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1a7t

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Revision as of 10:46, 15 November 2017

METALLO-BETA-LACTAMASE WITH MES

Structural highlights

1a7t is a 2 chain structure with sequence from "bacteroides_inaequalis"_eggerth_and_gagnon_1933 "bacteroides inaequalis" eggerth and gagnon 1933. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Gene:	CCRA ("Bacteroides inaequalis" Eggerth and Gagnon 1933)
Activity:	Beta-lactamase, with EC number 3.5.2.6
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[BLAB_BACFG] Can hydrolyze carbapenem compounds.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

As part of a structure-aided effort to design clinically useful inhibitors of metallo-beta-lactamases, the X-ray crystal structure of a complex between the metallo-beta-lactamase from Bacteroides fragilis and 4-morpholinoethanesulfonic acid (MES) has been determined and a model for the structure has been refined to a crystallographic R-factor of 0.151 for data between 10.0- and 1.85-A resolution. Although the binding of MES was an adventitious result of the use of MES as a buffer in the crystallization mixture, MES was subsequently shown to be a competitive inhibitor of the enzyme, with a Ki of 23 +/- 5 mM. MES binds in the same fashion to both of the molecules in the crystallographic asymmetric unit; both direct and solvent-mediated hydrogen bonds to the protein and to the binuclear zinc cluster are observed, involving the oxygens of the sulfonic acid group and the nitrogen of the morpholino ring. In addition, there are hydrophobic interactions between the morpholino ring and residues in the flexible beta-strand of the enzyme between residues 26 and 36. Comparison of this structure with the previously reported unliganded structures of the same enzyme [Concha, N. O., Rasmussen, B. A., Bush, K., and Herzberg, O. (1996) Structure 4, 823-836; Carfi, A., Duee, E., Paul-Soto, R., Galleni, M., Frere, J. -M., and Dideberg, O. (1998) Acta Crystallogr. D54, 47-57] reveals that although the overall conservation of structure in the three different crystal lattices is very high, binding of MES is correlated with a significant change in the conformation of this beta-strand. The flexibility of this beta-strand will be an important consideration in the design of inhibitors of the metallo-beta-lactamases.

Unanticipated inhibition of the metallo-beta-lactamase from Bacteroides fragilis by 4-morpholineethanesulfonic acid (MES): a crystallographic study at 1.85-A resolution.,Fitzgerald PM, Wu JK, Toney JH Biochemistry. 1998 May 12;37(19):6791-800. PMID:9578564^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Fitzgerald PM, Wu JK, Toney JH. Unanticipated inhibition of the metallo-beta-lactamase from Bacteroides fragilis by 4-morpholineethanesulfonic acid (MES): a crystallographic study at 1.85-A resolution. Biochemistry. 1998 May 12;37(19):6791-800. PMID:9578564 doi:10.1021/bi9730339

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1a7t"

@@ Line 1: / Line 1: @@
 ==METALLO-BETA-LACTAMASE WITH MES==
 <StructureSection load='1a7t' size='340' side='right' caption='[[1a7t]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CCRA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=817 "Bacteroides inaequalis" Eggerth and Gagnon 1933])</td></tr>
 <tr id='activity'><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>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1a7t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a7t OCA], [http://pdbe.org/1a7t PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1a7t RCSB], [http://www.ebi.ac.uk/pdbsum/1a7t PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1a7t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a7t OCA], [http://pdbe.org/1a7t PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1a7t RCSB], [http://www.ebi.ac.uk/pdbsum/1a7t PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1a7t ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 29: / Line 30: @@
 </div>
 <div class="pdbe-citations 1a7t" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Beta-lactamase|Beta-lactamase]]
 == References ==
 <references/>
@@ Line 43: / Line 41: @@
 [[Category: Hydrolase]]
 [[Category: Metallo beta-lactamase]]
+[[Category: Zinc]]

1a7t

From Proteopedia

Revision as of 10:46, 15 November 2017

METALLO-BETA-LACTAMASE WITH MES

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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