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==Crystal structure of (WT) Rat Catechol-O-Methyltransferase in complex with AdoMet and 3,5-dinitrocatechol (DNC)== | ==Crystal structure of (WT) Rat Catechol-O-Methyltransferase in complex with AdoMet and 3,5-dinitrocatechol (DNC)== | ||
<StructureSection load='5fhq' size='340' side='right' caption='[[5fhq]], [[Resolution|resolution]] 1.63Å' scene=''> | <StructureSection load='5fhq' size='340' side='right'caption='[[5fhq]], [[Resolution|resolution]] 1.63Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[5fhq]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5FHQ OCA]. For a <b>guided tour on the structure components</b> use [http:// | <table><tr><td colspan='2'>[[5fhq]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5FHQ OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5FHQ FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DNC:3,5-DINITROCATECHOL'>DNC</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DNC:3,5-DINITROCATECHOL'>DNC</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Comt ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Buffalo rat])</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Catechol_O-methyltransferase Catechol O-methyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.6 2.1.1.6] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Catechol_O-methyltransferase Catechol O-methyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.6 2.1.1.6] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http:// | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5fhq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5fhq OCA], [http://pdbe.org/5fhq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5fhq RCSB], [http://www.ebi.ac.uk/pdbsum/5fhq PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5fhq ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
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</div> | </div> | ||
<div class="pdbe-citations 5fhq" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 5fhq" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Catechol O-methyltransferase 3D structures|Catechol O-methyltransferase 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Buffalo rat]] | |||
[[Category: Catechol O-methyltransferase]] | [[Category: Catechol O-methyltransferase]] | ||
[[Category: Large Structures]] | |||
[[Category: Levy, C]] | [[Category: Levy, C]] | ||
[[Category: Methyltransferase regioselectivity]] | [[Category: Methyltransferase regioselectivity]] | ||
[[Category: Transferase]] | [[Category: Transferase]] | ||
Revision as of 10:20, 6 May 2020
Crystal structure of (WT) Rat Catechol-O-Methyltransferase in complex with AdoMet and 3,5-dinitrocatechol (DNC)Crystal structure of (WT) Rat Catechol-O-Methyltransferase in complex with AdoMet and 3,5-dinitrocatechol (DNC)
Structural highlights
Function[COMT_RAT] Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol. Publication Abstract from PubMedCatechol-O-methyltransferase (COMT), an important therapeutic target in the treatment of Parkinson's disease, is also being developed for biocatalytic processes, including vanillin production, although lack of regioselectivity has precluded its more widespread application. By using structural and mechanistic information, regiocomplementary COMT variants were engineered that deliver either meta- or para-methylated catechols. X-ray crystallography further revealed how the active-site residues and quaternary structure govern regioselectivity. Finally, analogues of AdoMet are accepted by the regiocomplementary COMT mutants and can be used to prepare alkylated catechols, including ethyl vanillin. Effects of Active-Site Modification and Quaternary Structure on the Regioselectivity of Catechol-O-Methyltransferase.,Law BJ, Bennett MR, Thompson ML, Levy C, Shepherd SA, Leys D, Micklefield J Angew Chem Int Ed Engl. 2016 Jan 21. doi: 10.1002/anie.201508287. PMID:26797714[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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