Article
Physiological evidence for an interaction between helices II and XI in the melibiose carrier of Escherichia coli.
Biochimica et biophysica acta - 9 Feb 2001
Franco P J, Jena A B, Wilson T H
Abstract excerpt
The melibiose carrier from Escherichia coli is a cation-substrate cotransporter that catalyzes the accumulation of galactosides at the expense of H(+), Na(+), or Li(+) electrochemical gradients. Charged residues on transmembrane domains in the amino-terminal portion of this carrier play an important role in the recognition of cations, while the carboxyl portion of the protein seems to be important for sugar...
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