1m3u

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[[Image:1m3u.gif|left|200px]]<br /><applet load="1m3u" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1m3u, resolution 1.800&Aring;" />
 
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'''Crystal Structure of Ketopantoate Hydroxymethyltransferase complexed the Product Ketopantoate'''<br />
 
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==Overview==
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==Crystal Structure of Ketopantoate Hydroxymethyltransferase complexed the Product Ketopantoate==
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We report the crystal structure of E. coli ketopantoate hydroxymethyltransferase (KPHMT) at 1.9 A resolution, in complex with its product, ketopantoate. KPHMT catalyzes the first step in the biosynthesis of pantothenate (vitamin B(5)), the precursor of coenzyme A and the acyl carrier protein cofactor. The structure of the decameric enzyme was solved by multiwavelength anomalous dispersion to locate 160 selenomethionine sites and phase 560 kDa of protein, making it the largest structure solved by this approach. KPHMT adopts the (betaalpha)(8) barrel fold and is a member of the phosphoenolpyruvate/pyruvate superfamily. The active site contains a ketopantoate bidentately coordinated to Mg(2+). Similar binding is likely for the substrate, alpha-ketoisovalerate, orienting the C3 for deprotonation.
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<StructureSection load='1m3u' size='340' side='right'caption='[[1m3u]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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== Structural highlights ==
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==About this Structure==
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<table><tr><td colspan='2'>[[1m3u]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M3U OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1M3U FirstGlance]. <br>
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1M3U is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with <scene name='pdbligand=MG:'>MG</scene> and <scene name='pdbligand=KPL:'>KPL</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/3-methyl-2-oxobutanoate_hydroxymethyltransferase 3-methyl-2-oxobutanoate hydroxymethyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.2.11 2.1.2.11] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M3U OCA].
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=KPL:KETOPANTOATE'>KPL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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==Reference==
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1m3u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m3u OCA], [https://pdbe.org/1m3u PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1m3u RCSB], [https://www.ebi.ac.uk/pdbsum/1m3u PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1m3u ProSAT]</span></td></tr>
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Structure of E. coli ketopantoate hydroxymethyl transferase complexed with ketopantoate and Mg2+, solved by locating 160 selenomethionine sites., von Delft F, Inoue T, Saldanha SA, Ottenhof HH, Schmitzberger F, Birch LM, Dhanaraj V, Witty M, Smith AG, Blundell TL, Abell C, Structure. 2003 Aug;11(8):985-96. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=12906829 12906829]
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</table>
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[[Category: 3-methyl-2-oxobutanoate hydroxymethyltransferase]]
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== Function ==
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[https://www.uniprot.org/uniprot/PANB_ECOLI PANB_ECOLI] Catalyzes the reversible reaction in which hydroxymethyl group from 5,10-methylenetetrahydrofolate is tranferred onto alpha-ketoisovalerate to form ketopantoate.<ref>PMID:776976</ref>
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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/m3/1m3u_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/main_output.php?pdb_ID=1m3u ConSurf].
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<div style="clear:both"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Abell, C.]]
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[[Category: Abell C]]
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[[Category: Blundell, T L.]]
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[[Category: Blundell TL]]
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[[Category: Delft, F von.]]
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[[Category: Dhanaraj V]]
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[[Category: Dhanaraj, V.]]
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[[Category: Inoue T]]
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[[Category: Inoue, T.]]
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[[Category: Ottenhof HH]]
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[[Category: Ottenhof, H H.]]
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[[Category: Saldanha SA]]
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[[Category: Saldanha, S A.]]
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[[Category: Smith AG]]
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[[Category: Smith, A G.]]
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[[Category: Witty M]]
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[[Category: Witty, M.]]
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[[Category: Von Delft F]]
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[[Category: KPL]]
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[[Category: MG]]
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[[Category: beta-alpha-barrel]]
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[[Category: decamer]]
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[[Category: ketopantoate]]
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[[Category: selenomethionine mad]]
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[[Category: tim-barrel]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:51:08 2008''
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Current revision

Crystal Structure of Ketopantoate Hydroxymethyltransferase complexed the Product Ketopantoate

PDB ID 1m3u

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