3iss

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[[Image:3iss.png|left|200px]]
 
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==Crystal structure of enolpyruvyl-UDP-GlcNAc synthase (MurA):UDP-N-acetylmuramic acid:phosphite from Escherichia coli==
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The line below this paragraph, containing "STRUCTURE_3iss", creates the "Structure Box" on the page.
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<StructureSection load='3iss' size='340' side='right'caption='[[3iss]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[3iss]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ISS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ISS FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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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]] 2.5&#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=EPU:URIDINE-DIPHOSPHATE-2(N-ACETYLGLUCOSAMINYL)+BUTYRIC+ACID'>EPU</scene>, <scene name='pdbligand=PO3:PHOSPHITE+ION'>PO3</scene></td></tr>
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{{STRUCTURE_3iss| PDB=3iss | SCENE= }}
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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=3iss FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3iss OCA], [https://pdbe.org/3iss PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3iss RCSB], [https://www.ebi.ac.uk/pdbsum/3iss PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3iss ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/MURA_ECOLI MURA_ECOLI] Cell wall formation. Adds enolpyruvyl to UDP-N-acetylglucosamine. Target for the antibiotic phosphomycin.[HAMAP-Rule:MF_00111]
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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/is/3iss_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=3iss 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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MurA (enolpyruvyl UDP-GlcNAc synthase) catalyzes the first committed step in peptidoglycan biosynthesis. In this study, MurA-catalyzed breakdown of its tetrahedral intermediate (THI), with a k(cat)/K(M) of 520 M(-1) s(-1), was far slower than the normal reaction, and 3 x 10(5)-fold slower than the homologous enzyme, AroA, reacting with its THI. This provided kinetic evidence of slow binding and a conformationally constrained active site. The MurA cocrystal structure with UDP-N-acetylmuramic acid (UDP-MurNAc), a potent inhibitor, and phosphite revealed a new "staged" MurA conformation in which the Arg397 side chain tracked phosphite out of the catalytic site. The closed-to-staged transition involved breaking eight MurA.ligand ion pairs, and three intraprotein hydrogen bonds helping hold the active site loop closed. These were replaced with only two MurA.UDP-MurNAc ion pairs, two with phosphite, and seven new intraprotein ion pairs or hydrogen bonds. Cys115 appears to have an important role in forming the staged conformation. The staged conformation appears to be one step in a complex choreography of release of the product from MurA.
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===Crystal structure of enolpyruvyl-UDP-GlcNAc synthase (MurA):UDP-N-acetylmuramic acid:phosphite from Escherichia coli===
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Evidence of Kinetic Control of Ligand Binding and Staged Product Release in MurA (Enolpyruvyl UDP-GlcNAc Synthase)-Catalyzed Reactions .,Jackson SG, Zhang F, Chindemi P, Junop MS, Berti PJ Biochemistry. 2009 Nov 18. PMID:19899805<ref>PMID:19899805</ref>
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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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<div class="pdbe-citations 3iss" style="background-color:#fffaf0;"></div>
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==See Also==
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The line below this paragraph, {{ABSTRACT_PUBMED_19899805}}, adds the Publication Abstract to the page
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*[[Enoylpyruvate transferase 3D structures|Enoylpyruvate transferase 3D structures]]
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(as it appears on PubMed at http://www.pubmed.gov), where 19899805 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_19899805}}
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__TOC__
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</StructureSection>
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==About this Structure==
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[[Category: Escherichia coli K-12]]
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[[3iss]] is a 12 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli_k-12 Escherichia coli k-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ISS OCA].
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[[Category: Large Structures]]
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[[Category: Berti PJ]]
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==Reference==
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[[Category: Chindemi P]]
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<ref group="xtra">PMID:019899805</ref><references group="xtra"/>
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[[Category: Jackson SG]]
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[[Category: Escherichia coli k-12]]
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[[Category: Junop MS]]
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[[Category: UDP-N-acetylglucosamine 1-carboxyvinyltransferase]]
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[[Category: Zhang F]]
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[[Category: Berti, P J.]]
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[[Category: Chindemi, P.]]
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[[Category: Jackson, S G.]]
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[[Category: Junop, M S.]]
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[[Category: Zhang, F.]]
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[[Category: Cell cycle]]
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[[Category: Cell division]]
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[[Category: Cell shape]]
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[[Category: Cell wall biogenesis/degradation]]
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[[Category: Peptidoglycan synthesis]]
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[[Category: Protein-ligand]]
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[[Category: Transferase]]
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Current revision

Crystal structure of enolpyruvyl-UDP-GlcNAc synthase (MurA):UDP-N-acetylmuramic acid:phosphite from Escherichia coli

PDB ID 3iss

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