several peptides containing either of the sequences -phe ( no2 ) -trp- and -phe ( no2 ) -phe- and an uncharged hydrophilic group were synthesized , and the steady-state kinetics of their hydrolysis by pig pepsin ( ec 3.4.23.1 ) and chicken liver cathepsin d ( ec 3.4.23.5 ) were determined .
C0020291
hydrolysis
C0007427
cathepsin d