Physiological basis for conservation of the signal recognition particle targeting pathway in Escherichia coli.

Abstract excerpt

The Escherichia coli signal recognition particle (SRP) is a ribonucleoprotein complex that targets nascent inner membrane proteins (IMPs) to transport sites in the inner membrane (IM). Since SRP depletion only partially inhibits IMP insertion under some growth conditions, however, it is not clear why the particle is absolutely essential for viability. Insights into this question emerged from experiments in which...

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