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Comparative Study
. 1982 Jan;128(1):155-9.
doi: 10.1099/00221287-128-1-155.

Isolation and properties of an inducible and a constitutive beta-lactamase from Pseudomonas aeruginosa

M Berks, K Redhead, E P Abraham
Comparative Study

Isolation and properties of an inducible and a constitutive beta-lactamase from Pseudomonas aeruginosa

M Berks et al. J Gen Microbiol. 1982 Jan.

Abstract

The inducible beta-lactamase from Pseudomonas aeruginosa NCTC 8203 and the constitutive beta-lactamase from strain 1822 S/H have been isolated and compared. These two enzymes are apparently periplasmic since they are released by freezing and thawing. They resemble each other closely in their molecular weights, amino acid composition, isoelectric points and electrophoretic mobility as well as in their catalytic properties, and they may be identical. Neither enzyme contains a free thiol group.

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