Biochemical characteristics of extended broad spectrum beta-lactamases.


Extended broad spectrum beta-lactamases such as TEM-3 (CTX-1), TEM-5 (CAZ-1), TEM-10 and RHH-1 were purified and found to have lower specific activities than the TEM-1 or TEM-2 beta-lactamases. Total hydrolytic activity in crude extracts was also lower for the extended broad spectrum enzymes. These beta-lactamases hydrolyzed not only penicillins such as… (More)


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