1bvt

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[[Image:1bvt.gif|left|200px]]
 
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==METALLO-BETA-LACTAMASE FROM BACILLUS CEREUS 569/H/9==
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The line below this paragraph, containing "STRUCTURE_1bvt", creates the "Structure Box" on the page.
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<StructureSection load='1bvt' size='340' side='right'caption='[[1bvt]], [[Resolution|resolution]] 1.85&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'>[[1bvt]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_cereus Bacillus cereus]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1bme 1bme]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BVT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1BVT 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]] 1.85&#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=BCT:BICARBONATE+ION'>BCT</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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{{STRUCTURE_1bvt| PDB=1bvt | 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=1bvt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bvt OCA], [https://pdbe.org/1bvt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1bvt RCSB], [https://www.ebi.ac.uk/pdbsum/1bvt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1bvt ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/BLA2_BACCE BLA2_BACCE] 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/bv/1bvt_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=1bvt ConSurf].
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<div style="clear:both"></div>
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'''METALLO-BETA-LACTAMASE FROM BACILLUS CEREUS 569/H/9'''
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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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Class B beta-lactamases are wide spectrum enzymes which require bivalent metal ions for activity. The structure of the class B zinc-ion-dependent beta-lactamase from Bacillus cereus (BCII) has been refined at 1.85 A resolution using data collected on cryocooled crystals (100 K). The enzyme from B. cereus has a molecular mass of 24 946 Da and is folded into a beta-sandwich structure with helices on the external faces. The active site is located in a groove running between the two beta-sheets [Carfi et al. (1995). EMBO J. 14, 4914-4921]. The 100 K high-resolution BCII structure shows one fully and one partially occupied zinc sites. The zinc ion in the fully occupied site (the catalytic zinc) is coordinated by three histidines and one water molecule. The second zinc ion is at 3.7 A from the first one and is coordinated by one histidine, one cysteine, one aspartate and one unknown molecule (most likely a carbonate ion). In the B. cereus zinc beta-lactamase the affinity for the second metal-ion is low at the pH of crystallization (Kd = 25 mM, 293 K; [Baldwin et al. (1978). Biochem. J. 175, 441-447] and the dissociation constant of the second zinc ion was thus apparently decreased at the cryogenic temperature. In addition, the structure of the apo enzyme was determined at 2.5 A resolution. The removal of the zinc ion by chelating agents causes small changes in the active-site environment.
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==About this Structure==
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1BVT is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bacillus_cereus Bacillus cereus]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1bme 1bme]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BVT OCA].
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==Reference==
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1.85 A resolution structure of the zinc (II) beta-lactamase from Bacillus cereus., Carfi A, Duee E, Galleni M, Frere JM, Dideberg O, Acta Crystallogr D Biol Crystallogr. 1998 May 1;54(Pt 3):313-23. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9761898 9761898]
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[[Category: Bacillus cereus]]
[[Category: Bacillus cereus]]
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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: Carfi A]]
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[[Category: Carfi, A.]]
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[[Category: Dideberg O]]
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[[Category: Dideberg, O.]]
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[[Category: Duee E]]
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[[Category: Duee, E.]]
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[[Category: Metallo beta-lactamase]]
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[[Category: Zinc]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:00:55 2008''
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Current revision

METALLO-BETA-LACTAMASE FROM BACILLUS CEREUS 569/H/9

PDB ID 1bvt

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