RT Journal Article T1 ZHO-1, an intrinsic MBL from the environmental Gram-negative species Zhongshania aliphaticivorans. A1 Kieffer, Nicolas A1 Guzman-Puche, Julia A1 Poirel, Laurent A1 Kang, Hyo Jung A1 Jeon, Che Ok A1 Nordmann, Patrice AB Our aim was to characterize the putative MBL of the environmental strain Zhongshania aliphaticivorans isolated from a marine environment. The putative MBL was identified in silico using the NCBI database. The β-lactamase gene was cloned into different Escherichia coli backgrounds. Kinetic parameters were determined using the purified enzyme. The enzyme named ZHO-1 shared 51% amino acid identity with the acquired class B carbapenemases IMP-1, KHM-1 and DIM-1. Expression of the blaZHO-1 gene in a susceptible E. coli resulted in a carbapenemase phenotype. Kinetic parameters determined from purified ZHO-1 enzyme showed that it had significant hydrolytic activity against most β-lactams including penicillins, cephalosporins and carbapenems, with the exception of aztreonam and cefepime. This study adds to the knowledge regarding environmental species as a reservoir of possible clinically relevant MBLs. PB Oxford University Press YR 2019 FD 2019-01-16 LK http://hdl.handle.net/10668/13586 UL http://hdl.handle.net/10668/13586 LA en NO Kieffer N, Guzmán-Puche J, Poirel L, Kang HJ, Jeon CO, Nordmann P. ZHO-1, an intrinsic MBL from the environmental Gram-negative species Zhongshania aliphaticivorans. J Antimicrob Chemother. 2019 Jun 1;74(6):1568-1571 DS RISalud RD Apr 8, 2025