Thiol reagents are substrates for the ADP-ribosyltransferase activity of pertussis toxin.

Abstract

Thiols such as cysteine and dithiothreitol are substrates for the ADP-ribosyltransferase activity of pertussis toxin. When cysteine was incubated with NAD+ and toxin at pH 7.5, a product containing ADP-ribose and cysteine (presumably ADP-ribosylcysteine) was isolated by high-performance liquid chromatography, and characterized by its composition and release… (More)

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