Using varied and complementary analytical technics, we have characterized biochemically two molecular forms for nuclease of Staphylococcus aureus (Foggi strain). The results obtained show clearly that nuclease I differs from nuclease II by the loss of one dipeptide beside N. terminal. This loss doesn’t seem affect the enzymatic activity since the two forms have the same specific activities towards the DNA and the RNA. Several hypothesis have been advanced to render an account of the whole of results.
N. Marrakchi-Mzid, P. Cozzone
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