CITRATE TRANSPORT SYSTEM OF STREPTOCOCCUS DIACETILACTIS

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Harvey, R. J. (University of California, Davis) and E. B. Collins. Citrate transport system of Streptococcus diacetilactis. J. Bacteriol. 83:1005–1009. 1962.—The uptake of citrate by Streptococcus diacetilactis is mediated by a transport system that was distinguished from passive diffusion by inducibility and kinetics of uptake. In these characteristics the system is similar to the β-galactoside permease of Escherichia coli. The citrate transport system of S. diacetilactis differs from β-galactoside permease by requiring metabolic energy for operation under conditions that do not permit intracellular accumulation of the substance transported.

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