Which of the following is the donor of ADP-ribose for ADP-ribosylation reactions?: (A) Adenosine triphosphate, (B) Adenosine monophosphate, (C) Nicotinamide adenine dinucleotide, (D) Flavin mononucleotide
Answer is C. ADP-ribosylation One of the histone post-translational modifications. NAD+ acts as the source of ADP-ribose. Eg : Mechanism of action of cholera toxin, diphtheria toxin and ricin