James A. Birrell Gunhild Layer Gary Sawers Basem Soboh
Joseph J. Braymer Silke Leimkühler Michael Schroda Ingrid Span
Holger Dobbek Roland Lill Volker Schünemann Sven Stripp
Oliver Einsle Ralf R. Mendel Carola Schulzke Matthias Ullmann
Thorsten Friedrich Franc Meyer Günter Schwarz Tristan Wagner
Thomas Happe Antonio J. Pierik Seigo Shima
Günter Fritz /
Julia Fritz-Steuber
Serena DeBeer /
Frank Neese
Oliver Lenz /
Ingo Zebger


Name Expertise Methodology provided
Birrell, James A. Functional and spectroscopic studies of metalloproteins (including hydrogenases, CO dehydrogenases, formate dehydrogenases and methane monooxygenases). Protein production  (homologously/ heterologously) purification (membrane proteins/oxygen sensitive proteins), molecular biology, anaerobic sample manipulation. Protein film electrochemistry (PFV). Infrared spectroscopy (including variable temperature and spectroelectochemistry), electron paramagnetic resonance (EPR) spectroscopy (including using multifrequency and pulsed methods), Mossbauer and nuclear resonance vibrational spectroscopy (NRVS), kinetic assays and data modelling. -Anaerobic protein production and purification for oxygen sensitive metalloproteins.

-Electrochemistry of iron-sulfur clusters and metalloenzymes.

-Infrared (including spectroelectrochemistry and variable temperature)

-Electron paramagnetic resonance (EPR) spectroscopy (including X, Q, W-band, pulsed, ENDOR, ESEEM, HYSCORE etc.)

-Mossbauer spectroscopy (variable temperature, variable field)

-Nuclear resonance vibrational spectroscopy (NRVS)

Braymer, Joseph J. Metal ion homeostasis in bacteria and eukaryotes, purification of metal-binding proteins aerobically and anaerobically, iron-sulfur cluster biogenesis, metal cofactor trafficking reactions, the use of yeast as a model organism for understanding iron homeostasis and the interplay between iron-sulfur protein biogenesis and thiol redox balance. -Aerobic and anaerobic recombinant protein expression in coli

-Experiments in yeast and yeast genetics (enzyme assays, generation and phenotype analysis of yeast mutant strains, iron regulation, iron uptake and incorporation, immunoprecipitation and in vivo protein-protein interactions, protein labeling strategies)

-Protein purification and characterization within the core facility of protein biochemistry and spectroscopy at the Institute for Cytobiology (anaerobic chambers; multiple Äkta purification systems; UV/Vis, CD, and fluorescence spectroscopy; in vitro protein-protein interactions)

DeBeer, Serena The development and application of X-ray spectroscopic methods to understand fundamental processes of biological nitrogen reduction, methane to methanol conversion, hydrogen production and water oxidation. – X-ray absorption spectroscopy (XAS)
– Extended X-ray absorption fine structure (EXAFS)
– X-ray emission spectroscopy (XES)
– Two-dimensional X-ray spectroscopic methods for enhanced selectivity.
Dobbek, Holger Enzymology of the reductive acetyl-CoA pathway, nickel and iron-containing enzymes and their maturation, carbon monoxide dehydrogenases, structure and function of molybdo-enzymes – production of metalloenzymes with complex metal sites
– production and handling of O2-sensitive iron/sulfur-cluster containing enzymes
– crystallization and structure determination of O2-sensitive enzymes
– stopped-flow (UV/fluorescence) spectroscopy, quenched flow-kinetics under aerobic and strictly anoxic conditions ([O2] < 0.5 ppm)
– isothermal titration calorimetry under strictly anoxic conditions ([O2] < 0.5 ppm)
– kinetic monitoring of conformational changes (stopped-flow FRET kinetics)
Einsle, Oliver Structural and functional analysis of metalloproteins and membrane proteins, bioinorganic chemistry, enzymology of the biogeochemical cycles of nitrogen and sulfur, biological nitrogen fixation, nitrous oxide reductase, multiheme cytochromes c, maturation and assembly of metal centers  – isolation of metalloproteins from     native and recombinant sources
– anoxic protein biochemistry
– crystallization and structure solution by X-ray diffraction under excluion of O2
– fast kinetics (stopped-flow) with UV/vis and fluorescence detection

– isothermal titration calorimetry
– UV/vis spectroscopy in microvolumes and on single crystals
– EPR spectroscopy (cw, X- and Q-band)
-Analytical size-exclusion chromatography with UV/vis, refractory index and right-angle light scattering
thermofluor protein stability assays 
Friedrich, Thorsten Enzyme complexes of respiratory chains, kinetic and functional characterization of enzyme complexes of respiratory chains, characterization of electron transfer reactions involving several cofactors, genetic manipulation of enzyme complexes, modeling of human pathogenic mutations in bacteria, ESR-spectroscopy of FeS clusters, FeS cluster biosynthesis, molecular chaperones assisting FeS cluster and heme biosynthesis, regulation of catalytic activity by FeS clusters The Friedrich lab will provide long-standing expertise on the recombinant production and functional characterization of membraneous metalloproteins and proteins involved in the biosynthesis of FeS clusters. This includes cloning, and manipulation of genes involved as well as heterologous production, and purification of the enzyme complexes and putative chaperones in E. coli. The analytical methods include enzyme kinetics (e.g. ESR-spectroscopy, stopped flow, UV-Vis spectrometry, fluorescence, diode array and dual-beam techniques), protein stability analysis by thermoFAD, protein electrochemistry, functional protein-protein interaction (isothermal titration calorimetry, split-GFP, cross-linking coupled to mass spectrometry, native PAGE) and cellular localization of proteins (FP-fusion proteins). 
Fritz, Günter FeS, heme, flavin, Calcium, Zinc containing proteins and enzymes; X-ray crystallography of proteins and complexes and analysis at low resolution; protein-protein interaction; spectroscopic analysis including e.g. CD, MCD, SAXS. – Recombinant expression of multi protein complexes in coli or insect cells.
– Isolation of proteins under exclusion of oxygen.
– Determination of redox potential of redox cofactors
– Crystallization and X-ray analysis of proteins
Fritz-Steuber, Julia We use the Na+-translocating NADH:quinone oxidoreductase from Vibrio cholerae as a model to apply and develop techniques for functional characterization of large membrane protein complexes in native membranes, or with purified complexes in detergent-solubilized state and after reconstitution in liposomes. Devices and techniques for bacterial cell growth, bacterial mutagenesis, cell rupture and membrane protein purification in S1 laboratories. In addition, we offer access to laboratories with biological safety level 2 for growth, storage, manipulation and lysis of bacteria classified as S2. The S2 laboratories are fully equipped with an autoclave, several incubators and shakers, a safety cabinet for biological cultures, centrifuges, an Emulsiflex system for cell lysis, a spectrophotometer, freezer and a fridge for storage of bacterial strains.
Happe, Thomas Structural and biochemical characterization of redox proteins and electron transfer reactions, regulation of the maturation process of hydrogenases, cofactor synthesis and enzyme engineering, crystallization of O2-sensitive proteins, metabolic engineering of algae and isolation of algal products, development of semisynthetic catalysts. -expression and purification of O2-sensitive proteins

-high throughput screening under anaerobic conditions

-ATR-FTIR spectroscopy

-protein film electrochemistry

-crystallization of O2-sensitive enzymes

-all scientific methods for working with green algae

Layer, Gunhild Enzymes involved in tetrapyrrole biosynthesis, iron-sulfur cluster containing enzymes, Radical SAM enzymes, iron-sulfur cluster biosynthesis in prokaryotes, protein biochemistry and enzymology. Our lab is well equipped for all kinds of work in the fields of protein biochemistry, molecular biology and microbiology. This includes protein production and purification under aerobic and anaerobic conditions, cloning and heterologous gene expression. Enzyme kinetics are measured using UV-Visible absorption spectroscopy and HPLC analysis. We have a long-standing expertise in the anaerobic handling and crystallization of oxygen-labile iron-sulfur cluster proteins.
Leimkühler, Silke Molybdenum enzymes and molybdenum cofactor biosynthesis, kinetic and functional characterization of metalloenzymes, mechanism of Moco-assembly and insertion into apo-enzymes by molecular chaperones, cross-talk of molybdenum cofactor biosynthesis and iron sulfur clusters in the cell, analysis of the regulation of synthesis of molybdoenzymes, detection of sulfur-containing molecules and cofactors (Moco, thionucleosides in tRNA, thimin, FeS containg enzymes). The Leimkühler lab will provide long-standing expertise on the recombinant production and functional characterization of molybdoenzymes and proteins involved in the biosynthesis of the molybdenum cofactor. This includes cloning, heterologous overexpression, and purification of genes/functional enzymes from various organisms, including humans, SF9 cells and E. coli. The repertoire further includes detailed enzyme kinetics (e.g. stopped flow, UV-Vis spectrometry, anaerobic assays), protein stability analysis by thermofluor. The lab is well equiped for functional protein-protein interaction studies (Biacore,isothernal titration calorimetry, Biolayer interferometry, thermophorese), and metal detection (ICP-OES). Subcellular localization of proteins (transfection, GFP-fusion proteins) and splitGFP as molecular probe for the intracellular interaction of proteins have been established. Additional genetic methods involve RT-PCR and gene expression analysis.
Lenz, Oliver The group of Oliver Lenz is well-experienced in the molecular genetics, biochemistry and biotechnological application of hydrogenases that oxidize and produce molecular hydrogen in the presence of dioxygen. The activities of the group are embedded in the multidisciplinary environment of the Cluster of Excellence “Unifying Concepts in Catalysis” headed by the TU Berlin. Recently, the molecular basis for the striking oxygen-tolerance of the membrane-bound [NiFe] hydrogenase from the β-proteobacterium Ralstonia eutropha has been elucidated in a joint effort involving molecular and structural biology, spectroscopy, electrochemistry and theory. The novel insights into the factors/genes involved in cofactor assembly and catalytic mechanism of this functional O2-tolerant hydrogenase provide the basis of the current project.  Microbiology, molecular biology, protein biochemistry, and genetic engineering. Gas handling for fermentation with explosive H2/O2 mixtures. Mutagenesis, homologous and heterologous protein-overproduction and purification (FPLC). UV-Vis spectrometry. Gas quantification by amperometry (inverted Clark electrode), gas chromatography and mass spectrometry

Lill, Roland

The Lill group uses the yeast Saccharomyces cerevisiae and human cell culture as main experimental systems. In some cases the group has worked on human patient material. The general expertise is in yeast molecular genetics and cell biology, protein biochemistry, metal biology and metal protein analysis, protein spectroscopy, protein crystallization, proteomic and genomic analysis of physiological changes after alterations in Fe/S protein or iron metabolism, metabolite transport into and out of mitochondria, cell culture analyses and RNAi technology.

Yeast molecular genetics, human cell culture, RNAi technology, cell biological and biochemical analysis of Fe/S protein biogenesis (anaerobic reconstitution) and iron metabolism, protein biochemistry and spectroscopy (UV/Vis, EPR, CD, fluorescence), protein interaction studies (thermophoresis, plasmon resonance, immunoprecipitation, NMR, BLI-Octed), metal detection (ICP-MS), molecular biology (site-directed mutagenesis and protein expression-purification in yeast and E. coli), 3D structural analysis of proteins, proteomic and genomic analyses, metabolite transport into and out of mitochondria.


Mendel, Ralf

Molybdenum enzymes and molybdenum cofactor biosynthesis, kinetic and functional characterization of metalloenzymes, mechanism of Moco-assembly and insertion into apo-enzymes, cross-talk of molybdenum cofactor biosynthesis and iron sulfur clusters in the cell, analysis of the regulation of synthesis of molybdoenzymes, detection of protein-protein interactions in vivo.

The Mendel lab will provide long-standing expertise on the recombinant production and functional characterization of molybdoenzymes and proteins involved in the biosynthesis of the molybdenum cofactor. This includes cloning, heterologous overexpression, and purification of genes/functional enzymes from various organisms, including humans, yeast, Neurospora crassa and E. coli. The lab is well equipped for functional protein-protein interaction studies (Biacore, ITC, thermophorese), and metal detection (ICP-MS). Subcellular localization of proteins (transfection, GFP-fusion proteins) and splitGFP / splitLuciferase as molecular probe for the intracellular interaction of proteins have been established. Additional genetic methods involve RT-PCR, gene expression analysis and generation of knockouts in N. crassa.


Meyer, Franc

Synthetic (bio)inorganic and organometallic chemistry, specifically biomimetic coordination chemistry and bioinspired catalysis; small molecule activation and characterization of active intermediates; magnetochemistry; synthesis and spectroscopy under anaerobic conditions. Organic and inorganic synthesis of model complexes; analysis and spectroscopy of small molecules including IR, Raman, UV-vis, EPR (X-band) and multinuclear NMR spectroscopies (all at variable temperatures); zero-field 57Fe Mössbauer spectroscopy; SQUID magnetometry; mass spectrometry (various ionization methods); electrochemistry; single crystal X-ray diffractometry.


Neese, Frank

Development and application of quantum chemical methods for understanding fundamental processes in biological catalysis. Experimental molecular spectroscopyand the theoretical interpretation of spectra.

– Electronic structure calculations
– Spectral calculations
– X-ray magnetic circular dichroism (XMCD)

Antonio J.

Iron sulfur proteins, iron sulfur protein biosynthesis, bioinformatic analysis, yeast genetics, in vivo interaction studies, enzyme kinetics, synthesis and application of isotopically labelled compounds, microbial biochemical pathways, anaerobic methods, redox chemistry, radical enzymes, application of spectroscopic methods for the functional and quantitative analysis of (multi-cofactor containing) metalloproteins: (parallel-mode) EPR, FTIR, NMR, UV-Vis, fluorescence and Mössbauer spectroscopies, elemental analysis (AAS, ICP-MS, PIXE, INAA).

The Pierik laboratory has facilities and experience to produce and handle proteins under anaerobic conditions. For protein production in E. coli and genetic studies of yeast large scale variable temperature shakers and a French Press are available. For functional analysis an anaerobic tent, a wide range of UV-Vis and fluorescence spectrometers and a pulsed X-band EPR spectrometer with various cavities and helium transfer lines are present. Equally important is the local networking of the Pierik lab with other groups in the chemistry and directly adjacent biology and physics departments at the campus of the Technical University Kaiserslautern. This allows on site access to Resonance Raman, (high field) Mössbauer (Diller, Schünemann), FTIR (Gerhards) and CD spectroscopy (Keller).

Sawers, Gary

Biochemistry and physiology of molybdenum-selenium enzymes and nickel-iron hydrogenases; characterization of biosynthesis of metalloenzymes; mechanism of NiFe-cofactor assembly and insertion into apo-hydrogenase by molecular chaperones; biosynthesis of iron sulfur clusters and insertion into electron-transport proteins.

Our lab has expertise in anaerobic protein biochemistry, microbial physiology, molecular biology and molecular genetics of metalloenzyme biosynthesis and function. These techniques include cloning, heterologous protein-overproduction, anaerobic purification of oxygen-sensitive enzymes and cofactors using mainly E. coli as host. We also have extensive expertise in the analysis of membrane proteins and protein-protein interaction. The lab equipped for functional anaerobic protein purification (anaerobic glove box with protein-purification facility), the study of protein-protein interaction (e.g. ITC) and we have access to metal analysis (ICP-MS – group of Dietrich Nies). The lab also has considerable expertise in all aspects of molecular biology and analysis of gene expression. We also have an excellent collaboration with the group of Andrea Sinz in Halle who is a world-leader in mass spectrometry.

Schulzke, Carola

Inorganic (i.e. complex) and organic synthesis; in particular: molybdenum,
tungsten and vanadium complex synthesis, synthesis of ligands and ligand precursors mimicking aspects of molybdopterin, non-innocent ligands; synthesis and characterization under inert gas conditions; crystallography; NMR-spectroscopy (1H, 13C, 31P, 51V); electrochemistry; optical spectroscopy (UV-vis, IR); oxo-transfer catalysis; model complex kinetics
The Schulzke lab is ready to provide long-standing expertise in the field of bioinorganic synthetic chemistry including the development of active site mimics as well as the design of models for natural ligand systems as for instance molybdopterin. The focus (and expertise) lies on the metals molybdenum, tungsten and vanadium but synthetic work also frequently involves for instance nickel and zinc complexes. The preparation of bioinorganic model compounds may be needed by other participants of the SPP for the comparison with enzymes and interpretation of enzymatic spectroscopic data (in particular EXAFS data).

Further expertise and readily available methods include small molecule crystallography (as opposed to protein crystallography), electrochemistry, NMR-spectroscopy (1H, 13C, 31P, 51V; other nuclei are possible), catalysis and kinetics of biomimetic processes and optical spectroscopy (UV-vis and IR). All methods can be provided under inert gas conditions (either sample preparation or execution of the whole experiments can be done for instance in a glove box with no water and no oxygen {< 0.1 ppm} present in the atmosphere).

Schroda, Michael

Chloroplast proteostasis, molecular chaperones and proteases, heat shock response, biogenesis of thylakoid membranes, Chlamydomonas gene expression, algal biotechnology and synthetic biology, quantitative mass spectrometry for the analysis of differential protein expression and protein-protein interactions. Chlamydomonas synthetic biology, mass spectrometry-based proteomics, analysis of protein-protein interactions by AP-MS and proximity labeling, analysis of protein complexes by complexome profiling.
Schünemann, Volker Molecular biophysics; electronic and dynamical properties of iron centers in proteins and corresponding chemical models; reaction intermediates; spin crossover complexes; nanostructures of spincrossover complexes; iron containing nanoparticles; heterogeneous catalysis.

Field and temperature dependent Mössbauer Spectroscopy;  synchrotron techniques based on the Mössbauer effect: Nuclear Forward and Nuclear Inelastic scattering, Application of density functional theory (DFT); electron paramagnetic resonance (EPR) spectroscopy; Infrared and Raman-spectroscopy; Freeze-Quench techniques for the study of reaction intermediates by Mössbauer and EPR spectroscopy.

Schwarz, Günter

In the field of molybdenum cofactor and molybdenum enzymes we study the biosynthesis of the molybdenum cofactor in humans. We express proteins in E. coli or animal cells and characterize their function in vitro and in vivo. We investigate their cellular distribution and subcellular targeting mechanisms. We generated an animal model for molybdenum cofactor deficiency, developed a therapy and currently study the molecular mechanism of the disease using cellular and animal models. We are interested in the structure-function relation in animal sulfite oxidase. We apply steady-state and pre-steady-state kinetics to investigate different activities in sulfite oxidase including nitrite reduction and NO synthesis. In plants, we investigate the structure and function of nitrate reductase including their posttranslational regulation by phosphorylation and 14-3-3 protein binding. In another research area we study the formation of inhibitory synapses in the central nervous system. We apply cellular and biochemical tools to understand the underlying mechanism leading to the formation of postsynaptic scaffold, their stability and plasticity.

Molecular biology, biochemistry and cell biology; recombinant expression, purification and characterization of proteins using E. coli, Pichia pastoris, insect cells, and human cells as host system; biochemical and biophysical characterization of proteins (CD spectroscopy, dynamic light scattering, differential scanning calorimetry), protein interaction studies in vitro (cosedimentation, isothermal titratrion calorimetry, surface plamon resonance spectroscopy) and in vivo (expression in animal cells including in culture neurons); protein crystallography and structural biology; enzymology (steady state and pre-steady state); studies in mice (animal facility, animal models and in collaboration AAV-mediate gene therapy); neurobiology (culture of hippocampal and cortical neurons, cell viability studies, synaptogenesis); targeting and function of mitochondrial proteins.

Shima, Seigo Cultivation of methanogenic archaea. Purification and characterization of enzymes involved in methanogenesis and anaerobic oxidation of methane including [Fe]-hydrogenase, F420-reducing [NiFe]-hydrogenase and methyl-coenzyme M reductase. Crystallization of the metaloproteins. We solved many crystal structures of the proteins in collaboration with U. Ermler (MPI of Biophysics). Analysis of the [Fe]-hydrogenase cofactor (the FeGP cofactor) biosynthesis by using stable-isotope labeling. Chemical and spectroscopic analyses of the FeGP cofactor and its biosynthetic precursors. Molecular cloning of genes and heterologous expression in Escherichia coli. We elucidated structure of the FeGP cofactor and the related compounds with NMR, ESI-MS, MALDI-TOF-MS), circular dichroism spectroscopy, Mössbauer spectroscopy, X-ray absorption spectroscopy in collabolations. Gene knock out of M. maripaludis in collaboration with Michael Rother (Technisch Universität Dresden).

The Shima lab has long-standing expertise on the anaerobic purification and characterization of oxygen-sensitive enzymes. The enzymes can be anaerobically crystallized in anaerobic conditions. We are familiar with recombinant production and functional characterization of proteins. This includes gene cloning, heterologous overexpression of the genes in Escherichia coli and purification of proteins.

Soboh, Basem

In vitro biosynthesis and assembly of complex Fe-S cofactors of [NiFe]-hydrogenase and FeMo-Nitrogenase. Isolation of active maturation machinery and follow the stepwise synthesis and assembly of cofactor biochemically and spectroscopically. Cloning, overexpression, anaerobic purification and analysis of the compositions of functional complexes and membrane proteins. Protein refolding and reconstitution of FeS cluster in vitro.

Our lab will provide expertise on the biochemical-genetic strategy of in vitro reconstitution of pathways for assembly and maturation of Fe-S cofactor containing proteins. Our concept involves a broad range of methodologies. This includes manipulation of genes, overexpression (E. coli as host) and anaerobic isolation of protein complexes and intermediates, that bound cofactor precursors in preparative amounts. The analytical methods include anoxic enzyme kinetics, UV-vis spectroscopy, FPLC, functional protein-protein interaction (thermophoresis), metal detection (ICP-MS), and native gel electrophoresis. Spectroscopic methods like infrared spectroscopy, surface-enhanced IR absorption spectroscopy (SEIRAS), and Raman spectroscopy are well established in our Lab (Sven Stripp). All methods are performed in a glove box including isotope editing of the carbonyl ligands of cofactor.

Span, Ingrid Bioinorganic chemistry, biophysics, and structural biology. Aerobic and anaerobic protein production, characterization of metalloproteins using biophysical techniques, characterization of metal protein interactions, assembly of artificial metal clusters and incorporation into proteins, macromolecular crystallography, structural and functional analysis of catalytically active nucleic acids and metalloproteins. Copper proteins, heme proteins, rubredoxins, iron-sulfur proteins, and [FeFe] hydrogenase. ‑ production of iron-sulfur proteins in tailored cell strains

– isolation of metalloproteins under aerobic and anaerobic conditions

– electronic absorption spectroscopy

– CD spectroscopy

– crystallization under aerobic and anaerobic conditions

– structure solution by X-ray diffraction

Stripp, Sven Development and application of operando spectroscopy and electrochemistry for the analysis of living cells and biological macromolecules. I focus on FTIR difference spectroscopy under physiologically relevant conditions (ambient temperature and pressure, hydrated sample at moderate pH, etc.). Making use of IR absorbance in attenuated total reflectance (ATR) configuration, a very low sample consumption is guaranteed. -FTIR difference spectroscopy

-Time-resolved IR spectroscopy

-Protein film electrochemistry

-FTIR spectroelectrochemistry

-UV/vis and fluorescence spectroscopy

-Quantitative gas treatments

-Anaerobic conditions


Ullmann, Matthias In our research, we investigate the function of proteins by various computational methods on the basis of structural models of the proteins. Mainly we are interested in proteins that are involved in various biological energy transduction pathways. Many of these proteins are metalloproteins or cofactor-containing proteins. To study these proteins and processes, we apply a variety of theoretical methods including continuum electrostatics calculations, elastic network models, molecular dynamics simulations and quantum chemical calculations. Moreover, we develop methods to analyze and simulate the energetics and kinetics of charge and exciton transfer processes.

We use a large variety of structure-based modelling techniques to understand enzymatic mechanisms. We can analyze electrostatic potentials of proteins, calculate protonation probabilities, relative pKa values and relative redox potentials. Moreover, we can determine reaction paths of enzymatic mechanism on the basis of crystal structures.

Wagner, Tristan Cultivation and microbiology studies of strictly anaerobic organisms, with an emphasis on acetogenic bacteria and methanogenic archaea.
C1-metabolism such as the reductive acetyl-CoA pathway using carbon monoxide and different type of methanogenesis.
Structural biology and biochemistry of metallo-enzymes, phasing ab initio by Sulfur, Iron, Molybdenum or Tungsten SAD.
Electron transferring macromolecular complexes (iron-sulfur cluster chain) and internal channeling system to transfer intermediate gases or metabolites.
[NiFe]-hydrogenase and [Fe]-hydrogenase mechanistic.
Tungstopterin/Molybdopterin-containing formate dehydrogenases.
Carbon-monoxide dehydrogenases and their evolution.
Electron bifurcating/confurcating systems.

-The Max Planck Institute for Marine Microbiology offers a collaborative expertise in the cultivation of known and newly discovered anaerobic bacteria and archaea.
-Cell physiology and anaerobic handling of cellular materials.
-Classic (anaerobic) biochemistry: native and denaturing poly-acrylamide gel electrophoresis, enzymology in vitro, in cristallo and in native gel. UV/Vis spectrophotometry with microliters volume (aerobic).
-Anaerobic isolation of light- and oxygen-sensitive proteins by chromatography-based native purification with multi-wavelength FPLC systems. Manual / robotic (OryxNano) anaerobic crystallization.
-X-ray crystallography and structural analysis of metabolic enzymes and metallo-proteins. Metal-determination by X-ray fluorescence and X-ray crystallography by synchrotron radiation. Ab initio phasing and protein identification by S-SAD via a collaboration with the Swiss Light Source.

Zebger, Ingo

The group has a long standing experience in the vibrational spectroscopic characterization of metalloproteins, including the type of proteins that are in the center of the project, i.e. hydrogenases, iron-sulfur proteins. In the past decades the group has made substantial contributions to the elucidation of structure-function relationships in metalloenzymes, in many cases in tight collaboration with groups in the field of theory, and molecular and structural biology. Furthermore, substantial methodological developments have been made in our group that are particularly advantageous for the project and the entire consortium. These are the adaptation of IR and RR spectroscopy to immobilized enzymes on electrodes coated with model membranes models (SEIRA, SERR spectroscopy), extension of SERR and SEIRA spectroscopy to the time-resolved domain, application of the freeze-quench to RR and EPR spectroscopy, IR +  RR spectroscopy analysis of protein crystals, vibrational spectroscopy at cryogenic temperatures, IR/SEIRA spectroscopy under strictly anaerobic conditions, IR and EPR spectroscopy of enzymes in whole cells, and the development of integral theoretical/spectroscopic approaches for determining cofactor structures (in collaboration).

We will make the advanced vibrational spectroscopic techniques described in the “Expertise” section available to all projects in the consortium.