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pubmed:abstractText |
Efficient translocation of pure precursor of PhoE protein (prePhoE) could be accomplished in an in vitro system consisting of only inverted Escherichia coli inner membrane vesicles, ATP, and SecA and SecB protein. In this in vitro system SecB and not trigger factor could stabilize a translocation-competent state of prePhoE. In contrast, translocation competency of proOmpA could be induced by both trigger factor and SecB protein, suggesting specificity in interactions between cytosolic factors and precursors in outer membrane protein translocation.
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