escherichia coli heat-labile enterotoxin ( labile toxin , lt ) catalyzed the hydrolysis of nad to adp-ribose and nicotinamide and the adp-ribosylation of arginine ( moss , j. , and richardson , s.h . ( 1978 ) j. clin . invest . 62 , 281-285 ) .
C0014372
enterotoxin
C0040549
toxin