OXA-207, a novel OXA-24 variant with reduced catalytic efficiency against carbapenems in Acinetobacter pittii from Spain

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URI: http://hdl.handle.net/10902/7262
ISSN: 0066-4804
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Author
Cayô da Silva, Rodrigo; Merino Carballeira, María; Ruiz del Castillo, Belén; Cano García, María Eliecer; Calvo Montes, Jorge; Bou Arévalo, Germán; Martínez Martínez, LuisAutoridad Unican
Date
2014-08
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© American Society for Microbiology
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Antimicrobial Agents and Chemotherapy. 2014 Aug;58(8):4944-8
Publisher
American Society for Microbiology
Abstract:
A carbapenem-resistant Acinetobacter pittii strain carrying an OXA-24-like enzyme was isolated in northern Spain in 2008. Sequence analysis confirmed the presence of the novel bla(OXA-207) gene flanked by the site-specific XerC/XerD-like recombination binding sites and showing a unique Gly222Val substitution compared to OXA-24. Cloning and kinetic analysis showed that OXA-207 presents a reduction in the catalytic efficiency against carbapenems and a noticeable increase for oxacillin.
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