Abstract
Bacteriocin JF246 has been purified from mitomycin C-induced Serratia marcescens cells by salt extraction, ammonium sulfate fractionation, and chromatography on QAE-Sephadex and SP-Sephadex. The purified material is homogeneous on polyacrylamide gel electrophoresis in the presence of 2% sodium dodecyl sulfate or 6 m urea. In the absence of these agents, the bacteriocin associates into aggregates which can be dissociated with 0.4 m NaCl. The bacteriocin is probably composed of a single subunit with a molecular weight of 64,000 daltons. Analytical studies show the bacteriocin to be essentially protein in nature containing less than one residue of glucose or phosphorus per 64,000 daltons.
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Selected References
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