SCHAFFER, N K Serine phosphoric acid from diisopropylphosphoryl chymotrypsin. [electronic resource] - The Journal of biological chemistry May 1953 - 67-76 p. digital Publication Type: Journal Article ISSN: 0021-9258 Subjects--Topical Terms: ChymotrypsinEndopeptidasesHydrolasesIsoflurophatePeptide HydrolasesPhosphoric AcidsSerine