The aminoacylase characteristics of bioengineered bacterium 1016 were investigated. The results showed that the reaction adhered to Michcelis-Menten equation and there was no substrate inhibition when substrate concentration was not higher than 0.5mol.L -. At 37℃, kinetic constants Km and Vm were 0.048mmol.L - and 2.178 mmol.L -h - respectively. At 55℃,Km was 0.037mmol.L - and Vm was 2.558mmol.L -h -. The optimal substrate and temperature for aminoacylase were N-AC-D,L-Met and 55℃ respectively. The ...