Structural analysis of the Asn152Gly mutant of P99 cephalosporinase.

Abstract excerpt

P99 cephalosporinase is a class C β-lactamase that is responsible in part for the widespread bacterial resistance to β-lactam antibiotics. Mutations of the conserved active-site residue Asn152 of the enzyme have been shown to alter β-lactam substrate specificity in vivo. Mutation of Asn152 to a g...

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