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Detection of a variant metallo-beta-lactamase, IMP-10, from two unrelated strains of Pseudomonas aeruginosa and an alcaligenes xylosoxidans strain.

ABSTRACT: The gene bla(IMP-10) of a variant metallo-beta-lactamase, IMP-10, had a single base replacement of G by T at nucleotide 145, which led to an amino acid alteration of Val49 to Phe compared to the IMP-1 enzyme, indicating that IMP-10 was a point mutation derivative of IMP-1. Highly purified enzymes revealed that IMP-10 was different from IMP-1 in its extremely low hydrolyzing activities for penicillins, such as benzylpenicillin, ampicillin, and piperacillin.

SUBMITTER: Iyobe S

PROVIDER: S-EPMC127220 | biostudies-literature | 2002 Jun

REPOSITORIES: biostudies-literature

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Detection of a variant metallo-beta-lactamase, IMP-10, from two unrelated strains of Pseudomonas aeruginosa and an alcaligenes xylosoxidans strain.

Iyobe Shizuko S Kusadokoro Haruko H Takahashi Ayako A Yomoda Sachie S Okubo Toyoji T Nakamura Akio A O'Hara Koji K

Antimicrobial agents and chemotherapy 20020601 6

The gene bla(IMP-10) of a variant metallo-beta-lactamase, IMP-10, had a single base replacement of G by T at nucleotide 145, which led to an amino acid alteration of Val49 to Phe compared to the IMP-1 enzyme, indicating that IMP-10 was a point mutation derivative of IMP-1. Highly purified enzymes revealed that IMP-10 was different from IMP-1 in its extremely low hydrolyzing activities for penicillins, such as benzylpenicillin, ampicillin, and piperacillin. ...[more]

PMID: 12019129

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IMP-29, a novel IMP-type metallo-β-lactamase in Pseudomonas aeruginosa.

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