抄録
Microbial hydrolysis of pepsidines was studied by using bacteria. A strain of bacteria which has been isolated from soil and identified as Bacillus pumilus, could release successively N-terminal acetyl moiety and valine from pepsidine C. The residual peptides thus obtained were crystallized and identified as desacyl-pepsidine and desacylvalyl-pepsidine. The correlation between their structures and pepsin inhibitory activities was also studied.
