Processing of chimeric mammalian cytochrome b5 precursors in Escherichia coli: reaction specificity of signal peptidase and identification of an aminopeptidase in post-translocational processing.


A chimeric precursor interlinked by an arginine residue between the full-length signal sequence of alkaline phosphatase and the eukaryotic cytoplasmic cytochrome b5 was constructed. Expression of the chimeric precursor protein in Escherichia coli resulted in efficient export of spectrally authentic cytochrome b5 into the periplasm [Karim, Harding, Evans… (More)


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