Construction and expression of diphtheria toxin-encoding gene derivatives in Escherichia coli.

Abstract excerpt

We reported earlier that in the periplasmic space of Escherichia coli, truncated derivatives of diphtheria toxin undergo limited proteolysis [Zdanovsky et al., Mol. Biol. 22 (1988) 1037-1293]. Here, we present data indicating that this proteolysis is reduced in cells bearing a mutation in the degP gene. We have also constructed hybrid genes whose products are not secreted into the periplasm. These hybrid genes...

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