View source for 2yck


==methyltransferase bound with tetrahydrofolate==
<StructureSection load='2yck' size='340' side='right'caption='[[2yck]], [[Resolution|resolution]] 2.15&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2yck]] is a 1 chain structure with sequence from [https://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=2YCK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2YCK FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.15&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=THG:(6S)-5,6,7,8-TETRAHYDROFOLATE'>THG</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=2yck FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2yck OCA], [https://pdbe.org/2yck PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2yck RCSB], [https://www.ebi.ac.uk/pdbsum/2yck PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2yck ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q3ACR9_CARHZ Q3ACR9_CARHZ] 
<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&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2yck" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Carboxydothermus hydrogenoformans Z-2901]]
[[Category: Large Structures]]
[[Category: Dobbek H]]
[[Category: Goetzl S]]
[[Category: Hennig SE]]
[[Category: Jeoung J-H]]