Inhibition of ADP-ribosyltransferase activity of cholera toxin by MDL 12330A and chlorpromazine.

Abstract:

:ADP-ribosylation by cholera toxin of the guanine nucleotide binding regulatory protein (Gs) of rat liver membrane adenylate cyclase was inhibited by 0.1-1 mM MDL 12330A or 0.1-1 mM chlorpromazine. Basal as well as cholera toxin activated adenylate cyclase activity in liver membranes was also inhibited by the two drugs. NAD glycohydrolase activity and self-ADP-ribosylation of cholera toxin were also inhibited by MDL 12330A and chlorpromazine. These effects of MDL 12330A and chlorpromazine may be related to their effects on cholera toxin-induced fluid secretion in vivo.

authors

Bitonti AJ

doi

10.1016/0006-291x(84)91312-3

subject

Has Abstract

pub_date

1984-04-30 00:00:00

pages

700-6

issue

2

eissn

0006-291X

issn

1090-2104

pii

0006-291X(84)91312-3

journal_volume

120

pub_type

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