A mutation in the Escherichia coli secY gene that produces distinct effects on inner membrane protein insertion and protein export.

Abstract excerpt

E. coli strains that contain the secY40 mutation are cold-sensitive, but protein export defects have not been observed even at the nonpermissive temperature. Here we describe experiments designed to explain the conditional phenotype associated with this allele. We found that combining the secY40 mutation with defects in the signal recognition particle targeting pathway led to synthetic lethality. Since the signal...

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