2z7b

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[[Image:2z7b.png|left|200px]]
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==Crystal Structure of Mesorhizobium loti 3-hydroxy-2-methylpyridine-4,5-dicarboxylate decarboxylase==
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<StructureSection load='2z7b' size='340' side='right' caption='[[2z7b]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2z7b]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Mesorhizobium_loti Mesorhizobium loti]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2Z7B OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2Z7B FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene><br>
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<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">5335 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=381 Mesorhizobium loti])</td></tr>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/3-hydroxy-2-methylpyridine-4,5-dicarboxylate_4-decarboxylase 3-hydroxy-2-methylpyridine-4,5-dicarboxylate 4-decarboxylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.1.51 4.1.1.51] </span></td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2z7b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2z7b OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2z7b RCSB], [http://www.ebi.ac.uk/pdbsum/2z7b PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/z7/2z7b_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The function of the mlr6791 gene from Mesorhizobium loti MAFF303099 has been identified. This gene encodes 3-hydroxy-2-methylpyridine-4,5-dicarboxylate decarboxylase (HMPDdc), an enzyme involved in the catabolism of pyridoxal 5'-phosphate (Vitamin B6). This enzyme was overexpressed in Escherichia coli and characterized. HMPDdc is a 26 kDa protein that catalyzes the decarboxylation of 3-hydroxy-2-methylpyridine-4,5-dicarboxylate to 3-hydroxy-2-methylpyridine-5-carboxylate. The KM and kcat were found to be 366 microM and 0.6 s-1, respectively. The structure of this enzyme was determined at 1.9 A resolution using SAD phasing and belongs to the class II aldolase/adducin superfamily. While the decarboxylation of hydroxy-substituted benzene rings is a common motif in biosynthesis, the mechanism of this reaction is still poorly characterized. The structural studies described here suggest that catalysis of such decarboxylations proceeds by an aldolase-like mechanism.
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{{STRUCTURE_2z7b| PDB=2z7b | SCENE= }}
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Gene identification and structural characterization of the pyridoxal 5'-phosphate degradative protein 3-hydroxy-2-methylpyridine-4,5-dicarboxylate decarboxylase from mesorhizobium loti MAFF303099.,Mukherjee T, McCulloch KM, Ealick SE, Begley TP Biochemistry. 2007 Nov 27;46(47):13606-15. Epub 2007 Oct 31. PMID:17973403<ref>PMID:17973403</ref>
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===Crystal Structure of Mesorhizobium loti 3-hydroxy-2-methylpyridine-4,5-dicarboxylate decarboxylase===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_17973403}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[2z7b]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Mesorhizobium_loti Mesorhizobium loti]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2Z7B OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:017973403</ref><references group="xtra"/>
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[[Category: 3-hydroxy-2-methylpyridine-4,5-dicarboxylate 4-decarboxylase]]
[[Category: 3-hydroxy-2-methylpyridine-4,5-dicarboxylate 4-decarboxylase]]
[[Category: Mesorhizobium loti]]
[[Category: Mesorhizobium loti]]

Revision as of 05:07, 2 October 2014

Crystal Structure of Mesorhizobium loti 3-hydroxy-2-methylpyridine-4,5-dicarboxylate decarboxylase

2z7b, resolution 1.90Å

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