What question did this study set out to answer?

This research aims to sequence the genome of a CTX-M-5 variant-carrying Kluyvera ascorbata isolated from river water.

March 15, 2026Microbiology Resource Announcements1 citationsOpen Access

Draft genome sequence of CTX-M-5 variant-carrying Kluyvera ascorbata isolated from river water in Kumamoto, Japan

TYTakatoshi YamamotoKumamoto Health Science University CSChie ShitadaKumamoto Health Science University TKTatsuya KawaguchiKumamoto Health Science University

Puntos clave

This research aims to sequence the genome of a CTX-M-5 variant-carrying Kluyvera ascorbata isolated from river water.
Isolated strain KHSU-R5-7 from Shirakawa River in Kumamoto, Japan.
Conducted draft genome sequencing of the isolate.
Analyzed genes related to antimicrobial resistance.
Identified the presence of CTX-M-5 variant genes.
Demonstrated the occurrence of extended-spectrum β-lactamases in environmental settings.

Resumen

The genus Kluyvera is presumed to be the original source of blaCTX-M genes, which encode one of the most prevalent extended-spectrum β-lactamases. We report the draft genome sequence of Kluyvera ascorbata strain KHSU-R5-7, a CTX-M-5 variant producing isolate obtained from Shirakawa River in Kumamoto, Japan.

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