Wikipedia
Streptopain
Streptopain (, Streptococcus peptidase A, streptococcal cysteine proteinase, Streptococcus protease) is an enzyme. This enzyme catalyses the following chemical reaction
Preferential cleavage with hydrophobic residues at P2, P1 and P1'This enzyme is isolated from the bacterium, group A Streptococcus.