Biomedical subjects
Publications and source records attributed to E Zelinková.
By chromatography on phosphocellulose and Heparin-Sepharose the modification methylase M.Sau3239I was detected and partly purified from cells of Streptomyces aureofaciens 3239. Methylation by this enzyme protects DNA from cleavage by the restriction endonuclease R.Sau3239I. The enzyme catalyzes methylation of adenine to N-6-methyladenine in the 5'-CTCGmAG-3' recognition sequence.
Two strains of Streptomyces aureofaciens were found to contain restriction endodeoxynucleases; S. aureofaciens IKA 18/4 contains Sau I which splits lambda DNA into three fragments, S. aureofaciens IKA 22201 Sau Ii which splits lambda DNA into more than 15 fragments.
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