1
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Phi MT, Singer H, Zäh F, Haisch C, Schneider S, Op den Camp HJM, Daumann LJ. Assessing Lanthanide-Dependent Methanol Dehydrogenase Activity: The Assay Matters. Chembiochem 2024; 25:e202300811. [PMID: 38269599 DOI: 10.1002/cbic.202300811] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/22/2023] [Indexed: 01/26/2024]
Abstract
Artificial dye-coupled assays have been widely adopted as a rapid and convenient method to assess the activity of methanol dehydrogenases (MDH). Lanthanide(Ln)-dependent XoxF-MDHs are able to incorporate different lanthanides (Lns) in their active site. Dye-coupled assays showed that the earlier Lns exhibit a higher enzyme activity than the late Lns. Despite widespread use, there are limitations: oftentimes a pH of 9 and activators are required for the assay. Moreover, Ln-MDH variants are not obtained by isolation from the cells grown with the respective Ln, but by incubation of an apo-MDH with the Ln. Herein, we report the cultivation of Ln-dependent methanotroph Methylacidiphilum fumariolicum SolV with nine different Lns, the isolation of the respective MDHs and the assessment of the enzyme activity using the dye-coupled assay. We compare these results with a protein-coupled assay using its physiological electron acceptor cytochrome cGJ (cyt cGJ ). Depending on the assay, two distinct trends are observed among the Ln series. The specific enzyme activity of La-, Ce- and Pr-MDH, as measured by the protein-coupled assay, exceeds that measured by the dye-coupled assay. This suggests that early Lns also have a positive effect on the interaction between XoxF-MDH and its cyt cGJ thereby increasing functional efficiency.
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Affiliation(s)
- Manh Tri Phi
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Helena Singer
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Felix Zäh
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Christoph Haisch
- Faculty of Chemistry, Technical University of Munich, Lichtenbergstr. 4, 85748, Garching, Germany
| | - Sabine Schneider
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Huub J M Op den Camp
- Department of Microbiology, Research Institute for Biological and Environmental Sciences, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Lena J Daumann
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
- Chair of Bioinorganic Chemistry, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
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2
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Singer H, Steudtner R, Sottorff I, Drobot B, Pol A, Op den Camp HJM, Daumann LJ. Learning from nature: recovery of rare earth elements by the extremophilic bacterium Methylacidiphilum fumariolicum. Chem Commun (Camb) 2023. [PMID: 37382581 DOI: 10.1039/d3cc01341c] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
We present the extremophilic bacterium Methylacidiphilum fumariolicum SolV as a platform for the recovery of rare earth elements (REE). Strain SolV is able to selectively extract the light REE from artificial industrial waste sources, natural REE-containing and post-mining waters. Upscaling, different media composition and accumulation over several cycles were successfully implemented, underlining the potential for bio-recovery of REE.
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Affiliation(s)
- Helena Singer
- Department of Chemistry, Ludwig-Maximilians-University Munich, 81377 München, Germany.
| | - Robin Steudtner
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf e.V., 01328 Dresden, Germany
| | - Ignacio Sottorff
- Department of Chemistry, Ludwig-Maximilians-University Munich, 81377 München, Germany.
| | - Björn Drobot
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf e.V., 01328 Dresden, Germany
| | - Arjan Pol
- Department of Microbiology, Research Institute for Biological and Environmental Sciences, Radboud University Nijmegen, 6525 AJ Nijmegen, The Netherlands
| | - Huub J M Op den Camp
- Department of Microbiology, Research Institute for Biological and Environmental Sciences, Radboud University Nijmegen, 6525 AJ Nijmegen, The Netherlands
| | - Lena J Daumann
- Department of Chemistry, Ludwig-Maximilians-University Munich, 81377 München, Germany.
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3
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Daumann LJ, Janßen R, Vetsova VA, Putz D, Mayer P. Modular Synthesis of New Pyrroloquinoline Quinone Derivatives. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0041-1738426] [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] [Indexed: 11/09/2022]
Abstract
AbstractPyrroloquinoline quinone (PQQ) is an important cofactor of methanol dehydrogenases and glycose dehydrogenases. In addition, isolated PQQ is used as a central component in sensors and biomimetic complexes. The synthesis of PQQ derivatives is of interest for developing new alcohol oxidation catalysts and redox sensors. This work describes a modular synthesis for derivatives of PQQ bearing methyl and ketone groups instead of carboxylic acid moieties. These modifications reduce the possible coordination sites of PQQ for metal ions outside the protein environment.
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4
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Daumann LJ, Pol A, Op den Camp HJM, Martinez-Gomez NC. A perspective on the role of lanthanides in biology: Discovery, open questions and possible applications. Adv Microb Physiol 2022; 81:1-24. [PMID: 36167440 DOI: 10.1016/bs.ampbs.2022.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Because of their use in high technologies like computers, smartphones and renewable energy applications, lanthanides (belonging to the group of rare earth elements) are essential for our daily lives. A range of applications in medicine and biochemical research made use of their photo-physical properties. The discovery of a biological role for lanthanides has boosted research in this new field. Several methanotrophs and methylotrophs are strictly dependent on the presence of lanthanides in the growth medium while others show a regulatory response. After the first demonstration of a lanthanide in the active site of the XoxF-type pyrroloquinoline quinone methanol dehydrogenases, follow-up studies showed the same for other pyrroloquinoline quinone-containing enzymes. In addition, research focused on the effect of lanthanides on regulation of gene expression and uptake mechanism into bacterial cells. This review briefly describes the discovery of the role of lanthanides in biology and focuses on open questions in biological lanthanide research and possible application of lanthanide-containing bacteria and enzymes in recovery of these special elements.
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Affiliation(s)
- Lena J Daumann
- Department of Chemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Arjan Pol
- Department of Microbiology, RIBES, Radboud University, Nijmegen, The Netherlands
| | - Huub J M Op den Camp
- Department of Microbiology, RIBES, Radboud University, Nijmegen, The Netherlands.
| | - N Cecilia Martinez-Gomez
- Department of Plant and Microbial Biology, University of California, Berkeley, California, United States
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5
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Danaf NA, Kretzschmar J, Jahn B, Singer H, Pol A, Op den Camp HJM, Steudtner R, Lamb DC, Drobot B, Daumann LJ. Studies of pyrroloquinoline quinone species in solution and in lanthanide-dependent methanol dehydrogenases. Phys Chem Chem Phys 2022; 24:15397-15405. [PMID: 35704886 DOI: 10.1039/d2cp00311b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pyrroloquinoline quinone (PQQ) is a redox cofactor in calcium- and lanthanide-dependent alcohol dehydrogenases that has been known and studied for over 40 years. Despite its long history, many questions regarding its fluorescence properties, speciation in solution and in the active site of alcohol dehydrogenase remain open. Here we investigate the effects of pH and temperature on the distribution of different PQQ species (H3PQQ to PQQ3- in addition to water adducts and in complex with lanthanides) with NMR and UV-Vis spectroscopy as well as time-resolved laser-induced fluorescence spectroscopy (TRLFS). Using a europium derivative from a new, recently-discovered class of lanthanide-dependent methanol dehydrogenase (MDH) enzymes, we utilized two techniques to monitor Ln binding to the active sites of these enzymes. Employing TRLFS, we were able to follow Eu(III) binding directly to the active site of MDH using its luminescence and could quantify three Eu(III) states: Eu(III) in the active site of MDH, but also in solution as PQQ-bound Eu(III) and in the aquo-ion form. Additionally, we used the antenna effect to study PQQ and simultaneously Eu(III) in the active site.
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Affiliation(s)
- Nader Al Danaf
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5 - 13, 81377 München, Germany. .,Center for NanoScience, Ludwig-Maximilians-University Munich, Geschwister-Scholl Platz 1, 80539 München, Germany
| | - Jerome Kretzschmar
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf e.V., Bautzner Landstraße 400, 01328 Dresden, Germany.
| | - Berenice Jahn
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5 - 13, 81377 München, Germany.
| | - Helena Singer
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5 - 13, 81377 München, Germany.
| | - Arjan Pol
- Department of Microbiology, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Huub J M Op den Camp
- Department of Microbiology, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Robin Steudtner
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf e.V., Bautzner Landstraße 400, 01328 Dresden, Germany.
| | - Don C Lamb
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5 - 13, 81377 München, Germany. .,Center for NanoScience, Ludwig-Maximilians-University Munich, Geschwister-Scholl Platz 1, 80539 München, Germany
| | - Björn Drobot
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf e.V., Bautzner Landstraße 400, 01328 Dresden, Germany.
| | - Lena J Daumann
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5 - 13, 81377 München, Germany.
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6
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Schäfer A, Vetsova VA, Schneider EK, Kappes M, Seitz M, Daumann LJ, Weis P. Ion Mobility Studies of Pyrroloquinoline Quinone Aza-Crown Ether-Lanthanide Complexes. J Am Soc Mass Spectrom 2022; 33:722-730. [PMID: 35300493 DOI: 10.1021/jasms.2c00023] [Citation(s) in RCA: 1] [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] [Indexed: 06/14/2023]
Abstract
Lanthanide-dependent enzymes and their biomimetic complexes have arisen as an interesting target of research in the past decade. These enzymes, specifically, pyrroloquinoline quinone (PQQ)-bearing methanol dehydrogenases, efficiently convert alcohols to the respective aldehydes. To rationally design bioinspired alcohol dehydrogenation catalysts, it is imperative to understand the species involved in catalysis. However, given the extremely flexible coordination sphere of lanthanides, it is often difficult to assess the number and nature of the active species. Here, we show how such questions can be addressed by using a combination of ion mobility spectrometry, mass spectrometry, and quantum-chemical calculations to study the test systems PQQ and lanthanide-PQQ-crown ether ligand complexes. Specifically, we determine the gas-phase structures of [PQQH2]-, [PQQH2+H2O]-, [PQQH2+MeOH]-, [PQQ-15c5+H]+, and [PQQ-15c5+Ln+NO3]2+ (Ln = La to Lu, except Pm). In the latter case, a trend to smaller collision cross sections across the lanthanide series is clearly observable, in line with the well-known lanthanide contraction. We hope that in the future such investigations will help to guide the design and understanding of lanthanide-based biomimetic complexes optimized for catalytic function.
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Affiliation(s)
- Alexander Schäfer
- Karlsruhe Institute of Technology Institute of Physical Chemistry Fritz-Haber-Weg 2, 76128 Karlsruhe, Germany
| | - Violeta A Vetsova
- Department of Chemistry Ludwig Maximilian University of Munich Butenandtstraße 5-13, 81377 Munich, Germany
| | - Erik K Schneider
- Karlsruhe Institute of Technology Institute of Physical Chemistry Fritz-Haber-Weg 2, 76128 Karlsruhe, Germany
| | - Manfred Kappes
- Karlsruhe Institute of Technology Institute of Physical Chemistry Fritz-Haber-Weg 2, 76128 Karlsruhe, Germany
- Karlsruhe Institute of Technology Institute of Nanotechnology Hermann von Helmholtz Pl 1,76344 Eggenstein Leopoldshafen, Germany
| | - Michael Seitz
- University of Tübingen Institute of Inorganic Chemistry Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Lena J Daumann
- Department of Chemistry Ludwig Maximilian University of Munich Butenandtstraße 5-13, 81377 Munich, Germany
| | - Patrick Weis
- Karlsruhe Institute of Technology Institute of Physical Chemistry Fritz-Haber-Weg 2, 76128 Karlsruhe, Germany
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7
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Gutenthaler SM, Tsushima S, Steudtner R, Gailer M, Hoffmann-Röder A, Drobot B, Daumann LJ. Lanmodulin peptides – unravelling the binding of the EF-Hand loop sequences stripped from the structural corset. Inorg Chem Front 2022; 9:4009-4021. [PMID: 36091973 PMCID: PMC9362731 DOI: 10.1039/d2qi00933a] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/23/2022] [Indexed: 12/25/2022]
Abstract
Lanmodulin (LanM), a naturally lanthanide (Ln)-binding protein with a remarkable selectivity for Lns over Ca(ii) and affinities in the picomolar range, is an attractive target to address challenges in Ln separation. Why LanM has such a high selectivity is currently not entirely understood; both specific amino acid sequences of the EF-Hand loops and cooperativity effects have been suggested. Here, we removed the effect of cooperativity and synthesised all four 12-amino acid EF-Hand loop peptides, and investigated their affinity for two Lns (Eu(iii) and Tb(iii)), the actinide Cm(iii) and Ca(ii). Using isothermal titration calorimetry and time-resolved laser fluorescence spectroscopy (TRLFS) combined with parallel factor analysis, we show that the four short peptides behave very similarly, having affinities in the micromolar range for Eu(iii) and Tb(iii). Ca(ii) was shown not to bind to the peptides, which was verified with circular dichroism spectroscopy. This technique also revealed an increase in structural organisation upon Eu(iii) addition, which was supported by molecular dynamics simulations. Lastly, we put Eu(iii) and Cm(iii) in direct competition using TRLFS. Remarkably, a slightly higher affinity for Cm(iii) was found. Our results demonstrate that the picomolar affinities in LanM are largely an effect of pre-structuring and therefore a reduction of flexibility in combination with cooperative effects, and that all EF-Hand loops possess similar affinities when detached from the protein backbone, albeit still retaining the high selectivity for lanthanides and actinides over calcium. Taking a closer look at Lanmodulin’s remarkable selectivity for lanthanides (Ln) over Ca(ii) and high Ln/actinide affinities on the amino acid level by investigating the four binding-loops as peptides with Ca(ii), Eu(iii), Tb(iii) and Cm(iii).![]()
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Affiliation(s)
- Sophie M. Gutenthaler
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstraße 5-13, 81377 München, Germany
| | - Satoru Tsushima
- Institute of Resource Ecology Helmholtz-Zentrum Dresden-Rossendorf e.V. Bautzner Landstraße 400, 01328 Dresden, Germany
- International Research Frontiers Initiative, Institute of Innovative Research, Tokyo Institute of Technology, Meguro 152-8550, Tokyo, Japan
| | - Robin Steudtner
- Institute of Resource Ecology Helmholtz-Zentrum Dresden-Rossendorf e.V. Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Manuel Gailer
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstraße 5-13, 81377 München, Germany
| | - Anja Hoffmann-Röder
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstraße 5-13, 81377 München, Germany
| | - Björn Drobot
- Institute of Resource Ecology Helmholtz-Zentrum Dresden-Rossendorf e.V. Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Lena J. Daumann
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstraße 5-13, 81377 München, Germany
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8
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Singer H, Drobot B, Zeymer C, Steudtner R, Daumann LJ. Americium preferred: lanmodulin, a natural lanthanide-binding protein favors an actinide over lanthanides. Chem Sci 2021; 12:15581-15587. [PMID: 35003587 PMCID: PMC8654097 DOI: 10.1039/d1sc04827a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 09/01/2021] [Accepted: 10/25/2021] [Indexed: 11/21/2022] Open
Abstract
The separation and recycling of lanthanides is an active area of research with a growing demand that calls for more environmentally friendly lanthanide sources. Likewise, the efficient and industrial separation of lanthanides from the minor actinides (Np, Am–Fm) is one of the key questions for closing the nuclear fuel cycle; reducing costs and increasing safety. With the advent of the field of lanthanide-dependent bacterial metabolism, bio-inspired applications are in reach. Here, we utilize the natural lanthanide chelator lanmodulin and the luminescent probes Eu3+ and Cm3+ to investigate the inter-metal competition behavior of all lanthanides (except Pm) and the major actinide plutonium as well as three minor actinides neptunium, americium and curium to lanmodulin. Using time-resolved laser-induced fluorescence spectroscopy we show that lanmodulin has the highest relative binding affinity to Nd3+ and Eu3+ among the lanthanide series. When equimolar mixtures of Cm3+ and Am3+ are added to lanmodulin, lanmodulin preferentially binds to Am3+ over Cm3+ whilst Nd3+ and Cm3+ bind with similar relative affinity. The results presented show that a natural lanthanide-binding protein can bind a major and various minor actinides with high relative affinity, paving the way to bio-inspired separation applications. In addition, an easy and versatile method was developed, using the fluorescence properties of only two elements, Eu and Cm, for inter-metal competition studies regarding lanthanides and selected actinides and their binding to biological molecules. In need of environmentally friendly methods for the separation and recycling of lanthanides and actinides, the binding of the protein lanmodulin to lanthanides and actinides was studied using time resolved laser induced fluorescence spectroscopy.![]()
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Affiliation(s)
- Helena Singer
- Department of Chemistry, Ludwig-Maximilians-University Munich Butenandtstraße 5 - 13 81377 München Germany
| | - Björn Drobot
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf e.V. Bautzner Landstraße 400 01328 Dresden Germany
| | - Cathleen Zeymer
- Department of Chemistry, Technische Universität München Lichtenbergstraße 4 85748 Garching Germany
| | - Robin Steudtner
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf e.V. Bautzner Landstraße 400 01328 Dresden Germany
| | - Lena J Daumann
- Department of Chemistry, Ludwig-Maximilians-University Munich Butenandtstraße 5 - 13 81377 München Germany
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9
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Jonasson NSW, Janßen R, Menke A, Zott FL, Zipse H, Daumann LJ. Cover Feature: TET‐Like Oxidation in 5‐Methylcytosine and Derivatives: A Computational and Experimental Study (ChemBioChem 23/2021). Chembiochem 2021. [DOI: 10.1002/cbic.202100509] [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: 11/11/2022]
Affiliation(s)
- Niko S. W. Jonasson
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstr. 5–13 81377 München Germany
| | - Rachel Janßen
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstr. 5–13 81377 München Germany
| | - Annika Menke
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstr. 5–13 81377 München Germany
| | - Fabian L. Zott
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstr. 5–13 81377 München Germany
| | - Hendrik Zipse
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstr. 5–13 81377 München Germany
| | - Lena J. Daumann
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstr. 5–13 81377 München Germany
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10
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Jonasson NSW, Janßen R, Menke A, Zott FL, Zipse H, Daumann LJ. TET-Like Oxidation in 5-Methylcytosine and Derivatives: A Computational and Experimental Study. Chembiochem 2021; 22:3333-3340. [PMID: 34498783 PMCID: PMC9293240 DOI: 10.1002/cbic.202100420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/15/2021] [Revised: 09/08/2021] [Indexed: 01/05/2023]
Abstract
The epigenetic marker 5‐methylcytosine (5mC) is an important factor in DNA modification and epigenetics. It can be modified through a three‐step oxidation performed by ten‐eleven‐translocation (TET) enzymes and we have previously reported that the iron(IV)‐oxo complex [Fe(O)(Py5Me2H)]2+ (1) can oxidize 5mC. Here, we report the reactivity of this iron(IV)‐oxo complex towards a wider scope of methylated cytosine and uracil derivatives relevant for synthetic DNA applications, such as 1‐methylcytosine (1mC), 5‐methyl‐iso‐cytosine (5miC) and thymine (T/5mU). The observed kinetic parameters are corroborated by calculation of the C−H bond energies at the reactive sites which was found to be an efficient tool for reaction rate prediction of 1 towards methylated DNA bases. We identified oxidation products of methylated cytosine derivatives using HPLC‐MS and GC‐MS. Thereby, we shed light on the impact of the methyl group position and resulting C−H bond dissociation energies on reactivity towards TET‐like oxidation.
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Affiliation(s)
- Niko S W Jonasson
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstr. 5-13, 81377, München, Germany
| | - Rachel Janßen
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstr. 5-13, 81377, München, Germany
| | - Annika Menke
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstr. 5-13, 81377, München, Germany
| | - Fabian L Zott
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstr. 5-13, 81377, München, Germany
| | - Hendrik Zipse
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstr. 5-13, 81377, München, Germany
| | - Lena J Daumann
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstr. 5-13, 81377, München, Germany
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11
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Affiliation(s)
- Lena J. Daumann
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 München, Germany
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12
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Neururer F, Liu S, Leitner D, Baltrun M, Fisher KR, Kopacka H, Wurst K, Daumann LJ, Munz D, Hohloch S. Mesoionic Carbenes in Low- to High-Valent Vanadium Chemistry. Inorg Chem 2021; 60:15421-15434. [PMID: 34590834 PMCID: PMC8527456 DOI: 10.1021/acs.inorgchem.1c02087] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Indexed: 12/12/2022]
Abstract
We report the synthesis of vanadium(V) oxo complex 1 with a pincer-type dianionic mesoionic carbene (MIC) ligand L1 and the general formula [VOCl(L1)]. A comparison of the structural (SC-XRD), electronic (UV-vis), and electrochemical (cyclic voltammetry) properties of 1 with the benzimidazolinylidene congener 2 (general formula [VOCl(L2)]) shows that the MIC is a stronger donor also for early transition metals with low d-electron population. Since electrochemical studies revealed both complexes to be reversibly reduced, the stronger donor character of MICs was not only demonstrated for the vanadium(V) but also for the vanadium(IV) oxidation state by isolating the reduced vanadium(IV) complexes [Co(Cp*)2][1] and [Co(Cp*)2][2] ([Co(Cp*)2] = decamethylcobaltocenium). The electronic structures of the compounds were investigated by computational methods. Complex 1 was found to be a moderate precursor for salt metathesis reactions, showing selective reactivity toward phenolates or secondary amides, but not toward primary amides and phosphides, thiophenols, or aryls/alkyls donors. Deoxygenation with electron-rich phosphines failed to give the desired vanadium(III) complex. However, treatment of the deprotonated ligand precursor with vanadium(III) trichloride resulted in the clean formation of the corresponding MIC vanadium(III) complex 6, which undergoes a clean two-electron oxidation with organic azides yielding the corresponding imido complexes. The reaction with TMS-N3 did not afford a nitrido complex, but instead the imido complex 10. This study reveals that, contrary to popular belief, MICs are capable of supporting early transition-metal complexes in a variety of oxidation states, thus making them promising candidates for the activation of small molecules and redox catalysis.
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Affiliation(s)
- Florian
R. Neururer
- Institute
of Inorganic, General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Shenyu Liu
- Faculty
of Science, Department of Chemistry, University
of Paderborn, Warburger Straße 100, 33098 Paderborn, Germany
| | - Daniel Leitner
- Institute
of Inorganic, General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Marc Baltrun
- Faculty
of Science, Department of Chemistry, University
of Paderborn, Warburger Straße 100, 33098 Paderborn, Germany
| | - Katherine R. Fisher
- Department
Chemie, Ludwigs-Maximilians-University Munich, Butenandtstraße 5-13 Haus D, 81377 Munich, Germany
| | - Holger Kopacka
- Institute
of Inorganic, General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Klaus Wurst
- Institute
of Inorganic, General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Lena J. Daumann
- Department
Chemie, Ludwigs-Maximilians-University Munich, Butenandtstraße 5-13 Haus D, 81377 Munich, Germany
| | - Dominik Munz
- Fakultät
NT, Inorganic Chemistry: Coordination Chemistry, Saarland University, Campus C4.1, 66123 Saarbrücken, Germany
| | - Stephan Hohloch
- Institute
of Inorganic, General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
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13
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Schmidl D, Jonasson NSW, Korytiaková E, Carell T, Daumann LJ. Biomimetic Iron Complex Achieves TET Enzyme Reactivity**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107277] [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: 11/06/2022]
Affiliation(s)
- David Schmidl
- Department Chemie Ludwig-Maximilians-University München Butenandtstr. 5–13, Haus D München Germany
| | - Niko S. W. Jonasson
- Department Chemie Ludwig-Maximilians-University München Butenandtstr. 5–13, Haus D München Germany
| | - Eva Korytiaková
- Department Chemie Ludwig-Maximilians-University München Butenandtstr. 5–13, Haus D München Germany
| | - Thomas Carell
- Department Chemie Ludwig-Maximilians-University München Butenandtstr. 5–13, Haus D München Germany
| | - Lena J. Daumann
- Department Chemie Ludwig-Maximilians-University München Butenandtstr. 5–13, Haus D München Germany
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14
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Schmidl D, Jonasson NSW, Korytiaková E, Carell T, Daumann LJ. Biomimetic Iron Complex Achieves TET Enzyme Reactivity*. Angew Chem Int Ed Engl 2021; 60:21457-21463. [PMID: 34181314 PMCID: PMC8518650 DOI: 10.1002/anie.202107277] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 05/31/2021] [Revised: 06/23/2021] [Indexed: 12/12/2022]
Abstract
The epigenetic marker 5-methyl-2'-deoxycytidine (5mdC) is the most prevalent modification to DNA. It is removed inter alia via an active demethylation pathway: oxidation by Ten-Eleven Translocation 5-methyl cytosine dioxygenase (TET) and subsequent removal via base excision repair or direct demodification. Recently, we have shown that the synthetic iron(IV)-oxo complex [FeIV (O)(Py5 Me2 H)]2+ (1) can serve as a biomimetic model for TET by oxidizing the nucleobase 5-methyl cytosine (5mC) to its natural metabolites. In this work, we demonstrate that nucleosides and even short oligonucleotide strands can also serve as substrates, using a range of HPLC and MS techniques. We found that the 5-position of 5mC is oxidized preferably by 1, with side reactions occurring only at the strand ends of the used oligonucleotides. A detailed study of the reactivity of 1 towards nucleosides confirms our results; that oxidation of the anomeric center (1') is the most common side reaction.
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Affiliation(s)
- David Schmidl
- Department ChemieLudwig-Maximilians-University MünchenButenandtstr. 5–13, Haus DMünchenGermany
| | - Niko S. W. Jonasson
- Department ChemieLudwig-Maximilians-University MünchenButenandtstr. 5–13, Haus DMünchenGermany
| | - Eva Korytiaková
- Department ChemieLudwig-Maximilians-University MünchenButenandtstr. 5–13, Haus DMünchenGermany
| | - Thomas Carell
- Department ChemieLudwig-Maximilians-University MünchenButenandtstr. 5–13, Haus DMünchenGermany
| | - Lena J. Daumann
- Department ChemieLudwig-Maximilians-University MünchenButenandtstr. 5–13, Haus DMünchenGermany
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15
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Vetsova VA, Fisher KR, Lumpe H, Schäfer A, Schneider EK, Weis P, Daumann LJ. Pyrroloquinoline Quinone Aza-Crown Ether Complexes as Biomimetics for Lanthanide and Calcium Dependent Alcohol Dehydrogenases*. Chemistry 2021; 27:10087-10098. [PMID: 33872420 PMCID: PMC8361747 DOI: 10.1002/chem.202100346] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 01/28/2021] [Indexed: 12/23/2022]
Abstract
Understanding the role of metal ions in biology can lead to the development of new catalysts for several industrially important transformations. Lanthanides are the most recent group of metal ions that have been shown to be important in biology, that is, in quinone‐dependent methanol dehydrogenases (MDH). Here we evaluate a literature‐known pyrroloquinoline quinone (PQQ) and 1‐aza‐15‐crown‐5 based ligand platform as scaffold for Ca2+, Ba2+, La3+ and Lu3+ biomimetics of MDH and we evaluate the importance of ligand design, charge, size, counterions and base for the alcohol oxidation reaction using NMR spectroscopy. In addition, we report a new straightforward synthetic route (3 steps instead of 11 and 33 % instead of 0.6 % yield) for biomimetic ligands based on PQQ. We show that when studying biomimetics for MDH, larger metal ions and those with lower charge in this case promote the dehydrogenation reaction more effectively and that this is likely an effect of the ligand design which must be considered when studying biomimetics. To gain more information on the structures and impact of counterions of the complexes, we performed collision induced dissociation (CID) experiments and observe that the nitrates are more tightly bound than the triflates. To resolve the structure of the complexes in the gas phase we combined DFT‐calculations and ion mobility measurements (IMS). Furthermore, we characterized the obtained complexes and reaction mixtures using Electron Paramagnetic Resonance (EPR) spectroscopy and show the presence of a small amount of quinone‐based radical.
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Affiliation(s)
- Violeta A Vetsova
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Katherine R Fisher
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Henning Lumpe
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Alexander Schäfer
- Karlsruhe Institute of Technology, Institute of Physical Chemistry, Fritz-Haber-Weg 2, 76128, Karlsruhe, Germany
| | - Erik K Schneider
- Karlsruhe Institute of Technology, Institute of Physical Chemistry, Fritz-Haber-Weg 2, 76128, Karlsruhe, Germany
| | - Patrick Weis
- Karlsruhe Institute of Technology, Institute of Physical Chemistry, Fritz-Haber-Weg 2, 76128, Karlsruhe, Germany
| | - Lena J Daumann
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, 81377, Munich, Germany
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16
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Gutenthaler SM, Phi MT, Singer H, Daumann LJ. Activity assays of methanol dehydrogenases. Methods Enzymol 2021; 650:57-79. [PMID: 33867025 DOI: 10.1016/bs.mie.2021.01.045] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The field of methanol dehydrogenases (MDHs) has experienced revival in the recent decade due to the observation of lanthanide-dependent MDH, in addition to widely known calcium-MDH. With the advent of lanthanide-dependent alcohol dehydrogenases, the need for reliable assays to evaluate and compare activities between different MDHs is obvious: from extremophilic to neutrophilic organisms, or with different lanthanide ions in the active site. Here we outline four assays that have been reported for Ln-MDH, discussing the advantages and disadvantages of the assays and their components. It should be noted, in 1990Day and Anthony produced a comprehensive summary in Methods in Enzymology on the available methods for Ca-MDH assays at the time (Day & Anthony, 1990). This chapter is an updated appraisal of the most important developments in the last 30years.
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Affiliation(s)
- Sophie M Gutenthaler
- Department of Chemistry, Ludwig-Maximilians-Universität München, München, Germany
| | - Manh Tri Phi
- Department of Chemistry, Ludwig-Maximilians-Universität München, München, Germany
| | - Helena Singer
- Department of Chemistry, Ludwig-Maximilians-Universität München, München, Germany
| | - Lena J Daumann
- Department of Chemistry, Ludwig-Maximilians-Universität München, München, Germany.
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17
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Menke A, Dubini RCA, Mayer P, Rovó P, Daumann LJ. Formation of Cisplatin Adducts with the Epigenetically Relevant Nucleobase 5‐Methylcytosine. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202000898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Annika Menke
- Department Chemie Ludwig‐Maximilians‐Universität München Butenandtstraße 5‐13 81377 München Germany
| | - Romeo C. A. Dubini
- Department Chemie Ludwig‐Maximilians‐Universität München Butenandtstraße 5‐13 81377 München Germany
| | - Peter Mayer
- Department Chemie Ludwig‐Maximilians‐Universität München Butenandtstraße 5‐13 81377 München Germany
| | - Petra Rovó
- Department Chemie Ludwig‐Maximilians‐Universität München Butenandtstraße 5‐13 81377 München Germany
| | - Lena J. Daumann
- Department Chemie Ludwig‐Maximilians‐Universität München Butenandtstraße 5‐13 81377 München Germany
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18
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Menke A, Dubini RCA, Mayer P, Rovó P, Daumann LJ. Cover Feature: Formation of Cisplatin Adducts with the Epigenetically Relevant Nucleobase 5‐Methylcytosine (Eur. J. Inorg. Chem. 1/2021). Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202001103] [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: 11/10/2022]
Affiliation(s)
- Annika Menke
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5-13 München 81377 Germany
| | - Romeo C. A. Dubini
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5-13 München 81377 Germany
| | - Peter Mayer
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5-13 München 81377 Germany
| | - Petra Rovó
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5-13 München 81377 Germany
| | - Lena J. Daumann
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5-13 München 81377 Germany
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19
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Lumpe H, Mayer P, Daumann LJ. Crystal structure of a calcium(II)-pyrroloquinoline quinone (PQQ) complex outside a protein environment. Acta Crystallogr C Struct Chem 2020; 76:1051-1056. [PMID: 33273141 PMCID: PMC7716187 DOI: 10.1107/s2053229620014278] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 10/27/2020] [Indexed: 11/24/2022]
Abstract
Pyrroloquinoline quinone (PQQ) is an important cofactor of calcium- and lanthanide-dependent alcohol dehydrogenases. The crystal structure of a Ca–PQQ complex (Ca3PQQ2·13H2O) is reported for the first time outside a protein environment. Pyrroloquinoline quinone (PQQ) is an important cofactor of calcium- and lanthanide-dependent alcohol dehydrogenases, and has been known for over 30 years. Crystal structures of Ca–MDH enzymes (MDH is methanol dehydrogenase) have been known for some time; however, crystal structures of PQQ with biorelevant metal ions have been lacking in the literature for decades. We report here the first crystal structure analysis of a Ca–PQQ complex outside the protein environment, namely, poly[[undecaaquabis(μ-4,5-dioxo-4,5-dihydro-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylato)tricalcium(II)] dihydrate], {[Ca3(C14H3N2O8)2(H2O)11]·2H2O}n. The complex crystallized as Ca3PQQ2·13H2O with Ca2+ in three different positions and PQQ3−, including an extensive hydrogen-bond network. Similarities and differences to the recently reported structure with biorelevant europium (Eu2PQQ2) are discussed.
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Affiliation(s)
- Henning Lumpe
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Munich, Bavaria 81377, Germany
| | - Peter Mayer
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Munich, Bavaria 81377, Germany
| | - Lena J Daumann
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Munich, Bavaria 81377, Germany
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20
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Lumpe H, Menke A, Haisch C, Mayer P, Kabelitz A, Yusenko KV, Guilherme Buzanich A, Block T, Pöttgen R, Emmerling F, Daumann LJ. The Earlier the Better: Structural Analysis and Separation of Lanthanides with Pyrroloquinoline Quinone. Chemistry 2020; 26:10133-10139. [PMID: 32497263 PMCID: PMC7496819 DOI: 10.1002/chem.202002653] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Indexed: 12/18/2022]
Abstract
Lanthanides (Ln) are critical raw materials, however, their mining and purification have a considerable negative environmental impact and sustainable recycling and separation strategies for these elements are needed. In this study, the precipitation and solubility behavior of Ln complexes with pyrroloquinoline quinone (PQQ), the cofactor of recently discovered lanthanide (Ln) dependent methanol dehydrogenase (MDH) enzymes, is presented. In this context, the molecular structure of a biorelevant europium PQQ complex was for the first time elucidated outside a protein environment. The complex crystallizes as an inversion symmetric dimer, Eu2 PQQ2 , with binding of Eu in the biologically relevant pocket of PQQ. LnPQQ and Ln1Ln2PQQ complexes were characterized by using inductively coupled plasma mass spectrometry (ICP-MS), infrared (IR) spectroscopy, 151 Eu-Mössbauer spectroscopy, X-ray total scattering, and extended X-ray absorption fine structure (EXAFS). It is shown that a natural enzymatic cofactor is capable to achieve separation by precipitation of the notoriously similar, and thus difficult to separate, lanthanides to some extent.
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Affiliation(s)
- Henning Lumpe
- Department of ChemistryLudwig-Maximilians-University MunichButenandtstraße 5–1381377MünchenGermany
| | - Annika Menke
- Department of ChemistryLudwig-Maximilians-University MunichButenandtstraße 5–1381377MünchenGermany
| | - Christoph Haisch
- Chair of Analytical Chemistry and Water ChemistryTechnical University of MunichMarchioninistraße 1781377MünchenGermany
| | - Peter Mayer
- Department of ChemistryLudwig-Maximilians-University MunichButenandtstraße 5–1381377MünchenGermany
| | - Anke Kabelitz
- Division Structure AnalysisFederal Institute for Materials Research and Testing (BAM)Richard-Willstätter-Straße 1112489BerlinGermany
| | - Kirill V. Yusenko
- Division Structure AnalysisFederal Institute for Materials Research and Testing (BAM)Richard-Willstätter-Straße 1112489BerlinGermany
| | - Ana Guilherme Buzanich
- Division Structure AnalysisFederal Institute for Materials Research and Testing (BAM)Richard-Willstätter-Straße 1112489BerlinGermany
| | - Theresa Block
- Institut für Anorganische und Analytische ChemieUniversität Münster (WWU)Corrensstraße 3048149MünsterGermany
| | - Rainer Pöttgen
- Institut für Anorganische und Analytische ChemieUniversität Münster (WWU)Corrensstraße 3048149MünsterGermany
| | - Franziska Emmerling
- Division Structure AnalysisFederal Institute for Materials Research and Testing (BAM)Richard-Willstätter-Straße 1112489BerlinGermany
| | - Lena J. Daumann
- Department of ChemistryLudwig-Maximilians-University MunichButenandtstraße 5–1381377MünchenGermany
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21
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Lumpe H, Menke A, Haisch C, Mayer P, Kabelitz A, Yusenko KV, Guilherme Buzanich A, Block T, Pöttgen R, Emmerling F, Daumann LJ. Cover Feature: The Earlier the Better: Structural Analysis and Separation of Lanthanides with Pyrroloquinoline Quinone (Chem. Eur. J. 44/2020). Chemistry 2020. [DOI: 10.1002/chem.202003043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Henning Lumpe
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstraße 5–13 81377 München Germany
| | - Annika Menke
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstraße 5–13 81377 München Germany
| | - Christoph Haisch
- Chair of Analytical Chemistry and Water Chemistry Technical University of Munich Marchioninistraße 17 81377 München Germany
| | - Peter Mayer
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstraße 5–13 81377 München Germany
| | - Anke Kabelitz
- Division Structure Analysis Federal Institute for Materials Research and Testing (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
| | - Kirill V. Yusenko
- Division Structure Analysis Federal Institute for Materials Research and Testing (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
| | - Ana Guilherme Buzanich
- Division Structure Analysis Federal Institute for Materials Research and Testing (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
| | - Theresa Block
- Institut für Anorganische und Analytische Chemie Universität Münster (WWU) Corrensstraße 30 48149 Münster Germany
| | - Rainer Pöttgen
- Institut für Anorganische und Analytische Chemie Universität Münster (WWU) Corrensstraße 30 48149 Münster Germany
| | - Franziska Emmerling
- Division Structure Analysis Federal Institute for Materials Research and Testing (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
| | - Lena J. Daumann
- Department of Chemistry Ludwig-Maximilians-University Munich Butenandtstraße 5–13 81377 München Germany
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22
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Jahn B, Jonasson NSW, Hu H, Singer H, Pol A, Good NM, den Camp HJMO, Martinez-Gomez NC, Daumann LJ. Understanding the chemistry of the artificial electron acceptors PES, PMS, DCPIP and Wurster's Blue in methanol dehydrogenase assays. J Biol Inorg Chem 2020; 25:199-212. [PMID: 32060650 PMCID: PMC7082304 DOI: 10.1007/s00775-020-01752-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [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: 06/01/2019] [Accepted: 12/17/2019] [Indexed: 11/05/2022]
Abstract
Methanol dehydrogenases (MDH) have recently taken the spotlight with the discovery that a large portion of these enzymes in nature utilize lanthanides in their active sites. The kinetic parameters of these enzymes are determined with a spectrophotometric assay first described by Anthony and Zatman 55 years ago. This artificial assay uses alkylated phenazines, such as phenazine ethosulfate (PES) or phenazine methosulfate (PMS), as primary electron acceptors (EAs) and the electron transfer is further coupled to a dye. However, many groups have reported problems concerning the bleaching of the assay mixture in the absence of MDH and the reproducibility of those assays. Hence, the comparison of kinetic data among MDH enzymes of different species is often cumbersome. Using mass spectrometry, UV-Vis and electron paramagnetic resonance (EPR) spectroscopy, we show that the side reactions of the assay mixture are mainly due to the degradation of assay components. Light-induced demethylation (yielding formaldehyde and phenazine in the case of PMS) or oxidation of PES or PMS as well as a reaction with assay components (ammonia, cyanide) can occur. We suggest here a protocol to avoid these side reactions. Further, we describe a modified synthesis protocol for obtaining the alternative electron acceptor, Wurster's blue (WB), which serves both as EA and dye. The investigation of two lanthanide-dependent methanol dehydrogenases from Methylorubrum extorquens AM1 and Methylacidiphilum fumariolicum SolV with WB, along with handling recommendations, is presented. Lanthanide-dependent methanol dehydrogenases. Understanding the chemistry of artificial electron acceptors and redox dyes can yield more reproducible results.
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Affiliation(s)
- Bérénice Jahn
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Niko S W Jonasson
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Hurina Hu
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Helena Singer
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Arjan Pol
- Department of Microbiology, Institute of Wetland and Water Research, Radboud University, Nijmegen, The Netherlands
| | - Nathan M Good
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
| | - Huub J M Op den Camp
- Department of Microbiology, Institute of Wetland and Water Research, Radboud University, Nijmegen, The Netherlands
| | - N Cecilia Martinez-Gomez
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
| | - Lena J Daumann
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany.
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23
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Schmitz RA, Pol A, Mohammadi SS, Hogendoorn C, van Gelder AH, Jetten MSM, Daumann LJ, Op den Camp HJM. The thermoacidophilic methanotroph Methylacidiphilum fumariolicum SolV oxidizes subatmospheric H 2 with a high-affinity, membrane-associated [NiFe] hydrogenase. ISME J 2020; 14:1223-1232. [PMID: 32042101 PMCID: PMC7174314 DOI: 10.1038/s41396-020-0609-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/28/2020] [Accepted: 01/30/2020] [Indexed: 12/23/2022]
Abstract
The trace amounts (0.53 ppmv) of atmospheric hydrogen gas (H2) can be utilized by microorganisms to persist during dormancy. This process is catalyzed by certain Actinobacteria, Acidobacteria, and Chloroflexi, and is estimated to convert 75 × 1012 g H2 annually, which is half of the total atmospheric H2. This rapid atmospheric H2 turnover is hypothesized to be catalyzed by high-affinity [NiFe] hydrogenases. However, apparent high-affinity H2 oxidation has only been shown in whole cells, rather than for the purified enzyme. Here, we show that the membrane-associated hydrogenase from the thermoacidophilic methanotroph Methylacidiphilum fumariolicum SolV possesses a high apparent affinity (Km(app) = 140 nM) for H2 and that methanotrophs can oxidize subatmospheric H2. Our findings add to the evidence that the group 1h [NiFe] hydrogenase is accountable for atmospheric H2 oxidation and that it therefore could be a strong controlling factor in the global H2 cycle. We show that the isolated enzyme possesses a lower affinity (Km = 300 nM) for H2 than the membrane-associated enzyme. Hence, the membrane association seems essential for a high affinity for H2. The enzyme is extremely thermostable and remains folded up to 95 °C. Strain SolV is the only known organism in which the group 1h [NiFe] hydrogenase is responsible for rapid growth on H2 as sole energy source as well as oxidation of subatmospheric H2. The ability to conserve energy from H2 could increase fitness of verrucomicrobial methanotrophs in geothermal ecosystems with varying CH4 fluxes. We propose that H2 oxidation can enhance growth of methanotrophs in aerated methane-driven ecosystems. Group 1h [NiFe] hydrogenases could therefore contribute to mitigation of global warming, since CH4 is an important and extremely potent greenhouse gas.
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Affiliation(s)
- Rob A Schmitz
- Department of Microbiology, Radboud University, Heyendaalseweg 135, NL-6525 AJ, Nijmegen, The Netherlands
| | - Arjan Pol
- Department of Microbiology, Radboud University, Heyendaalseweg 135, NL-6525 AJ, Nijmegen, The Netherlands
| | - Sepehr S Mohammadi
- Department of Microbiology, Radboud University, Heyendaalseweg 135, NL-6525 AJ, Nijmegen, The Netherlands
| | - Carmen Hogendoorn
- Department of Microbiology, Radboud University, Heyendaalseweg 135, NL-6525 AJ, Nijmegen, The Netherlands
| | - Antonie H van Gelder
- Laboratory of Microbiology, Wageningen University and Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Mike S M Jetten
- Department of Microbiology, Radboud University, Heyendaalseweg 135, NL-6525 AJ, Nijmegen, The Netherlands
| | - Lena J Daumann
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraβe 5-13, D-81377, München, Germany
| | - Huub J M Op den Camp
- Department of Microbiology, Radboud University, Heyendaalseweg 135, NL-6525 AJ, Nijmegen, The Netherlands.
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Jonasson NSW, Daumann LJ. Corrigendum: 5‐Methylcytosine is Oxidized to the Natural Metabolites of TET Enzymes by a Biomimetic Iron(IV)‐Oxo Complex. Chemistry 2019; 25:15004. [DOI: 10.1002/chem.201904427] [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: 11/09/2022]
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25
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Jonasson NSW, Daumann LJ. Cover Feature: 5‐Methylcytosine is Oxidized to the Natural Metabolites of TET Enzymes by a Biomimetic Iron(IV)‐Oxo Complex (Chem. Eur. J. 52/2019). Chemistry 2019. [DOI: 10.1002/chem.201903070] [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: 11/06/2022]
Affiliation(s)
- Niko S. W. Jonasson
- Department ChemieLudwig-Maximilians-University München Butenandtstr. 5-13, Haus D Germany
| | - Lena J. Daumann
- Department ChemieLudwig-Maximilians-University München Butenandtstr. 5-13, Haus D Germany
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26
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Lüling R, Singer H, Popp T, John H, Boekhoff I, Thiermann H, Daumann LJ, Karaghiosoff K, Gudermann T, Steinritz D. Sulfur mustard alkylates steroid hormones and impacts hormone function in vitro. Arch Toxicol 2019; 93:3141-3152. [DOI: 10.1007/s00204-019-02571-x] [Citation(s) in RCA: 7] [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] [Received: 07/22/2019] [Accepted: 09/04/2019] [Indexed: 11/28/2022]
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27
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Affiliation(s)
- Lena J. Daumann
- Department of Chemistry Ludwig-Maximilians-Universität München Butenandtstr. 5–13 81377 Munich Germany
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Affiliation(s)
- Lena J. Daumann
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
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29
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Jonasson NSW, Daumann LJ. 5‐Methylcytosine is Oxidized to the Natural Metabolites of TET Enzymes by a Biomimetic Iron(IV)‐Oxo Complex. Chemistry 2019; 25:12091-12097. [PMID: 31211459 DOI: 10.1002/chem.201902340] [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] [Received: 05/21/2019] [Revised: 06/15/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Niko S. W. Jonasson
- Department ChemieLudwig-Maximilians-University München Butenandtstr. 5-13, Haus D Germany
| | - Lena J. Daumann
- Department ChemieLudwig-Maximilians-University München Butenandtstr. 5-13, Haus D Germany
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30
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Affiliation(s)
- Henning Lumpe
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Lena J. Daumann
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 Munich, Germany
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31
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Versantvoort W, Pol A, Daumann LJ, Larrabee JA, Strayer AH, Jetten MS, van Niftrik L, Reimann J, Op den Camp HJ. Characterization of a novel cytochrome c as the electron acceptor of XoxF-MDH in the thermoacidophilic methanotroph Methylacidiphilum fumariolicum SolV. Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics 2019; 1867:595-603. [DOI: 10.1016/j.bbapap.2019.04.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/28/2019] [Accepted: 04/02/2019] [Indexed: 11/29/2022]
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32
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Kalimuthu P, Daumann LJ, Pol A, Op den Camp HJM, Bernhardt PV. Electrocatalysis of a Europium‐Dependent Bacterial Methanol Dehydrogenase with Its Physiological Electron‐Acceptor Cytochrome
c
GJ
. Chemistry 2019. [DOI: 10.1002/chem.201901461] [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: 11/06/2022]
Affiliation(s)
- Palraj Kalimuthu
- School of Chemistry and Molecular BiosciencesUniversity of Queensland Brisbane 4072 Australia
| | - Lena J. Daumann
- Center for Integrated Protein Science Munich (CIPSM) and Department of ChemistryLudwig-Maximilians-Universität München Butenandtstr. 5–13, Haus D 81377 München Germany
| | - Arjan Pol
- Department of MicrobiologyInstitute of Wetland and Water ResearchRadboud University Nijmegen The Netherlands
| | - Huub J. M. Op den Camp
- Department of MicrobiologyInstitute of Wetland and Water ResearchRadboud University Nijmegen The Netherlands
| | - Paul V. Bernhardt
- School of Chemistry and Molecular BiosciencesUniversity of Queensland Brisbane 4072 Australia
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33
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Kalimuthu P, Daumann LJ, Pol A, Op den Camp HJM, Bernhardt PV. Electrocatalysis of a Europium‐Dependent Bacterial Methanol Dehydrogenase with Its Physiological Electron‐Acceptor Cytochrome
c
GJ. Chemistry 2019; 25:8760-8768. [DOI: 10.1002/chem.201900525] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 03/21/2019] [Indexed: 01/27/2023]
Affiliation(s)
- Palraj Kalimuthu
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane 4072 Australia
| | - Lena J. Daumann
- Center for Integrated Protein Science Munich (CIPSM) and Department of Chemistry Ludwig-Maximilians-Universität München Butenandtstr. 5–13, Haus D 81377 München Germany
| | - Arjan Pol
- Department of Microbiology Institute of Wetland and Water Research Radboud University Nijmegen The Netherlands
| | - Huub J. M. Op den Camp
- Department of Microbiology Institute of Wetland and Water Research Radboud University Nijmegen The Netherlands
| | - Paul V. Bernhardt
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane 4072 Australia
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34
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Lumpe H, Pol A, Op den Camp HJM, Daumann LJ. Impact of the lanthanide contraction on the activity of a lanthanide-dependent methanol dehydrogenase - a kinetic and DFT study. Dalton Trans 2018; 47:10463-10472. [PMID: 30020281 PMCID: PMC6085770 DOI: 10.1039/c8dt01238e] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 06/14/2018] [Indexed: 01/15/2023]
Abstract
Interest in the bioinorganic chemistry of lanthanides is growing rapidly as more and more lanthanide-dependent bacteria are being discovered. Especially the earlier lanthanides have been shown to be preferentially utilized by bacteria that need these Lewis acids as cofactors in their alcohol dehydrogenase enzymes. Here, we investigate the impact of the lanthanide ions lanthanum(iii) to lutetium(iii) (excluding Pm) on the catalytic parameters (vmax, KM, kcat/KM) of a methanol dehydrogenase (MDH) isolated from Methylacidiphilum fumariolicum SolV. Kinetic experiments and DFT calculations were used to discuss why only the earlier lanthanides (La-Gd) promote high MDH activity. Impact of Lewis acidity, coordination number preferences, stability constants and other properties that are a direct result of the lanthanide contraction are discussed in light of the two proposed mechanisms for MDH.
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Affiliation(s)
- Henning Lumpe
- Ludwig-Maximilians-Universität München
, Department Chemie
,
Butenandtstr. 5-13
, 81377 München
, Germany
.
| | - Arjan Pol
- Department of Microbiology
, Institute of Wetland and Water Research
, Radboud University Nijmegen
,
The Netherlands
| | - Huub J. M. Op den Camp
- Department of Microbiology
, Institute of Wetland and Water Research
, Radboud University Nijmegen
,
The Netherlands
| | - Lena J. Daumann
- Ludwig-Maximilians-Universität München
, Department Chemie
,
Butenandtstr. 5-13
, 81377 München
, Germany
.
- Center for Integrated Protein Science Munich (CIPSM) at the Department of Chemistry
, Ludwig-Maximilians-Universität München
,
Germany
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35
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Jahn B, Pol A, Lumpe H, Barends TRM, Dietl A, Hogendoorn C, Op den Camp HJM, Daumann LJ. Front Cover: Similar but Not the Same: First Kinetic and Structural Analyses of a Methanol Dehydrogenase Containing a Europium Ion in the Active Site (ChemBioChem 11/2018). Chembiochem 2018. [DOI: 10.1002/cbic.201800221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bérénice Jahn
- Ludwig-Maximilians-Universität München; Department Chemie; Butenandtstr. 5-13 81377 München Germany
| | - Arjan Pol
- Department of Microbiology, Institute of Wetland and Water Research; Radboud University; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Henning Lumpe
- Ludwig-Maximilians-Universität München; Department Chemie; Butenandtstr. 5-13 81377 München Germany
| | - Thomas R. M. Barends
- Department of Biomolecular Mechanisms; Max-Planck Institute for Medical Research; Jahnstrasse 29 69120 Heidelberg Germany
| | - Andreas Dietl
- Department of Biomolecular Mechanisms; Max-Planck Institute for Medical Research; Jahnstrasse 29 69120 Heidelberg Germany
| | - Carmen Hogendoorn
- Department of Microbiology, Institute of Wetland and Water Research; Radboud University; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Huub J. M. Op den Camp
- Department of Microbiology, Institute of Wetland and Water Research; Radboud University; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Lena J. Daumann
- Ludwig-Maximilians-Universität München; Department Chemie; Butenandtstr. 5-13 81377 München Germany
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36
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Comba P, Daumann LJ, Klingeler R, Koo C, Riley MJ, Roberts AE, Wadepohl H, Werner J. Correlation of Structural and Magnetic Properties in a Set of Mononuclear Lanthanide Complexes. Chemistry 2018; 24:5319-5330. [PMID: 29405448 DOI: 10.1002/chem.201704822] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 10/12/2017] [Indexed: 11/06/2022]
Abstract
The electronic and magnetic properties of a set of mononuclear terbium(III) and dysprosium(III) complexes with two tetradentate 1-hydroxy-pyridin-2-one (1,2-HOPO) ligands are reported. Two primary coordination geometries are observed, depending on the length of the linker between the 1,2-HOPO donor moieties and the resulting arrangements of the linker. Fine details of the magnetic circular dichroism (MCD) spectra of the dysprosium(III) complexes illustrate differences in the splitting of the J multiplets and allow for a thorough ligand field analysis. High frequency electron paramagnetic resonance (HF-EPR) studies of the terbium(III) complexes give insight into the composition of the ground states. Ab initio calculations are utilized to rationalize the experimental results and further illustrate the effect of the structural features on the electronic and magnetic properties of the different complexes.
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Affiliation(s)
- Peter Comba
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, 69120, Heidelberg, Germany.,Interdisziplinäres Zentrum für Wissenschaftliches Rechnen (IWR), INF 205, 69120, Heidelberg, Germany
| | - Lena J Daumann
- Fakultät für Chemie und Pharmazie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Rüdiger Klingeler
- Kirchhoff-Institut für Physik, Universität Heidelberg, INF 227, 69120, Heidelberg, Germany.,Centre for Advanced Materials (CAM), Universität Heidelberg, INF 225, 69120, Heidelberg, Germany
| | - Changhyun Koo
- Kirchhoff-Institut für Physik, Universität Heidelberg, INF 227, 69120, Heidelberg, Germany
| | - Mark J Riley
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Asha E Roberts
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, 69120, Heidelberg, Germany.,Interdisziplinäres Zentrum für Wissenschaftliches Rechnen (IWR), INF 205, 69120, Heidelberg, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, 69120, Heidelberg, Germany
| | - Johannes Werner
- Kirchhoff-Institut für Physik, Universität Heidelberg, INF 227, 69120, Heidelberg, Germany
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37
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Jahn B, Pol A, Lumpe H, Barends TRM, Dietl A, Hogendoorn C, Op den Camp HJM, Daumann LJ. Similar but Not the Same: First Kinetic and Structural Analyses of a Methanol Dehydrogenase Containing a Europium Ion in the Active Site. Chembiochem 2018; 19:1147-1153. [PMID: 29524328 PMCID: PMC6100108 DOI: 10.1002/cbic.201800130] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [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: 03/09/2018] [Indexed: 01/23/2023]
Abstract
Since the discovery of the biological relevance of rare earth elements (REEs) for numerous different bacteria, questions concerning the advantages of REEs in the active sites of methanol dehydrogenases (MDHs) over calcium(II) and of why bacteria prefer light REEs have been a subject of debate. Here we report the cultivation and purification of the strictly REE-dependent methanotrophic bacterium Methylacidiphilum fumariolicum SolV with europium(III), as well as structural and kinetic analyses of the first methanol dehydrogenase incorporating Eu in the active site. Crystal structure determination of the Eu-MDH demonstrated that overall no major structural changes were induced by conversion to this REE. Circular dichroism (CD) measurements were used to determine optimal conditions for kinetic assays, whereas inductively coupled plasma mass spectrometry (ICP-MS) showed 70 % incorporation of Eu in the enzyme. Our studies explain why bacterial growth of SolV in the presence of Eu3+ is significantly slower than in the presence of La3+ /Ce3+ /Pr3+ : Eu-MDH possesses a decreased catalytic efficiency. Although REEs have similar properties, the differences in ionic radii and coordination numbers across the series significantly impact MDH efficiency.
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Affiliation(s)
- Bérénice Jahn
- Ludwig-Maximilians-Universität MünchenDepartment ChemieButenandtstr. 5–1381377MünchenGermany
| | - Arjan Pol
- Department of Microbiology, Institute of Wetland and Water ResearchRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Henning Lumpe
- Ludwig-Maximilians-Universität MünchenDepartment ChemieButenandtstr. 5–1381377MünchenGermany
| | - Thomas R. M. Barends
- Department of Biomolecular MechanismsMax-Planck Institute for Medical ResearchJahnstrasse 2969120HeidelbergGermany
| | - Andreas Dietl
- Department of Biomolecular MechanismsMax-Planck Institute for Medical ResearchJahnstrasse 2969120HeidelbergGermany
| | - Carmen Hogendoorn
- Department of Microbiology, Institute of Wetland and Water ResearchRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Huub J. M. Op den Camp
- Department of Microbiology, Institute of Wetland and Water ResearchRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Lena J. Daumann
- Ludwig-Maximilians-Universität MünchenDepartment ChemieButenandtstr. 5–1381377MünchenGermany
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38
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Daumann LJ, Werther P, Ziegler MJ, Raymond KN. Siderophore inspired tetra- and octadentate antenna ligands for luminescent Eu(III) and Tb(III) complexes. J Inorg Biochem 2016; 162:263-273. [DOI: 10.1016/j.jinorgbio.2016.01.006] [Citation(s) in RCA: 11] [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] [Received: 10/01/2015] [Revised: 01/05/2016] [Accepted: 01/07/2016] [Indexed: 01/09/2023]
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Daumann LJ, Tatum DS, Andolina CM, Pacold JI, D’Aléo A, Law GL, Xu J, Raymond KN. Effects of Ligand Geometry on the Photophysical Properties of Photoluminescent Eu(III) and Sm(III) 1-Hydroxypyridin-2-one Complexes in Aqueous Solution. Inorg Chem 2015; 55:114-24. [DOI: 10.1021/acs.inorgchem.5b01927] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lena J. Daumann
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - David S. Tatum
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Christopher M. Andolina
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Joseph I. Pacold
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Anthony D’Aléo
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Ga-lai Law
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Jide Xu
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Kenneth N. Raymond
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
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Abstract
![]()
The synthesis of
a series of octadentate ligands containing the 1-hydroxypyridin-2-one
(1,2-HOPO) group in complex with europium(III) is reported. Within
this series, the central bridge connecting two diethylenetriamine
units linked to two 1,2-HOPO chromophores at the extremities (5-LIN-1,2-HOPO)
is varied from a short ethylene chain (H(2,2)-1,2-HOPO) to a long
pentaethylene oxide chain (H(17O5,2)-1,2-HOPO). The thermodynamic
stability of the europium complexes has been studied and reveals these
complexes may be effective for biological measurements. Extension
of the central bridge results in exclusion of the inner-sphere water
molecule observed for [Eu(H(2,2)-1,2-HOPO)]− going
from a nonacoordinated to an octacoordinated Eu(III) ion. With the
longer chain length ligands, the complexes display increased luminescence
properties in aqueous medium with an optimum of 20% luminescence quantum
yield for the [Eu(H(17O5,2)-1,2-HOPO)]− complex.
The luminescence properties for [Eu(H(14O4,2)-1,2-HOPO)]− and [Eu(H(17O5,2)-1,2-HOPO)]− are better than
that of the model bis-tetradentate [Eu(5LINMe-1,2-HOPO)2]− complex, suggesting a different geometry
around the metal center despite the geometric freedom allowed by the
longer central chain in the H(mOn,2) scaffold. These differences are also evidenced by examining the
luminescence spectra at room temperature and at 77 K and by calculating
the luminescence kinetic parameters of the europium complexes. The tetradentate 5LINMe-1,2-HOPO ligand is a
proven sensitizer for Eu(III) emission. Herein, we report the synthesis,
stability, and photophysical characterization for a series of octadentate
ligands prepared by linking these subunits together with various aliphatic
or oligoethylene glycol chains to form Eu(III) complexes with fully
optimized emission in aqueous solution, in terms of their overall
quantum yield and brightness, for potential applications in biological
luminescence.
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Affiliation(s)
- Anthony D'Aléo
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Evan G Moore
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jide Xu
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Lena J Daumann
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Kenneth N Raymond
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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41
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Daumann LJ, Tatum DS, Snyder BER, Ni C, Law GL, Solomon EI, Raymond KN. New insights into structure and luminescence of Eu(III) and Sm(III) complexes of the 3,4,3-LI(1,2-HOPO) ligand. J Am Chem Soc 2015; 137:2816-9. [PMID: 25607882 PMCID: PMC4433002 DOI: 10.1021/ja5116524] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [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: 01/26/2023]
Abstract
We report the preparation and new insight into photophysical properties of luminescent hydroxypyridonate complexes [M(III)L](-) (M = Eu or Sm) of the versatile 3,4,3-LI(1,2-HOPO) ligand (L). We report the crystal structure of this ligand with Eu(III) as well as insights into the coordination behavior and geometry in solution by using magnetic circular dichroism. In addition TD-DFT calculations were used to examine the excited states of the two different chromophores present in the 3,4,3-LI(1,2-HOPO) ligand. We find that the Eu(III) and Sm(III) complexes of this ligand undergo a transformation after in situ preparation to yield complexes with higher quantum yield (QY) over time. It is proposed that the lower QY in the in situ complexes is not only due to water quenching but could also be due to a lower degree of f-orbital overlap (in a kinetic isomer) as indicated by magnetic circular dichroism measurements.
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Affiliation(s)
- Lena J Daumann
- Chemical Science Division, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California , Berkeley, California 94720, United States
| | | | | | | | | | | | | |
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43
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Daumann LJ, Schenk G, Gahan LR. Metallo‐β‐lactamases and Their Biomimetic Complexes (Eur. J. Inorg. Chem. 18/2014). Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201490086] [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: 11/10/2022]
Affiliation(s)
- Lena J. Daumann
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
- Department of Chemistry, University of California, Berkeley, CA 94720‐1460, USA
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Lawrence R. Gahan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| |
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44
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Daumann LJ, Schenk G, Gahan LR. Metallo‐β‐lactamases and Their Biomimetic Complexes. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402474] [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: 11/07/2022]
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45
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Daumann LJ, Schenk G, Ollis DL, Gahan LR. Spectroscopic and mechanistic studies of dinuclear metallohydrolases and their biomimetic complexes. Dalton Trans 2013; 43:910-28. [PMID: 24135968 DOI: 10.1039/c3dt52287c] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enhanced understanding of the metal ion binding and active site structural features of phosphoesterases such as the glycerophosphodiesterase from Enterobacter aerogenes (GpdQ), and the organophosphate degrading agent from Agrobacterium radiobacter (OpdA) have important consequences for potential applications. Coupled with investigations of the metalloenzymes, programs of study to synthesise and characterise model complexes based on these metalloenzymes can add to our understanding of structure and function of the enzymes themselves. This review summarises some of our work and illustrates the significance and contributions of model studies to knowledge in the area.
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Affiliation(s)
- Lena J Daumann
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia.
| | | | | | | |
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46
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Daumann LJ, Larrabee JA, Ollis D, Schenk G, Gahan LR. Immobilization of the enzyme GpdQ on magnetite nanoparticles for organophosphate pesticide bioremediation. J Inorg Biochem 2013; 131:1-7. [PMID: 24239906 DOI: 10.1016/j.jinorgbio.2013.10.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 10/08/2013] [Accepted: 10/08/2013] [Indexed: 01/26/2023]
Abstract
Annually thousands of people die or suffer from organophosphate (pesticide) poisoning. In order to remove these toxic compounds from the environment, the use of enzymes as bioremediators has been proposed. We report here a Ser127Ala mutant based on the enzyme glycerophosphodiesterase (GpdQ) from Enterobacter aerogenes. The mutant, with improved metal binding abilities, has been immobilized using glutaraldehyde on PAMAM dendrimer-modified magnetite nanoparticles. The immobilized system was characterized using elemental analysis as well as infrared, transmission electron and X-ray photoelectron spectroscopies. The amount of GpdQ that was immobilized with the optimized procedure was 1.488 nmol per g MNP. A kinetic assay has been designed to evaluate the activity of the system towards organophosphoester substrates. The specific activity towards BPNPP directly after immobilization was 3.55 μmol mg(-1)min(-1), after one week 3.39 μmol mg(-1)min(-1) and after 120 days 3.36 μmol mg(-1)min(-1), demonstrating that the immobilized enzyme was active for multiple cycles and could be stored on the nanoparticles for a prolonged period.
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Affiliation(s)
- Lena J Daumann
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane QLD 4072, Australia
| | - James A Larrabee
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury VT 05753, USA
| | - David Ollis
- Research School of Chemistry, Australian National University, Canberra 0200, Australia
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane QLD 4072, Australia
| | - Lawrence R Gahan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane QLD 4072, Australia.
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Dalle KE, Daumann LJ, Schenk G, McGeary RP, Hanton LR, Gahan LR. Ligand modifications modulate the mechanism of binuclear phosphatase biomimetics. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [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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Daumann LJ, Comba P, Larrabee JA, Schenk G, Stranger R, Cavigliasso G, Gahan LR. Synthesis, Magnetic Properties, and Phosphoesterase Activity of Dinuclear Cobalt(II) Complexes. Inorg Chem 2013; 52:2029-43. [DOI: 10.1021/ic302418x] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Lena J. Daumann
- School of
Chemistry and Molecular Biosciences, The University of Queensland, Brisbane QLD 4072, Australia
| | - Peter Comba
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld
270, 69120 Heidelberg, Germany
| | - James A. Larrabee
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Gerhard Schenk
- School of
Chemistry and Molecular Biosciences, The University of Queensland, Brisbane QLD 4072, Australia
- Department of Chemistry, National University of Ireland—Maynooth, Maynooth,
Co. Kildare, Ireland
| | - Robert Stranger
- Research School of Chemistry, Australian National University, Canberra 0200, Australia
| | - German Cavigliasso
- Research School of Chemistry, Australian National University, Canberra 0200, Australia
| | - Lawrence R. Gahan
- School of
Chemistry and Molecular Biosciences, The University of Queensland, Brisbane QLD 4072, Australia
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Daumann LJ, Marty L, Schenk G, Gahan LR. Asymmetric zinc(ii) complexes as functional and structural models for phosphoesterases. Dalton Trans 2013; 42:9574-84. [DOI: 10.1039/c3dt50514f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [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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