyse pregrown living cell lawns of different bacterial species, among them Arthrobacter citreus. Chromatographic methods were used to analyze induced bioactive compounds. At least 13 different DKPs are produced by B. pumilus. Both strains respond with an increased production of the DKPs cyclo(-Gly-Pro), cyclo(-Ala-Pro), and cyclo(-Val-Pro) to the presence of pasteurized A. citreus cells after 4 h in a nutrient-poor liquid medium. In agar diffusion assays, these DKPs did not cause lysis zones in living cell lawns, but they did inhibit further growth of several pregrown test bacteria in microplates even at concentrations as low as 1 μg ml(-1). Antibiotic substances produced by B. pumilus after 20 h of cultivation in a special lysis medium showed lytic activity in cell-free extracts of B. pumilus culture supernatants.
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Affiliation(s)
- Christiane Brack
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Friedrich-Ludwig-Jahn-Str. 15, 17487, Greifswald, Germany,
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Klinger T, Baylard C, Beidler C, Boscary J, Bosch H, Dinklage A, Hartmann D, Helander P, Maßberg H, Peacock A, Pedersen T, Rummel T, Schauer F, Wegener L, Wolf R. Towards assembly completion and preparation of experimental campaigns of Wendelstein 7-X in the perspective of a path to a stellarator fusion power plant. Fusion Engineering and Design 2013. [DOI: 10.1016/j.fusengdes.2013.02.153] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hahn V, Mikolasch A, Schauer F. Cleavage and synthesis function of high and low redox potential laccases towards 4-morpholinoaniline and aminated as well as chlorinated phenols. Appl Microbiol Biotechnol 2013; 98:1609-20. [DOI: 10.1007/s00253-013-4984-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 04/30/2013] [Accepted: 05/02/2013] [Indexed: 11/24/2022]
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Lurtz C, Voss K, Hahn V, Schauer F, Wegmann J, Odermatt EK, Schmitz KP, Sternberg K. In vitro degradation and drug release of a biodegradable tissue adhesive based on functionalized 1,2-ethylene glycol bis(dilactic acid) and chitosan. J Mater Sci Mater Med 2013; 24:667-678. [PMID: 23274628 DOI: 10.1007/s10856-012-4826-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Accepted: 11/30/2012] [Indexed: 06/01/2023]
Abstract
Biodegradability and adhesive-associated local drug release are important aspects of research in tissue adhesive development. Therefore, this study focuses on investigating the in vitro degradation and drug release of a tissue adhesive consisting of hexamethylene diisocyanate functionalized 1,2-ethylene glycol bis(dilactic acid) and chitosan chloride. To prevent infections, ciprofloxacin hydrochloride (CPX·HCl) was incorporated into the adhesive. The influence of CPX·HCl on the adhesive reaction and adhesive strength was analyzed by FTIR-ATR-spectroscopy and tensile tests. The CPX·HCl release was investigated by HPLC. The degradation-induced changes at 37 °C were evaluated by gravimetric/morphological analyzes and micro-computer tomography. The antibiotic potential of the CPX·HCl loaded adhesive was determined by agar diffusion tests. The degradation tests revealed a mass loss of about 78 % after 52 weeks. The adhesive reaction velocity and tensile strength were not influenced by CPX·HCl. Using a 2 mg/g CPX·HCl loaded adhesive an inhibition of all tested bacteria was observed.
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Affiliation(s)
- Claudia Lurtz
- Institute for Biomedical Engineering, University of Rostock, Rostock, Germany
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Herter S, Schmidt M, Thompson ML, Mikolasch A, Schauer F. Investigating the effects of metals on phenol oxidase-producing nitrogen-fixing Azotobacter chroococcum. J Basic Microbiol 2012; 53:509-17. [PMID: 22961388 DOI: 10.1002/jobm.201100443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 03/03/2012] [Indexed: 11/05/2022]
Abstract
Expression of phenol oxidases (PO) in bacteria is often observed during physiological and morphological changes; in the nitrogen-fixing strain Azotobacter chroococcum SBUG 1484, it is accompanied by the formation of encysted cells and melanin. Herein, we studied the effects of copper and the depletion of the nitrogenase-relevant metals molybdenum and iron on physiological characteristics such as culture pigmentation, release of ortho-dihydroxylated melanin precursors, and expression of PO activity in A. chroococcum. Biomass production and melanogenic appearance were directly affected by the depletion of either iron or molybdenum, or in the absence of both metals. Only nitrogen-fixing cells growing in the presence of both metals and cultures supplemented with iron (molybdenum starved) showed the ability to produce an intensively brown-black melanin pigment typically associated with A. chroococcum. Accordingly, PO production was only detected in the presence of both metals and in iron-supplemented cultures starved of molybdenum. The total amount of catecholate siderophores produced by nitrogen-fixing melanogenic cells was considerably higher than in cultures starved of metal ions. Induction of enhanced PO activity was stimulated by additional copper sulfate, possibly related to cellular processes involved in the detoxification of this particular metal, and revealed distinct release of the ortho-dihydroxylated melanin precursors catechol and 3,4-dihydroxybenzoic acid.
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Affiliation(s)
- Susanne Herter
- Institute of Microbiology, Department of Applied Microbiology, University of Greifswald, Greifswald, Germany.
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Mikolasch A, Manda K, Schlüter R, Lalk M, Witt S, Seefeldt S, Hammer E, Schauer F, Jülich WD, Lindequist U. Comparative analyses of laccase-catalyzed amination reactions for production of novel β-lactam antibiotics. Biotechnol Appl Biochem 2012; 59:295-306. [DOI: 10.1002/bab.1026] [Citation(s) in RCA: 22] [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: 03/22/2012] [Accepted: 06/01/2012] [Indexed: 11/06/2022]
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Hahn V, Sünwoldt K, Mikolasch A, Schauer F. Two different primary oxidation mechanisms during biotransformation of thymol by gram-positive bacteria of the genera Nocardia and Mycobacterium. Appl Microbiol Biotechnol 2012; 97:1289-97. [DOI: 10.1007/s00253-012-4293-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Revised: 07/06/2012] [Accepted: 07/09/2012] [Indexed: 11/29/2022]
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Herter S, Mikolasch A, Michalik D, Hammer E, Schauer F, Bornscheuer U, Schmidt M. C–N coupling of 3-methylcatechol with primary amines using native and recombinant laccases from Trametes versicolor and Pycnoporus cinnabarinus. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.123] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Rasenack R, Schauer F, Kunze M, Proempeler HJ, Proempeler HJ. Reversibler Hydrops fetalis mit makulo-papulösem Exanthem der Schwangeren – Fallbericht. Z Geburtshilfe Neonatol 2011. [DOI: 10.1055/s-0031-1293433] [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: 10/15/2022]
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Fellinger J, Freundt S, Hathiramani D, Bykov V, Schauer F. Dynamic response analysis of superconducting coils in Wendelstein 7-X and mechanical quench test. Fusion Engineering and Design 2011. [DOI: 10.1016/j.fusengdes.2011.01.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Herter S, Mikolasch A, Schauer F. Identification of phenylalkane derivatives when Mycobacterium neoaurum and Rhodococcus erythropolis were cultured in the presence of various phenylalkanes. Appl Microbiol Biotechnol 2011; 93:343-55. [DOI: 10.1007/s00253-011-3415-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Revised: 05/24/2011] [Accepted: 05/24/2011] [Indexed: 10/18/2022]
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Herter S, Schmidt M, Thompson ML, Mikolasch A, Schauer F. Study of enzymatic properties of phenol oxidase from nitrogen-fixing Azotobacter chroococcum. AMB Express 2011; 1:14. [PMID: 21906365 PMCID: PMC3402154 DOI: 10.1186/2191-0855-1-14] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Accepted: 06/24/2011] [Indexed: 12/02/2022] Open
Abstract
Azotobacter chroococcum is a widespread free-living soil bacterium within the genus of Azotobacter known for assimilation of atmospheric nitrogen and subsequent conversion into nitrogenous compounds, which henceforth enrich the nitrogen content of soils. A. chroococcum SBUG 1484, isolated from composted earth, exhibits phenol oxidase (PO) activity when growing under nitrogen-fixing conditions. In the present study we provide incipient analysis of the crude PO activity expressed by A. chroococcum SBUG 1484 within comparative analysis to fungal crude PO from the white-rot fungus Pycnoporus cinnabarinus SBUG-M 1044 and tyrosinase (PPO) from the mushroom Agaricus bisporus in an attempt to reveal desirable properties for exploitation with future recombinant expression of this enzyme. Catalytic activity increased with pre-incubation at 35°C; however 70% of activity remained after pre-treatment at 50°C. Native A. chroococcum crude PO exhibited not only strong preference for 2,6-dimethoxyphenol, but also towards related methoxy-activated substrates as well as substituted ortho-benzenediols from over 40 substrates tested. Presence of CuSO4 enhanced crude phenol oxidase activity up to 30%, whereas NaN3 (0.1 mM) was identified as the most inhibiting substance of all inhibitors tested. Lowest inhibition of crude PO activity occurred after 60 minutes of incubation in presence of 15% methanol and ethanol with 63% and 77% remaining activities respectively, and presence of DMSO even led to increasing oxidizing activities. Substrate scope and inhibitor spectrum strongly differentiated A. chroococcum PO activity comprised in crude extracts from those of PPO and confirmed distinct similarities to fungal PO.
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Nhi-Cong LT, Mikolasch A, Awe S, Sheikhany H, Klenk HP, Schauer F. Oxidation of aliphatic, branched chain, and aromatic hydrocarbons by Nocardia cyriacigeorgica
isolated from oil-polluted sand samples collected in the Saudi Arabian Desert. J Basic Microbiol 2010; 50:241-53. [DOI: 10.1002/jobm.200900358] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [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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Hahn V, Mikolasch A, Manda K, Gördes D, Thurow K, Schauer F. Derivatization of amino acids by fungal laccases: Comparison of enzymatic and chemical methods. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2009.04.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sietmann R, Uebe R, Böer E, Bode R, Kunze G, Schauer F. Novel metabolic routes during the oxidation of hydroxylated aromatic acids by the yeast Arxula adeninivorans. J Appl Microbiol 2009; 108:789-799. [PMID: 19702859 DOI: 10.1111/j.1365-2672.2009.04474.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM To complete our study on tannin degradation via gallic acid by the biotechnologically interesting yeast Arxula adeninivorans as well as to characterize new degradation pathways of hydroxylated aromatic acids. METHODS AND RESULTS With glucose-grown cells of A. adeninivorans, transformation experiments with hydroxylated derivatives of benzoic acid were carried out. The 12 metabolites were analysed and identified by high performance liquid chromatography and GC/MS. The yeast is able to transform the derivatives by oxidative and nonoxidative decarboxylation as well as by methoxylation. The products of nonoxidative decarboxylation of protocatechuate and gallic acid are substrates for further ring fission. CONCLUSION Whereas other organisms use only one route of transformation, A. adeninivorans is able to carry out three different pathways (oxidative, nonoxidative decarboxylation and methoxylation) on one hydroxylated aromatic acid. The determination of the KM-values for protocatechuate and gallic acid in crude extracts of cells of A. adeninivorans cultivated with protocatechuate and gallic acid, respectively, suggests that the decarboxylation of protocatechuate and gallic acid may be catalysed by the same enzyme. SIGNIFICANCE AND IMPACT OF THE STUDY This transformation pathway of protocatechuate and gallic acid via nonoxidative decarboxylation up to ring fission is novel and has not been described so far. This is also the first report of nonoxidative decarboxylation of gallic acid by a eukaryotic micro-organism.
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Affiliation(s)
- R Sietmann
- Institute of Microbiology, Ernst-Moritz-Arndt-University of Greifswald, Greifswald, Germany
| | - R Uebe
- Institute of Microbiology, Ernst-Moritz-Arndt-University of Greifswald, Greifswald, Germany
| | - E Böer
- Leibniz Institute of Plant Genetics and Crop Plant Research, Gatersleben, Germany
| | - R Bode
- Institute of Microbiology, Ernst-Moritz-Arndt-University of Greifswald, Greifswald, Germany
| | - G Kunze
- Leibniz Institute of Plant Genetics and Crop Plant Research, Gatersleben, Germany
| | - F Schauer
- Institute of Microbiology, Ernst-Moritz-Arndt-University of Greifswald, Greifswald, Germany
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Gradt T, Schneider T, Lingertat J, Hathiramani D, Junghanns P, Assmus K, Schauer F. Cryogenic vacuum tests of scaled down narrow support elements for the W7-X coil system. Fusion Engineering and Design 2009. [DOI: 10.1016/j.fusengdes.2008.11.075] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lingertat J, Gradt T, Hathiramani D, Junghanns P, Laux M, Meine K, Schauer F, Schneider T. Tribological performance of MoS2 coatings in liquid helium and at high loads. Fusion Engineering and Design 2009. [DOI: 10.1016/j.fusengdes.2009.01.069] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Köppen M, Kißlinger J, Rummel T, Mönnich T, Schauer F, Bykov V. Simulations of W7-X magnet system fault scenarios involving short circuits. Fusion Engineering and Design 2009. [DOI: 10.1016/j.fusengdes.2008.12.125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bykov V, Schauer F, Egorov K, Tereshchenko A, van Eeten P, Dübner A, Sochor M, Zacharias D, Dudek A, Chen W, Czarkowski P, Sonnerup L, Fellinger J, Hathiramani D, Ye M, Dänner W. Structural analysis of W7-X: Overview. Fusion Engineering and Design 2009. [DOI: 10.1016/j.fusengdes.2008.12.113] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Dübner A, Zacharias D, Nagel M, Bykov V, Schauer F, Ihrke M. Structural analysis of the W7-X cryogenic pipe system. Fusion Engineering and Design 2009. [DOI: 10.1016/j.fusengdes.2008.11.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Duldhardt I, Gaebel J, Chrzanowski L, Nijenhuis I, Härtig C, Schauer F, Heipieper HJ. Adaptation of anaerobically grown Thauera aromatica, Geobacter sulfurreducens and Desulfococcus multivorans to organic solvents on the level of membrane fatty acid composition. Microb Biotechnol 2009; 3:201-9. [PMID: 21255320 PMCID: PMC3836581 DOI: 10.1111/j.1751-7915.2009.00124.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [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] [Indexed: 11/28/2022] Open
Abstract
The effect of different solvents and pollutants on the cellular fatty acid composition of three bacterial strains: Thauera aromatica, Geobacter sulfurreducens and Desulfococcus multivorans, representatives of diverse predominant anaerobic metabolisms was investigated. As the prevailing adaptive mechanism in cells of T. aromatica and G. sulfurreducens whose cellular fatty acids patterns were dominated by palmitic acid (C16:0) and palmitoleic acid (C16:1cis), the cells reacted by an increase in the degree of saturation of their membrane fatty acids when grown in the presence of sublethal concentrations of the chemicals. Next to palmitic acid C16:0, the fatty acid pattern of D. multivorans was dominated by anteiso‐branched fatty acids which are characteristic for several sulfate‐reducing bacteria. The cells responded to the solvents with an increase in the ratio of straight‐chain saturated (C14:0, C16:0, C18:0) to anteiso‐branched fatty acids (C15:0anteiso, C17:0anteiso, C17:1anteisoΔ9cis). The results show that anaerobic bacteria react with similar mechanisms like aerobic bacteria in order to adapt their membrane to toxic organic solvents. The observed adaptive modifications on the level of membrane fatty acid composition can only be carried out with de novo synthesis of the fatty acids which is strictly related to cell growth. As the growth rates of anaerobic bacteria are generally much lower than in the so far investigated aerobic bacteria, this adaptive response needs more time in anaerobic bacteria. This might be one explanation for the previously observed higher sensitivity of anaerobic bacteria when compared with aerobic ones.
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Affiliation(s)
- Ilka Duldhardt
- Departments of Environmental Biotechnology, Helmholtz Centre for Environmental Research - UFZ, Permoserstr. 15, 04318 Leipzig, Germany
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