2bmi
From Proteopedia
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| - | [[Image:2bmi.jpg|left|200px]] | + | [[Image:2bmi.jpg|left|200px]] |
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| - | '''METALLO-BETA-LACTAMASE''' | + | {{Structure |
| + | |PDB= 2bmi |SIZE=350|CAPTION= <scene name='initialview01'>2bmi</scene>, resolution 2.00Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> and <scene name='pdbligand=NA:SODIUM ION'>NA</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= CCRA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=817 Bacteroides fragilis]) | ||
| + | }} | ||
| + | |||
| + | '''METALLO-BETA-LACTAMASE''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2BMI is a [ | + | 2BMI is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bacteroides_fragilis Bacteroides fragilis]. This structure supersedes the now removed PDB entry 1BMI. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BMI OCA]. |
==Reference== | ==Reference== | ||
| - | X-ray structure of the ZnII beta-lactamase from Bacteroides fragilis in an orthorhombic crystal form., Carfi A, Duee E, Paul-Soto R, Galleni M, Frere JM, Dideberg O, Acta Crystallogr D Biol Crystallogr. 1998 Jan 1;54(Pt 1):45-57. PMID:[http:// | + | X-ray structure of the ZnII beta-lactamase from Bacteroides fragilis in an orthorhombic crystal form., Carfi A, Duee E, Paul-Soto R, Galleni M, Frere JM, Dideberg O, Acta Crystallogr D Biol Crystallogr. 1998 Jan 1;54(Pt 1):45-57. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9761816 9761816] |
[[Category: Bacteroides fragilis]] | [[Category: Bacteroides fragilis]] | ||
[[Category: Beta-lactamase]] | [[Category: Beta-lactamase]] | ||
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[[Category: zinc]] | [[Category: zinc]] | ||
| - | ''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 16:04:01 2008'' |
Revision as of 14:04, 20 March 2008
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| , resolution 2.00Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | and | ||||||
| Gene: | CCRA (Bacteroides fragilis) | ||||||
| Activity: | Beta-lactamase, with EC number 3.5.2.6 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
METALLO-BETA-LACTAMASE
Overview
beta-Lactamases are extracellular or periplasmic bacterial enzymes which confer resistance to beta-lactam antibiotics. On the basis of their catalytic mechanisms, they can be divided into two major groups: active-site serine enzymes (classes A, C and D) and the ZnII enzymes (class B). The first crystal structure of a class B enzyme, the metallo-beta-lactamase from Bacillus cereus, has been solved at 2.5 A resolution [Carfi, Pares, Duee, Galleni, Duez, Frere & Dideberg (1995). EMBO J. 14, 4914-4921]. Recently, the crystal structure of the metallo-beta-lactamase from Bacteroides fragilis has been determined in a tetragonal space group [Concha, Rasmussen, Bush & Herzberg (1996). Structure, 4, 823-836]. The structure of the metallo-beta-lactamase from B. fragilis in an orthorhombic crystal form at 2.0 A resolution is reported here. The final crystallographic R is 0.196 for all the 32501 observed reflections in the range 10-2.0 A. The refined model includes 458 residues, 437 water molecules, four zinc and two sodium ions. These structures are discussed with reference to Zn binding and activity. A catalytic mechanism is proposed which is coherent with metallo-beta-lactamases being active with either one Zn ion (as in Aeromonas hydrophila) or two Zn ions (as in B. fragilis) bound to the protein.
About this Structure
2BMI is a Single protein structure of sequence from Bacteroides fragilis. This structure supersedes the now removed PDB entry 1BMI. Full crystallographic information is available from OCA.
Reference
X-ray structure of the ZnII beta-lactamase from Bacteroides fragilis in an orthorhombic crystal form., Carfi A, Duee E, Paul-Soto R, Galleni M, Frere JM, Dideberg O, Acta Crystallogr D Biol Crystallogr. 1998 Jan 1;54(Pt 1):45-57. PMID:9761816
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