The cytoplasmic domain of Escherichia coli leader peptidase is a "translocation poison" sequence.


Leader peptidase is an integral, transmembrane protein of the plasma membrane of Escherichia coli. Its membrane assembly requires its internal, uncleaved signal sequence, its large periplasmic carboxyl-terminal region, and an apolar domain that is known as a "hydrophobic helper." We now show that the polar cytoplasmic domain of leader peptidase is a unique… (More)


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