Abstract
ω-N-Acyl-diamino acids have been tested as substrates for ε-lysine acylase from animal sources. Chicken and pigeon kidney enzyme preparations hydrolyzed derivatives of lysine homologues as well as of lysine, the best substrates tested being ε-N-propionyl-lysine and ε-N-propionyl-ornithine. A modified procedure for purifying the enzyme from rat and hog kidney is presented. Some of its properties are different from those previously reported.

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