Coordinate regulation of adenylate cyclase and carbohydrate permeases by the phosphoenolpyruvate:sugar phosphotransferase system in Salmonella typhimurium - PubMed (original) (raw)

. 1975 Sep 10;250(17):7078-80.

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Coordinate regulation of adenylate cyclase and carbohydrate permeases by the phosphoenolpyruvate:sugar phosphotransferase system in Salmonella typhimurium

M H Saier Jr et al. J Biol Chem. 1975.

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Abstract

Adenylate cyclase (EC 4.6.1.1) and several carbohydrate permeases are inhibited by D-glucose and other substrates of the phosphoenolpyruvate:sugar phosphotransferase system. These activities are coordinately altered by sugar substrates of the phosphotransferase system in a variety of bacterial strains which contain differing cellular levels of the protein components of the phosphotransferase system: Enzyme I, a small heat-stable protein, and Enzyme II. It is suggested that the activities of adenylate cyclase and the permease proteins are subject to allosteric regulation and that the allosteric effector is a regulatory protein which can be phosphorylated by the phosphotransferase system.

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