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Title: Purification and partial characterization of two proteinases from Clostridium butyricum M 55. Author: Ciborowski P, Hryniewicz W, Jeljaszewicz J. Journal: Zentralbl Bakteriol Mikrobiol Hyg A; 1988 Apr; 268(2):180-92. PubMed ID: 3293333. Abstract: Clostridium butyricum M55 proteinases were purified by application of a multistep procedure involving ethanol precipitation, DEAE cellulose chromatography and molecular sieving. The purified enzymes obtained were called proteinase I and proteinase II. They appeared to be homogeneous when examined by molecular sieving and polyacrylamide gel electrophoresis. The highly purified proteinases were studied for their physico-chemical properties. The influences of pH, temperature, ionic strength and amino acids composition were investigated. The effects of metal ions and of protein-structure-modifying agents support views suggesting the character of these enzymes.[Abstract] [Full Text] [Related] [New Search]