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5a0y
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==METHYL-COENZYME M REDUCTASE FROM METHANOTHERMOBACTER MARBURGENSIS AT 1.1 A RESOLUTION== | ==METHYL-COENZYME M REDUCTASE FROM METHANOTHERMOBACTER MARBURGENSIS AT 1.1 A RESOLUTION== | ||
| - | <StructureSection load='5a0y' size='340' side='right' caption='[[5a0y]], [[Resolution|resolution]] 1.10Å' scene=''> | + | <StructureSection load='5a0y' size='340' side='right'caption='[[5a0y]], [[Resolution|resolution]] 1.10Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[5a0y]] is a 6 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[5a0y]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Methanothermobacter_marburgensis Methanothermobacter marburgensis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5A0Y OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5A0Y FirstGlance]. <br> |
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.1Å</td></tr> |
| - | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AGM:5-METHYL-ARGININE'>AGM</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=COM:1-THIOETHANESULFONIC+ACID'>COM</scene>, <scene name='pdbligand=DYA:DIDEHYDROASPARTATE'>DYA</scene>, <scene name='pdbligand=F43:FACTOR+430'>F43</scene>, <scene name='pdbligand=GL3:THIOGLYCIN'>GL3</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MGN:2-METHYL-GLUTAMINE'>MGN</scene>, <scene name='pdbligand=MHS:N1-METHYLATED+HISTIDINE'>MHS</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=SMC:S-METHYLCYSTEINE'>SMC</scene>, <scene name='pdbligand=TP7:COENZYME+B'>TP7</scene></td></tr> | |
| - | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5a0y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5a0y OCA], [https://pdbe.org/5a0y PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5a0y RCSB], [https://www.ebi.ac.uk/pdbsum/5a0y PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5a0y ProSAT]</span></td></tr> | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | |
</table> | </table> | ||
== Function == | == Function == | ||
| - | [ | + | [https://www.uniprot.org/uniprot/MCRA_METTM MCRA_METTM] Reduction of methyl-coenzyme M (2-(methylthio) ethanesulfonic acid) with 7-mercaptoheptanoylthreonine phosphate to methane and a heterodisulfide. |
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | All methanogenic and methanotrophic archaea known to date contain methyl-coenzyme M reductase (MCR) that catalyzes the reversible reduction of methyl-coenzyme M to methane. This enzyme contains the nickel porphinoid F430 as a prosthetic group and, highly conserved, a thioglycine and four methylated amino acid residues near the active site. We describe herein the presence of a novel post-translationally modified amino acid, didehydroaspartate, adjacent to the thioglycine as revealed by mass spectrometry and high-resolution X-ray crystallography. Upon chemical reduction, the didehydroaspartate residue was converted into aspartate. Didehydroaspartate was found in MCR I and II from Methanothermobacter marburgensis and in MCR of phylogenetically distantly related Methanosarcina barkeri but not in MCR I and II of Methanothermobacter wolfeii, which indicates that didehydroaspartate is dispensable but might have a role in fine-tuning the active site to increase the catalytic efficiency. | ||
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| + | Didehydroaspartate Modification in Methyl-Coenzyme M Reductase Catalyzing Methane Formation.,Wagner T, Kahnt J, Ermler U, Shima S Angew Chem Int Ed Engl. 2016 Jul 28. doi: 10.1002/anie.201603882. PMID:27467699<ref>PMID:27467699</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 5a0y" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| - | [[Category: | + | [[Category: Large Structures]] |
[[Category: Methanothermobacter marburgensis]] | [[Category: Methanothermobacter marburgensis]] | ||
| - | [[Category: Ermler | + | [[Category: Ermler U]] |
| - | [[Category: Wagner | + | [[Category: Wagner T]] |
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Current revision
METHYL-COENZYME M REDUCTASE FROM METHANOTHERMOBACTER MARBURGENSIS AT 1.1 A RESOLUTION
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