1x8i

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[[Image:1x8i.png|left|200px]]
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==Crystal Structure of the Zinc Carbapenemase CphA in Complex with the Antibiotic Biapenem==
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<StructureSection load='1x8i' size='340' side='right' caption='[[1x8i]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1x8i]] is a 1 chain structure with 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]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1X8I FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><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><br>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1x8g|1x8g]], [[1x8h|1x8h]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">cphA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=644 Aeromonas hydrophila])</td></tr>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Beta-lactamase Beta-lactamase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.2.6 3.5.2.6] </span></td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1x8i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1x8i OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1x8i RCSB], [http://www.ebi.ac.uk/pdbsum/1x8i PDBsum]</span></td></tr>
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<table>
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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/chain_selection.php?pdb_ID=2ata 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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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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{{STRUCTURE_1x8i| PDB=1x8i | SCENE= }}
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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:15588826<ref>PMID:15588826</ref>
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===Crystal Structure of the Zinc Carbapenemase CphA in Complex with the Antibiotic Biapenem===
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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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{{ABSTRACT_PUBMED_15588826}}
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==About this Structure==
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[[1x8i]] is a 1 chain structure with 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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==See Also==
==See Also==
*[[Beta-lactamase|Beta-lactamase]]
*[[Beta-lactamase|Beta-lactamase]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:015588826</ref><ref group="xtra">PMID:015215079</ref><ref group="xtra">PMID:007588620</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: Aeromonas hydrophila]]
[[Category: Aeromonas hydrophila]]
[[Category: Beta-lactamase]]
[[Category: Beta-lactamase]]

Revision as of 19:52, 28 September 2014

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

1x8i, resolution 1.90Å

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