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Lysine 319 interacts with both glutamic acid 269 and aspartic acid 240 in the lactose carrier of Escherichia coli.

The Journal of biological chemistry - 25 Sept 1993

Lee J I, Hwang P P, Wilson T H

Abstract excerpt

It is believed that there are several charged amino acid residues in membrane-spanning alpha-helices of the lactose carrier of Escherichia coli. Evidence has previously been presented for two different salt bridges in membrane-spanning regions of the lactose carrier. One of these involves an interaction between Asp-237 and Lys-358; another involves interaction between Asp-240 and Lys-319. Additional studies of...

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PMID: 8104184

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