Cleavage of pseudomonas exotoxin and diphtheria toxin by a furin-like enzyme prepared from beef liver.

Abstract excerpt

Pseudomonas exotoxin (PE) is cleaved within mammalian cells between Arg279 and Gly280 to generate an enzymatically active COOH-terminal fragment of 37 kDa which translocates to the cytosol and ADP-ribosylates elongation factor 2. A protease, with toxin cleaving activity, was prepared from beef liver and subsequently characterized. After achieving a 500-fold enrichment in several chromatographic steps, a soluble...

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