GMP and IMP Are Competitive Inhibitors of CMY-10, an Extended-Spectrum Class C β-Lactamase.

Antimicrob Agents Chemother

Department of Chemistry & Nano Science, Ewha Womans University, Seoul, Republic of Korea

Published: May 2017

Nucleotides were effective in inhibiting the class C β-lactamase CMY-10. IMP was the most potent competitive inhibitor, with a value of 16.2 μM. The crystal structure of CMY-10 complexed with GMP or IMP revealed that nucleotides fit into the R2 subsite of the active site with a unique vertical binding mode where the phosphate group at one terminus is deeply bound in the subsite and the base at the other terminus faces the solvent.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5404520PMC
http://dx.doi.org/10.1128/AAC.00098-17DOI Listing

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