Substrate specifcity of alkaline protease from alkaliphilic feather-degrading Nesterenkonia sp AL20
The substrate specificity of an alkaline protease, produced by Nesterenkonia sp. AL20 grown on chicken feather as the nutrient source, was assessed using oxidized insulin B-chain and derivatized peptide substrates. The initial cleavage of the. insulin chain was determined to be at Tyr(16) -Leu(17) and Tyr(26) -Thr(27), followed by Gln(4)-His(5), Phe(25)-Tyr(26) and Leu(15)-Tyr(16) bonds. An additi