Characterization, localization and transmembrane organization of the three proteins PrtD, PrtE and PrtF necessary for protease secretion by the gram-negative bacterium Erwinia chrysanthemi.

Abstract

Erwinia chrysanthemi, a Gram-negative phythopathogenic bacterium, secretes two related extracellular metalloproteases, B and C, which do not have N-terminal signal sequences. The specific pathway by which they are secreted, which has been reconstituted in Escherichia coli, comprises three proteins -- PrtD, PrtE and PrtF. Hybrid proteins containing segments… (More)

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