1x8i

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[[Image:1x8i.jpg|left|200px]]
 
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==Crystal Structure of the Zinc Carbapenemase CphA in Complex with the Antibiotic Biapenem==
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The line below this paragraph, containing "STRUCTURE_1x8i", creates the "Structure Box" on the page.
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<StructureSection load='1x8i' size='340' side='right'caption='[[1x8i]], [[Resolution|resolution]] 1.90&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'>[[1x8i]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Aeromonas_hydrophila Aeromonas hydrophila]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1X8I OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1X8I 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]] 1.9&#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=BMH:5H-PYRAZOLO(1,2-A)(1,2,4)TRIAZOL-4-IUM,+6-((2-CARBOXY-6-(1-HYDROXYETHYL)-4-METHYL-7-OXO-1-AZABICYCLO(3.2.0)HEPT-2-EN-3-YL)THIO)-6,7-DIHYDRO-,+HYDROXIDE,+INNER+SALT,+(4R-(4ALPHA,5BETA,6BETA(R*)))-'>BMH</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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{{STRUCTURE_1x8i| PDB=1x8i | 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=1x8i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1x8i OCA], [https://pdbe.org/1x8i PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1x8i RCSB], [https://www.ebi.ac.uk/pdbsum/1x8i PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1x8i ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/BLAB_AERHY BLAB_AERHY] Can hydrolyze carbapenem compounds.
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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/x8/1x8i_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=1x8i ConSurf].
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<div style="clear:both"></div>
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'''Crystal Structure of the Zinc Carbapenemase CphA in Complex with the Antibiotic Biapenem'''
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==See Also==
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*[[Beta-lactamase 3D structures|Beta-lactamase 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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One strategy developed by bacteria to resist the action of beta-lactam antibiotics is the expression of metallo-beta-lactamases. CphA from Aeromonas hydrophila is a member of a clinically important subclass of metallo-beta-lactamases that have only one zinc ion in their active site and for which no structure is available. The crystal structures of wild-type CphA and its N220G mutant show the structural features of the active site of this enzyme, which is modeled specifically for carbapenem hydrolysis. The structure of CphA after reaction with a carbapenem substrate, biapenem, reveals that the enzyme traps a reaction intermediate in the active site. These three X-ray structures have allowed us to propose how the enzyme recognizes carbapenems and suggest a mechanistic pathway for hydrolysis of the beta-lactam. This will be relevant for the design of metallo-beta-lactamase inhibitors as well as of antibiotics that escape their hydrolytic activity.
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==About this Structure==
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1X8I is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Aeromonas_hydrophila Aeromonas hydrophila]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1X8I OCA].
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==Reference==
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A metallo-beta-lactamase enzyme in action: crystal structures of the monozinc carbapenemase CphA and its complex with biapenem., Garau G, Bebrone C, Anne C, Galleni M, Frere JM, Dideberg O, J Mol Biol. 2005 Jan 28;345(4):785-95. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15588826 15588826]
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[[Category: Aeromonas hydrophila]]
[[Category: Aeromonas hydrophila]]
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[[Category: Beta-lactamase]]
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[[Category: Large Structures]]
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[[Category: Single protein]]
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[[Category: Dideberg O]]
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[[Category: Dideberg, O.]]
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[[Category: Garau G]]
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[[Category: Garau, G.]]
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[[Category: Hydrolase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 14:42:18 2008''
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Current revision

Crystal Structure of the Zinc Carbapenemase CphA in Complex with the Antibiotic Biapenem

PDB ID 1x8i

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