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1igb

From Proteopedia

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[[Image:1igb.gif|left|200px]]<br /><applet load="1igb" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1igb, resolution 2.3&Aring;" />
 
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'''AEROMONAS PROTEOLYTICA AMINOPEPTIDASE COMPLEXED WITH THE INHIBITOR PARA-IODO-D-PHENYLALANINE HYDROXAMATE'''<br />
 
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==Overview==
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==AEROMONAS PROTEOLYTICA AMINOPEPTIDASE COMPLEXED WITH THE INHIBITOR PARA-IODO-D-PHENYLALANINE HYDROXAMATE==
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The structure of the complex of Aeromonas proteolytica aminopeptidase, a two-zinc exopeptidase, with the inhibitor p-iodo-D-phenylalanine hydroxamate has been determined by X-ray crystallography. Refinement of the structure, which includes 220 water molecules, using data at 0.80-0.23-nm resolution resulted in a crystallographic residual R value of 16%. The hydroxamate group adopts a planar conformation whereby the two oxygen atoms interact with the zinc ions. The N-hydroxyl group of the inhibitor is located between the two zinc ions, a position which is close to that occupied by a water molecule in the native structure. The carbonyl oxygen of the inhibitor binds to Zn1, which becomes pentacoordinated while Zn2 remains tetracoordinated, in contrast to the native protein where both zinc ions were shown to be tetracoordinated and structurally equivalent. Interactions of the carboxylate oxygens of Glu151 with the hydroxamate group play an important role in the stabilization of the complex.
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<StructureSection load='1igb' size='340' side='right'caption='[[1igb]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1igb]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_proteolyticus Vibrio proteolyticus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IGB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IGB 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]] 2.3&#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=IPO:PARA-IODO-D-PHENYLALANINE+HYDROXAMIC+ACID'>IPO</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=1igb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1igb OCA], [https://pdbe.org/1igb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1igb RCSB], [https://www.ebi.ac.uk/pdbsum/1igb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1igb ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/AMPX_VIBPR AMPX_VIBPR]
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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/ig/1igb_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=1igb 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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1IGB is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Vibrio_proteolyticus Vibrio proteolyticus] with <scene name='pdbligand=ZN:'>ZN</scene> and <scene name='pdbligand=IPO:'>IPO</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Bacterial_leucyl_aminopeptidase Bacterial leucyl aminopeptidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.11.10 3.4.11.10] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IGB OCA].
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*[[Aminopeptidase 3D structures|Aminopeptidase 3D structures]]
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__TOC__
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==Reference==
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</StructureSection>
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The structure of the Aeromonas proteolytica aminopeptidase complexed with a hydroxamate inhibitor. Involvement in catalysis of Glu151 and two zinc ions of the co-catalytic unit., Chevrier B, D'Orchymont H, Schalk C, Tarnus C, Moras D, Eur J Biochem. 1996 Apr 15;237(2):393-8. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=8647077 8647077]
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[[Category: Large Structures]]
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[[Category: Bacterial leucyl aminopeptidase]]
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[[Category: Single protein]]
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[[Category: Vibrio proteolyticus]]
[[Category: Vibrio proteolyticus]]
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[[Category: Chevrier, B.]]
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[[Category: Chevrier B]]
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[[Category: Moras, D.]]
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[[Category: D'Orchymont H]]
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[[Category: Orchymont, H D.]]
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[[Category: Moras D]]
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[[Category: Schalk, C.]]
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[[Category: Schalk C]]
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[[Category: Tarnus, C.]]
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[[Category: Tarnus C]]
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[[Category: IPO]]
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[[Category: ZN]]
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[[Category: aminopeptidase]]
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[[Category: hydrolase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:11:32 2008''
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Current revision

AEROMONAS PROTEOLYTICA AMINOPEPTIDASE COMPLEXED WITH THE INHIBITOR PARA-IODO-D-PHENYLALANINE HYDROXAMATE

PDB ID 1igb

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