5d4t: Difference between revisions
From Proteopedia
Jump to navigationJump to search
m Protected "5d4t" [edit=sysop:move=sysop] |
No edit summary |
||
| Line 1: | Line 1: | ||
==SeMet-labelled HcgC from Methanocaldococcus jannaschii in space group P212121== | |||
<StructureSection load='5d4t' size='340' side='right' caption='[[5d4t]], [[Resolution|resolution]] 2.90Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5d4t]] is a 8 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5D4T OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5D4T FirstGlance]. <br> | |||
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></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=5d4t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5d4t OCA], [http://pdbe.org/5d4t PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5d4t RCSB], [http://www.ebi.ac.uk/pdbsum/5d4t PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5d4t ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Previous retrosynthetic and isotope-labeling studies have indicated that biosynthesis of the iron guanylylpyridinol (FeGP) cofactor of [Fe]-hydrogenase requires a methyltransferase. This hypothetical enzyme covalently attaches the methyl group at the 3-position of the pyridinol ring. We describe the identification of HcgC, a gene product of the hcgA-G cluster responsible for FeGP cofactor biosynthesis. It acts as an S-adenosylmethionine (SAM)-dependent methyltransferase, based on the crystal structures of HcgC and the HcgC/SAM and HcgC/S-adenosylhomocysteine (SAH) complexes. The pyridinol substrate, 6-carboxymethyl-5-methyl-4-hydroxy-2-pyridinol, was predicted based on properties of the conserved binding pocket and substrate docking simulations. For verification, the assumed substrate was synthesized and used in a kinetic assay. Mass spectrometry and NMR analysis revealed 6-carboxymethyl-3,5-dimethyl-4-hydroxy-2-pyridinol as the reaction product, which confirmed the function of HcgC. | |||
Identification of HcgC as a SAM-Dependent Pyridinol Methyltransferase in [Fe]-Hydrogenase Cofactor Biosynthesis.,Fujishiro T, Bai L, Xu T, Xie X, Schick M, Kahnt J, Rother M, Hu X, Ermler U, Shima S Angew Chem Int Ed Engl. 2016 Jul 8. doi: 10.1002/anie.201604352. PMID:27391308<ref>PMID:27391308</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 5d4t" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Ermler, U]] | [[Category: Ermler, U]] | ||
[[Category: Fujishiro, T]] | [[Category: Fujishiro, T]] | ||
[[Category: Shima, S]] | |||
[[Category: Rossmann-like fold]] | |||
[[Category: Unknown function]] | |||
Revision as of 15:10, 26 July 2016
SeMet-labelled HcgC from Methanocaldococcus jannaschii in space group P212121
| ||||||||||||
