Comparison of β-lactamase II from <i>Bacillus cereus</i> 569/H/9 with a β-lactamase from <i>Bacillus cereus</i> 5/B/6

Abstract

A mutant of Bacillus cereus 5/B, strain 5/B/6, produces a beta-lactamase II-like enzyme but no beta-lactamase I. Beta-lactamases II and II 5/B/6 appear to show a high degree of homology, but there are significant differences in their enzymic properties.