1m2x: Difference between revisions
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'''Crystal Structure of the metallo-beta-lactamase BlaB of Chryseobacterium meningosepticum in complex with the inhibitor D-captopril''' | {{Structure | ||
|PDB= 1m2x |SIZE=350|CAPTION= <scene name='initialview01'>1m2x</scene>, resolution 1.5Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>, <scene name='pdbligand=MCO:1-(3-MERCAPTO-2-METHYL-PROPIONYL)-PYRROLIDINE-2-CARBOXYLIC+ACID'>MCO</scene> and <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene> | |||
|ACTIVITY= [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] | |||
|GENE= blaB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=238 Elizabethkingia meningoseptica]) | |||
}} | |||
'''Crystal Structure of the metallo-beta-lactamase BlaB of Chryseobacterium meningosepticum in complex with the inhibitor D-captopril''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1M2X is a [ | 1M2X is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Elizabethkingia_meningoseptica Elizabethkingia meningoseptica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M2X OCA]. | ||
==Reference== | ==Reference== | ||
The 1.5-A structure of Chryseobacterium meningosepticum zinc beta-lactamase in complex with the inhibitor, D-captopril., Garcia-Saez I, Hopkins J, Papamicael C, Franceschini N, Amicosante G, Rossolini GM, Galleni M, Frere JM, Dideberg O, J Biol Chem. 2003 Jun 27;278(26):23868-73. Epub 2003 Apr 8. PMID:[http:// | The 1.5-A structure of Chryseobacterium meningosepticum zinc beta-lactamase in complex with the inhibitor, D-captopril., Garcia-Saez I, Hopkins J, Papamicael C, Franceschini N, Amicosante G, Rossolini GM, Galleni M, Frere JM, Dideberg O, J Biol Chem. 2003 Jun 27;278(26):23868-73. Epub 2003 Apr 8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12684522 12684522] | ||
[[Category: Beta-lactamase]] | [[Category: Beta-lactamase]] | ||
[[Category: Elizabethkingia meningoseptica]] | [[Category: Elizabethkingia meningoseptica]] | ||
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[[Category: alpha-beta/beta-alpha fold.]] | [[Category: alpha-beta/beta-alpha fold.]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:38:15 2008'' | ||
Revision as of 10:38, 20 March 2008
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| 1m2x, resolution 1.5Å | |||||||||||||
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| Ligands: | NA, ZN, MCO and GOL | ||||||||||||
| Gene: | blaB (Elizabethkingia meningoseptica) | ||||||||||||
| Activity: | Beta-lactamase, with EC number 3.5.2.6 | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Crystal Structure of the metallo-beta-lactamase BlaB of Chryseobacterium meningosepticum in complex with the inhibitor D-captopril
Overview
The crystal structure of the class-B beta-lactamase, BlaB, from the pathogenic bacterium, Chryseobacterium meningosepticum, in complex with the inhibitor, d-captopril, has been solved at 1.5-A resolution. The enzyme has the typical alphabeta/betaalpha metallo-beta-lactamase fold and the characteristic two metal binding sites of members of the subclass B1, in which two Zn2+ ions were identified. d-Captopril, a diastereoisomer of the commercial drug, captopril, acts as an inhibitor by displacing the catalytic hydroxyl ion required for antibiotic hydrolysis and intercalating its sulfhydryl group between the two Zn2+ ions. Interestingly, d-captopril is located on one side of the active site cleft. The x-ray structure of the complex of the closely related enzyme, IMP-1, with a mercaptocarboxylate inhibitor, which also contains a sulfhydryl group bound to the two Zn2+ ions, shows the ligand to be located on the opposite side of the active site cleft. A molecule generated by fusion of these two inhibitors would cover the entire cleft, suggesting an interesting approach to the design of highly specific inhibitors.
About this Structure
1M2X is a Single protein structure of sequence from Elizabethkingia meningoseptica. Full crystallographic information is available from OCA.
Reference
The 1.5-A structure of Chryseobacterium meningosepticum zinc beta-lactamase in complex with the inhibitor, D-captopril., Garcia-Saez I, Hopkins J, Papamicael C, Franceschini N, Amicosante G, Rossolini GM, Galleni M, Frere JM, Dideberg O, J Biol Chem. 2003 Jun 27;278(26):23868-73. Epub 2003 Apr 8. PMID:12684522
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