The interactions between clavulanate and three class C enzymes have be
en studied in detail. In all cases, the reactions followed branched pa
thways where 25-150 turnovers occurred before inactivation was complet
ed. Reactivation rates were quite low. The poor efficiency of clavulan
ate as a class C inactivator appeared to rest upon a very slow acylati
on of the protein, and of a relatively high turnover rate.