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pubmed:abstractText |
SecA protein synthesis levels were elevated 10- to 20-fold when protein secretion was blocked in secA, secD, and secY mutants or in a malE-lacZ fusion-containing strain but not in a secB null mutant. An active secB gene product was not required to derepress secA, since SecA levels were elevated during protein export blocks in secB secY and secB malE-lacZ double mutants.
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