Add time:08/16/2019         Source:sciencedirect.com

Elongation factor Tu (EF-Tu) ofStreptoverticillium mobaraense, which produces pulvomycin, has been prepared to 90% purity. The purified protein differs significantly from the analogous protein found inEscherichia coli in molecular weight and antibiotic sensitivity. EF-Tu migrates in sodium dodecyl sulfate gel electrophoresis as a 46,000-dalton species. The protein is sensitive to pulvomycin, but highly resistant to kirromycin. EF-Tu fromStv. mobaraense exists in multiple forms as monomer and polymers. By contrast to the monomer, the polymers of EF-Tu are completely resistant to pulvomycin.

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