Tags: Enzyme.
In enzymology a NAD+-diphthamide ADP-ribosyltransferase (EC 2.4.2.36) is an enzyme that catalyzes the chemical reactionNAD+ + peptide diphthamide nicotinamide + peptide N-(ADP-D-ribosyl)diphthamideThus the two substrates of this enzyme are NAD+ and peptide diphthamide whereas its two products are nicotinamide and peptide N-(ADP-D-ribosyl)diphthamide.This enzyme belongs to the family of glycosyltransferases to be specific the pentosyltransferases.