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Article

NagZ-dependent and NagZ-independent mechanisms for β-lactamase expression in Stenotrophomonas maltophilia.

Antimicrobial agents and chemotherapy - 1 Apr 2012

Huang Yi-Wei, Hu Rouh-Mei, Lin Cheng-Wen, Chung Tung-Ching, Yang Tsuey-Ching

Abstract excerpt

β-N-Acetylglucosaminidase (NagZ), encoded by the nagZ gene, is a critical enzyme for basal-level ampC derepression (ampC expression in the absence of β-lactam challenge) in ampD and dacB mutants of Pseudomonas aeruginosa. Three mutants with a phenotype of basal-level L1 and L2 β-lactamase derepre...

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Identifiers

PMID: 22252801
DOI: 10.1128/AAC.05645-11
PMCID: PMC3318340

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 4 Sept 2026. Prepared record publication-22252801-2026-09-04.2. Manifest publication-graph-cohort-2026-09-04.2.

Source receipt: PubMed via Helena Literature Corpus, retrieved 4 Sept 2026.

Related research

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NagZ-dependent and NagZ-independent mechanisms for β-lactamase expression in Stenotrophomonas maltophilia.PMID 22252801Read ↗

Complex Regulation Pathways of AmpC-Mediated β-Lactam Resistance in Enterobacter cloacae Complex.Semantic proximity Read ↗

Role of Low-Molecular-Mass Penicillin-Binding Proteins, NagZ and AmpR in AmpC β-lactamase Regulation of Yersinia enterocolitica.Semantic proximity Read ↗

Inactivation of mrcA gene derepresses the basal-level expression of L1 and L2 β-lactamases in Stenotrophomonas maltophilia.Semantic proximity Read ↗

Cefazolin and imipenem enhance AmpC expression and resistance in NagZ-dependent manner in Enterobacter cloacae complexSemantic proximity Read ↗

AmpN-AmpG operon is essential for expression of L1 and L2 beta-lactamases in Stenotrophomonas maltophilia.Semantic proximity Read ↗

Cefazolin and Imipenem Enhance AmpC Expression and Resistance in NagZ-Dependent Manner in Enterobacter CloacaeSemantic proximity Read ↗

NagZ inactivation prevents and reverts beta-lactam resistance, driven by AmpD and PBP 4 mutations, in Pseudomonas aeruginosa.Semantic proximity Read ↗

AmpD is required for regulation of expression of NmcA, a carbapenem-hydrolyzing beta-lactamase of Enterobacter cloacae.Semantic proximity Read ↗

Induction of L1 and L2 beta-lactamase production in Stenotrophomonas maltophilia is dependent on an AmpR-type regulator.Semantic proximity Read ↗

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Inactivation of the ampD gene in Pseudomonas aeruginosa leads to moderate-basal-level and hyperinducible AmpC beta-lactamase expression.Semantic proximity Read ↗

A potential space-making role in cell wall biogenesis for SltB1and DacB revealed by a beta-lactamase induction phenotype in Pseudomonas aeruginosa.Semantic proximity Read ↗

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