A pleîotropic acid phosphatase-deficient mutant of Escherichia coli shows premature termination in the dsbA gene. Use of dsbA::phoA fusions to localize a structurally important domain in DsbA.

Abstract excerpt

A one-step mutant of Escherichia coli K-12 lacking both glucose-1-phosphatase (Agp) and pH 2.5 acid phosphatase (AppA) activities in the periplasmic space was isolated. The mutation which mapped close to chlB, at 87 min on the E. coli linkage map, also caused the loss of alkaline phosphatase (PhoA) activity, even when this activity was expressed from TnphoA fusions to genes encoding periplasmic or membrane...

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