Abstract
Labelling the beta-lactamase of Enterobacter cloacae P99 with a poor substrate or a mechanism-based inactivator points to an active-site serine residue in a sequence closely resembling that of the ampC beta-lactamase. These results establish the P99 enzyme as a class-C beta-lactamase, and the concurrence of the two approaches helps to confirm the reliability of determining active-site sequences with the aid of mechanism-based inactivators.
Full text
PDFSelected References
These references are in PubMed. This may not be the complete list of references from this article.
- Ambler R. P. The structure of beta-lactamases. Philos Trans R Soc Lond B Biol Sci. 1980 May 16;289(1036):321–331. doi: 10.1098/rstb.1980.0049. [DOI] [PubMed] [Google Scholar]
- Bruton C. J., Hartley B. S. Chemical studies on methionyl-tRNA synthetase from Escherichia coli. J Mol Biol. 1970 Sep 14;52(2):165–178. doi: 10.1016/0022-2836(70)90023-9. [DOI] [PubMed] [Google Scholar]
- Campbell D. G., Gagnon J., Reid K. B., Williams A. F. Rat brain Thy-1 glycoprotein. The amino acid sequence, disulphide bonds and an unusual hydrophobic region. Biochem J. 1981 Apr 1;195(1):15–30. doi: 10.1042/bj1950015. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cartwright S. J., Waley S. G. Purification of beta-lactamases by affinity chromatography on phenylboronic acid-agarose. Biochem J. 1984 Jul 15;221(2):505–512. doi: 10.1042/bj2210505. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cartwright S. J., Waley S. G. beta-Lactamase inhibitors. Med Res Rev. 1983 Oct-Dec;3(4):341–382. doi: 10.1002/med.2610030402. [DOI] [PubMed] [Google Scholar]
- Charlier P., Dideberg O., Frère J. M., Moews P. C., Knox J. R. Crystallographic data for the beta-lactamase from Enterobacter cloacae P99. J Mol Biol. 1983 Dec 5;171(2):237–238. doi: 10.1016/s0022-2836(83)80358-1. [DOI] [PubMed] [Google Scholar]
- Cohen S. A., Pratt R. F. Inactivation of Bacillus cereus beta-lactamase I by 6 beta-bromopencillanic acid: mechanism. Biochemistry. 1980 Aug 19;19(17):3996–4003. doi: 10.1021/bi00558a017. [DOI] [PubMed] [Google Scholar]
- Fisher J., Belasco J. G., Khosla S., Knowles J. R. beta-Lactamase proceeds via an acyl-enzyme intermediate. Interaction of the Escherichia coli RTEM enzyme with cefoxitin. Biochemistry. 1980 Jun 24;19(13):2895–2901. doi: 10.1021/bi00554a012. [DOI] [PubMed] [Google Scholar]
- Fisher J., Charnas R. L., Bradley S. M., Knowles J. R. Inactivation of the RTEM beta-lactamase from Escherichia coli. Interaction of penam sulfones with enzyme. Biochemistry. 1981 May 12;20(10):2726–2731. doi: 10.1021/bi00513a004. [DOI] [PubMed] [Google Scholar]
- Hewick R. M., Hunkapiller M. W., Hood L. E., Dreyer W. J. A gas-liquid solid phase peptide and protein sequenator. J Biol Chem. 1981 Aug 10;256(15):7990–7997. [PubMed] [Google Scholar]
- Jaurin B., Grundström T. ampC cephalosporinase of Escherichia coli K-12 has a different evolutionary origin from that of beta-lactamases of the penicillinase type. Proc Natl Acad Sci U S A. 1981 Aug;78(8):4897–4901. doi: 10.1073/pnas.78.8.4897. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Knott-Hunziker V., Orlek B. S., Sammes P. G., Waley S. G. 6 beta-Bromopenicillanic acid inactivates beta-lactamase I. Biochem J. 1979 Jan 1;177(1):365–367. doi: 10.1042/bj1770365. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Knott-Hunziker V., Orlek B. S., Sammes P. G., Waley S. G. Kinetics of inactivation of beta-lactamase I by 6 beta-bromopenicillanic acid. Biochem J. 1980 Jun 1;187(3):797–802. doi: 10.1042/bj1870797. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Knott-Hunziker V., Petursson S., Jayatilake G. S., Waley S. G., Jaurin B., Grundström T. Active sites of beta-lactamases. The chromosomal beta-lactamases of Pseudomonas aeruginosa and Escherichia coli. Biochem J. 1982 Mar 1;201(3):621–627. doi: 10.1042/bj2010621. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Knott-Hunziker V., Petursson S., Waley S. G., Jaurin B., Grundström T. The acyl-enzyme mechanism of beta-lactamase action. The evidence for class C Beta-lactamases. Biochem J. 1982 Nov 1;207(2):315–322. doi: 10.1042/bj2070315. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Offord R. E. The use of logarithmic plots of electrophoretic mobilities of peptides. Methods Enzymol. 1977;47:51–69. doi: 10.1016/0076-6879(77)47008-3. [DOI] [PubMed] [Google Scholar]
- Ross G. W. Beta-lactamase (Enterobacter species). Methods Enzymol. 1975;43:678–687. doi: 10.1016/0076-6879(75)43133-0. [DOI] [PubMed] [Google Scholar]