ID 3.4.21.66 DE thermitase. AN thermophilic Streptomyces serine protease. CA Hydrolysis of proteins, including collagen. CC -!- From Thermoactinomyces vulgaris containing a single Cys, near the CC active site His, and inhibited by p-mercuribenzoate. CC -!- The N-terminal extension of the polypeptide chain relative to CC subtilisin contributes to calcium-binding and the high CC thermostability. CC -!- The amino acid composition and properties of the thermostable enzyme CC from Streptomyces rectus var. proteolyticus are closely similar. CC -!- Belongs to peptidase family S8. CC -!- Formerly EC 3.4.4.16. DR P04072, THET_THEVU ; //