Sugar transport by the bacterial phosphotransferase system. Characterization of the sulfhydryl groups and site-specific labeling of enzyme I.

Abstract

Enzyme I is the first protein of the phospho transfer sequence in the bacterial phosphoenolpyruvate:glycose phosphotransferase system. This protein exhibits a temperature-dependent monomer/dimer equilibrium. The nucleotide sequence of Escherichia coli ptsI indicates four -SH residues per subunit (Saffen, D. W., Presper, K. A., Doering, T. L., and Roseman, S… (More)

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