[Affinity chromatography of subtilisin on a sorbent with epsilon-aminocapronyl-alanyl-alanyl-D-leucylamide. Detection of a serine protease with unusual properties].

A biospecific sorbent obtained by attachment of epsilon-aminocapronyl-L-alanyl-L-alanyl-D-leucylamide to CNBr-activated Sepharose 4B has been used for affinity chromatography of various samples of subtilisin BPN', e.g. subtilisin A ("Serva"), Nagarse, A-50.