Mutations that improve export of maltose-binding protein in SecB- cells of Escherichia coli.


It previously has been proposed that the Escherichia coli SecB protein promotes the export of the maltose-binding protein (MBP) from the cytoplasm by preventing the folding of the precursor MBP (preMBP) into a translocation-incompetent conformation. The export of wild-type MBP is only partially blocked in SecB- cells. In contrast, the export of MBP16-1, an… (More)


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