[New isolation procedure for swine kidney acylase. Kinetics of Co2+, Mn2+, Ni2+ and Cd2+-enzymes].

A new procedure for the isolation of highly purified acylamino acid amidohydrolase from hog kidney is described which allows the preparation of the enzyme with a recovery of about 45%, a 200 fold purification and a spec. activity of 350-500 U. The essential Zn2+ of the enzyme was exchanged for Co2+, Ni2+, Mn2+ and Cd2+, and the kinetic parameters KM, kcat and kcat/KM of the different enzyme species for a series of acetyl-L-amino acids were determined.