2ycl
From Proteopedia
(Difference between revisions)
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| - | + | ==complete structure of the corrinoid,iron-sulfur protein including the N-terminal domain with a 4Fe-4S cluster== | |
| - | + | <StructureSection load='2ycl' size='340' side='right' caption='[[2ycl]], [[Resolution|resolution]] 1.95Å' scene=''> | |
| - | + | == Structural highlights == | |
| + | <table><tr><td colspan='2'>[[2ycl]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Carboxydothermus_hydrogenoformans_z-2901 Carboxydothermus hydrogenoformans z-2901]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2YCL OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2YCL FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=B12:COBALAMIN'>B12</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2yck|2yck]], [[2yci|2yci]], [[2ycj|2ycj]]</td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ycl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ycl OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2ycl RCSB], [http://www.ebi.ac.uk/pdbsum/2ycl PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Several anaerobic acetogenic, methanogenic, hydrogenogenic, and sulfate-reducing microorganisms are able to use the reductive acetyl-CoA (Wood-Ljungdahl) pathway to convert CO(2) into biomass. The reductive acetyl-CoA pathway consists of two branches connected by the Co/Fe-containing corrinoid iron-sulfur protein (CoFeSP), which transfers a methyl group from a methyltransferase (MeTr)/methyltetrahydrofolate (CH(3)-H(4) folate) complex to the reduced Ni-Ni-[4Fe-4S] cluster (cluster A) of acetyl-CoA synthase. We investigated the CoFeSP and MeTr couple of the hydrogenogenic bacterium Carboxydothermus hydrogenoformans and show that the two proteins are able to catalyze the methyl-group transfer reaction from CH(3)-H(4) folate to the Co(I) center of CoFeSP. We determined the crystal structures of both proteins. The structure of CoFeSP includes the previously unresolved N-terminal domain of the large subunit of CoFeSP, revealing a unique four-helix-bundle-like architecture in which a [4Fe-4S] cluster is shielded by hydrophobic amino acids. It further reveals that the corrinoid and the [4Fe-4S] cluster binding domains are mobile, which is mandatory for the postulated electron transfer between them. Furthermore, we solved the crystal structures of apo-MeTr, CH(3)-H(4)-folate-bound MeTr, and H(4)-folate-bound MeTr, revealing a substrate-induced closure of the CH(3)-H(4) folate binding cavity of MeTr. We observed three different conformations of Asn200 depending on the substrate bound in the active site, demonstrating its conformational modulation by hydrogen-bonding interactions with the substrate. The observed flexibility could be essential to stabilize the transition state during methyl-group transfer. The conformational space and role of Asn200 are likely conserved in homologous cobalamin-dependent MeTrs such as methionine synthase. | ||
| - | + | Structural Basis for Electron and Methyl-Group Transfer in a Methyltransferase System Operating in the Reductive Acetyl-CoA Pathway.,Goetzl S, Jeoung JH, Hennig SE, Dobbek H J Mol Biol. 2011 Aug 5;411(1):96-109. Epub 2011 May 27. PMID:21640123<ref>PMID:21640123</ref> | |
| - | + | ||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
==See Also== | ==See Also== | ||
*[[Acetyl-CoA synthase|Acetyl-CoA synthase]] | *[[Acetyl-CoA synthase|Acetyl-CoA synthase]] | ||
*[[Carbon monoxide dehydrogenase|Carbon monoxide dehydrogenase]] | *[[Carbon monoxide dehydrogenase|Carbon monoxide dehydrogenase]] | ||
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| + | </StructureSection> | ||
[[Category: Carboxydothermus hydrogenoformans z-2901]] | [[Category: Carboxydothermus hydrogenoformans z-2901]] | ||
| - | [[Category: Dobbek, H | + | [[Category: Dobbek, H]] |
| - | [[Category: Goetzl, S | + | [[Category: Goetzl, S]] |
| - | [[Category: Hennig, S E | + | [[Category: Hennig, S E]] |
| - | [[Category: Jeoung, J H | + | [[Category: Jeoung, J H]] |
[[Category: Transferase]] | [[Category: Transferase]] | ||
Revision as of 08:27, 20 January 2015
complete structure of the corrinoid,iron-sulfur protein including the N-terminal domain with a 4Fe-4S cluster
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