Penicillinase Plasmid Dna from Staphylococcus a Ureus* By

Abstract

-A penicillinase plasmid from Staphylococcus aureus and three of its derivatives, all previously identified as extrachromosomal genetic elements, have been isolated in high yield as circular duplex DNA molecules. The wildtype plasmid was found by contour-length measurements of electron micrographs to have a molecular weight of 18.6 X 106 daltons. Two… (More)

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