Characterization of a ß-lactamase produced by Pseudomonas paucimobilis Corkill, John E. and Hart, Charles A. and McLennan, Alexander G. and Aspinall, Stephen,, 137, 1425-1429 (1991), doi = https://doi.org/10.1099/00221287-137-6-1425, publicationName = Microbiology Society, issn = 1350-0872, abstract= Summary: A novel β-lactamase enzyme produced by a strain of Pseudomonas paucimobilis is described. The enzyme differs from other recorded β-lactamases from Gram-negative aerobic bacteria. It was constitutive, and had the characteristics of a penicillinase. One single band of β-lactamase activity at pI 4.6 was seen on iso-electric focusing. The enzyme had a molecular mass of 30 kDa. The β-lactamase was strongly inhibited by tazobactam, sulbactam and clavulanic acid but not by the thiol residue inhibitors p-chloromercuribenzoate and p-chloromercuriphenylsulphonic acid, or by metallo-enzyme inhibitors. Plasmid DNA was not demonstrable, suggesting that the enzyme was chromosomally encoded., language=, type=