Subtilisin BPN'
III. ISOLATION AND SEQUENCE OF 10 PEPTIDES FROM THE TRYPTIC DIGEST
Charles B. Kasper 1 and Emil L. Smith 1
From the
1 From the Department of Biological Chemistry, U.C.L.A School of Medicine, University of California, Los Angeles, California 90024
The diisopropylphosphoryl- derivative of subtilisin BPN' was denatured and digested with trypsin. The tryptic digest was resolved on Dowex 50-X2, and 10 peptides were obtained in pure form. The sequences of these peptides account for 178 of the 280 residues of the protein. The amino-terminal and carboxyl-terminal peptides were identified.
Submitted on March 21, 1966