1sui

<table><tr><td colspan='2'>[[1sui]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Alfalfa Alfalfa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SUI OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1SUI FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=FRE:FERULOYL+COENZYME+A'>FRE</scene>, <scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1sus|1sus]]</div></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CCOMT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3879 Alfalfa])</td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Caffeoyl-CoA_O-methyltransferase Caffeoyl-CoA O-methyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.104 2.1.1.104] </span></td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1sui FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1sui OCA], [http://pdbe.org/1sui PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1sui RCSB], [http://www.ebi.ac.uk/pdbsum/1sui PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1sui ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/CAMT_MEDSA CAMT_MEDSA]] Methylates caffeoyl-CoA to feruloyl-CoA and 5-hydroxyferuloyl-CoA to sinapoyl-CoA. Plays a role in the synthesis of feruloylated polysaccharides. Involved in the reinforcement of the plant cell wall. Also involved in the responding to wounding or pathogen challenge by the increased formation of cell wall-bound ferulic acid polymers.

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== Publication Abstract from PubMed ==

Caffeoyl coenzyme A 3-O-methyltransferases (CCoAOMTs) are S-adenosyl-l-methionine-dependent O-methyltransferases (OMTs) involved in lignin biosynthesis. Plant CCoAOMTs belong to a distinct family of OMTs, more closely related to the mammalian catechol OMTs than to other plant OMTs. The crystal structure of alfalfa (Medicago sativa) CCoAOMT in complex with the reaction products S-adenosine-l-homocysteine and feruloyl/sinapoyl CoAs presented here belong to a structurally and mechanistically distinct family of plant small molecule OMTs. These structures provide a new understanding of the substrate preferences and the catalytic mechanism accompanying CCoAOMT-mediated O-methylation of CoA-linked phenylpropanoid substrates.

Crystal structures of alfalfa caffeoyl coenzyme A 3-O-methyltransferase.,Ferrer JL, Zubieta C, Dixon RA, Noel JP Plant Physiol. 2005 Mar;137(3):1009-17. Epub 2005 Feb 25. PMID:15734921<ref>PMID:15734921</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1sui" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Alfalfa]]

[[Category: Caffeoyl-CoA O-methyltransferase]]

[[Category: Dixon, R A]]

[[Category: Ferrer, J L]]

[[Category: Noel, J P]]

[[Category: Protein-cofactor-substrate complex]]

[[Category: Rossmann fold]]

[[Category: Transferase]]