Article
Analysis of the importance of the metallo-beta-lactamase active site loop in substrate binding and catalysis.
Chemistry & biology - 1 Apr 2003
Moali Catherine, Anne Christine, Lamotte-Brasseur Josette, Groslambert Sylvie, Devreese Bart, Van Beeumen Jozef, Galleni Moreno, Frère Jean Marie
Abstract excerpt
The role of the mobile loop comprising residues 60-66 in metallo-beta-lactamases has been studied by site-directed mutagenesis, determination of kinetic parameters for six substrates and two inhibitors, pre-steady-state characterization of the interaction with chromogenic nitrocefin, and molecular modeling. The W64A mutation was performed in IMP-1 and BcII (after replacement of the BcII 60-66 peptide by that of...
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