2fu7

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(New page: 200px<br /><applet load="2fu7" size="450" color="white" frame="true" align="right" spinBox="true" caption="2fu7, resolution 1.85&Aring;" /> '''Zinc-beta-lactamase ...)
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[[Image:2fu7.jpg|left|200px]]<br /><applet load="2fu7" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="2fu7, resolution 1.85&Aring;" />
 
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'''Zinc-beta-lactamase L1 from stenotrophomonas maltophilia (Cu-substituted form)'''<br />
 
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==Overview==
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==Zinc-beta-lactamase L1 from stenotrophomonas maltophilia (Cu-substituted form)==
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The 3-D structure of Bacillus cereus (569/H/9) beta-lactamase (EC, 3.5.2.6), which catalyses the hydrolysis of nearly all beta-lactams, has, been solved at 2.5 A resolution by the multiple isomorphous replacement, method, with density modification and phase combination, from crystals of, the native protein and of a specially designed mutant (T97C). The current, model includes 212 of the 227 amino acid residues, the zinc ion and 10, water molecules. The protein is folded into a beta beta sandwich with, helices on each external face. To our knowledge, this fold has never been, observed. An approximate internal molecular symmetry is found, with a, 2-fold axis passing roughly through the zinc ion and suggesting a possible, gene duplication. The active site is located at one edge of the beta beta, sandwich and near the N-terminal end of a helix. The zinc ion is, coordinated by three histidine residues (86, 88 and 149) and a water, molecule. A sequence comparison of the relevant metallo-beta-lactamases, based on this protein structure, highlights a few well-conserved amino, acid residues. The structure shows that most of these residues are in the, active site. Among these, aspartic acid 90 and histidine 210 participate, in a proposed catalytic mechanism for beta-lactam hydrolysis.
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<StructureSection load='2fu7' size='340' side='right'caption='[[2fu7]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2fu7]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Stenotrophomonas_maltophilia Stenotrophomonas maltophilia]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FU7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FU7 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]] 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=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PHN:1,10-PHENANTHROLINE'>PHN</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=2fu7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fu7 OCA], [https://pdbe.org/2fu7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fu7 RCSB], [https://www.ebi.ac.uk/pdbsum/2fu7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fu7 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/BLA1_STEMA BLA1_STEMA] Has a high activity against imipenem.
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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/fu/2fu7_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=2fu7 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 mechanism by which bacteria can escape the action of beta-lactam antibiotics is the production of metallo-beta-lactamases. Inhibition of these enzymes should restore the action of these widely used antibiotics. The tetrameric enzyme L1 from Stenotrophomonas maltophilia was used as a model system to determine a series of high-resolution crystal structures of apo, mono and bi-metal substituted proteins as well as protein-inhibitor complexes. Unexpectedly, although the apo structure revealed only few significant structural differences from the holo structure, some inhibitors were shown to induce amino acid side-chain rotations in the tightly packed active site. Moreover, one inhibitor employs a new binding mode in order to interact with the di-zinc center. This structural information could prove essential in the process of elucidation of the mode of interaction between a putative lead compound and metallo-beta-lactamases, one of the main steps in structure-based drug design.
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==About this Structure==
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Structural insights into the design of inhibitors for the L1 metallo-beta-lactamase from Stenotrophomonas maltophilia.,Nauton L, Kahn R, Garau G, Hernandez JF, Dideberg O J Mol Biol. 2008 Jan 4;375(1):257-69. Epub 2007 Oct 22. PMID:17999929<ref>PMID:17999929</ref>
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2FU7 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Stenotrophomonas_maltophilia Stenotrophomonas maltophilia] with CU, SO4, PHN and GOL as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [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] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2FU7 OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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The 3-D structure of a zinc metallo-beta-lactamase from Bacillus cereus reveals a new type of protein fold., Carfi A, Pares S, Duee E, Galleni M, Duez C, Frere JM, Dideberg O, EMBO J. 1995 Oct 16;14(20):4914-21. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=7588620 7588620]
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</div>
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[[Category: Beta-lactamase]]
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<div class="pdbe-citations 2fu7" style="background-color:#fffaf0;"></div>
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[[Category: Single protein]]
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[[Category: Stenotrophomonas maltophilia]]
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[[Category: Dideberg, O.]]
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[[Category: Garau, G.]]
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[[Category: Kahn, R.]]
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[[Category: Nauton, L.]]
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[[Category: CU]]
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[[Category: GOL]]
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[[Category: PHN]]
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[[Category: SO4]]
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[[Category: beta]]
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[[Category: hydrolase]]
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[[Category: lactamase]]
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[[Category: metallo]]
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[[Category: zn]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Nov 21 10:46:23 2007''
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==See Also==
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*[[Beta-lactamase 3D structures|Beta-lactamase 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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[[Category: Stenotrophomonas maltophilia]]
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[[Category: Dideberg O]]
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[[Category: Garau G]]
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[[Category: Kahn R]]
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[[Category: Nauton L]]

Current revision

Zinc-beta-lactamase L1 from stenotrophomonas maltophilia (Cu-substituted form)

PDB ID 2fu7

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