title: The purification of protease IV of E. coli and the demonstration that it is an endoproteolytic enzyme.
mesh_terms: D001426:Bacterial Proteins / Q000302:isolation & purification; D002364:Caseins; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000201:enzymology*; D006868:Hydrolysis; D008970:Molecular Weight; D010447:Peptide Hydrolases / Q000302:isolation & purification*
chemical_list: D001426:Bacterial Proteins; D002364:Caseins; D010447:Peptide Hydrolases; C030732:protease IV