N-Terminal homology in three cysteinyl proteases from Papaya latex.
Sequences to residue 17 have been determined for the three Papaya cysteinyl proteases, chymopapain and papaya peptidase A and B. Extensive homologies were found for these three enzymes and with papain and bromelain. These results suggest that the five sulphydryl enzymes discussed derive from a common ancestral gene.
D000595:Amino Acid Sequence; D001963:Bromelains; D002917:Chymopapain; D003545:Cysteine; D010447:Peptide Hydrolases; D010944:Plants / Q000201:enzymology*
D001963:Bromelains; D010447:Peptide Hydrolases; D002917:Chymopapain; D003545:Cysteine