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1poc

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(New page: 200px<br /><applet load="1poc" size="450" color="white" frame="true" align="right" spinBox="true" caption="1poc, resolution 2.0&Aring;" /> '''CRYSTAL STRUCTURE OF ...)
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[[Image:1poc.gif|left|200px]]<br /><applet load="1poc" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1poc, resolution 2.0&Aring;" />
 
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'''CRYSTAL STRUCTURE OF BEE-VENOM PHOSPHOLIPASE A2 IN A COMPLEX WITH A TRANSITION-STATE ANALOGUE'''<br />
 
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==Overview==
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==CRYSTAL STRUCTURE OF BEE-VENOM PHOSPHOLIPASE A2 IN A COMPLEX WITH A TRANSITION-STATE ANALOGUE==
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The 2.0 angstroms crystal structure of a complex containing bee-venom, phospholipase A2 (PLA2) and a phosphonate transition-state analogue was, solved by multiple isomorphous replacement. The electron-density map is, sufficiently detailed to visualize the proximal sugars of the enzyme's, N-linked carbohydrate and a single molecule of the transition-state, analogue bound ot its active center. Although bee-venom PLA2 does not, belong to the large homologous Class I/II family that encompasses most, other well-studied PLA2s, there is segmental sequence similarity and, conservation of many functional substructures. Comparison of the bee-venom, enzyme with other phospholipase structures provides compelling evidence, for a common catalytic mechanism.
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<StructureSection load='1poc' size='340' side='right'caption='[[1poc]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1poc]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Apis_mellifera Apis mellifera]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1POC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1POC FirstGlance]. <br>
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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&#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=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GEL:1-O-OCTYL-2-HEPTYLPHOSPHONYL-SN-GLYCERO-3-PHOSPHOETHANOLAMINE'>GEL</scene></td></tr>
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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=1poc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1poc OCA], [https://pdbe.org/1poc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1poc RCSB], [https://www.ebi.ac.uk/pdbsum/1poc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1poc ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/PA2_APIME PA2_APIME] PLA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides.
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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/po/1poc_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=1poc ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1POC is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Apis_mellifera Apis mellifera] with CA and GEL as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Phospholipase_A(2) Phospholipase A(2)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.4 3.1.1.4] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1POC OCA].
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*[[Phospholipase A2 3D structures|Phospholipase A2 3D structures]]
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__TOC__
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==Reference==
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</StructureSection>
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Crystal structure of bee-venom phospholipase A2 in a complex with a transition-state analogue., Scott DL, Otwinowski Z, Gelb MH, Sigler PB, Science. 1990 Dec 14;250(4987):1563-6. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=2274788 2274788]
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[[Category: Apis mellifera]]
[[Category: Apis mellifera]]
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[[Category: Phospholipase A(2)]]
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[[Category: Large Structures]]
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[[Category: Single protein]]
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[[Category: Otwinowski Z]]
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[[Category: Otwinowski, Z.]]
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[[Category: Scott DL]]
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[[Category: Scott, D.L.]]
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[[Category: Sigler PB]]
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[[Category: Sigler, P.B.]]
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[[Category: CA]]
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[[Category: GEL]]
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[[Category: hydrolase]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Nov 20 23:58:13 2007''
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Current revision

CRYSTAL STRUCTURE OF BEE-VENOM PHOSPHOLIPASE A2 IN A COMPLEX WITH A TRANSITION-STATE ANALOGUE

PDB ID 1poc

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