ID 2.7.7.35 DE ADP ribose phosphorylase. AN ADP-ribose phosphorylase. AN ribose-5-phosphate adenylyltransferase. CA ADP + D-ribose 5-phosphate + H(+) = ADP-D-ribose + phosphate. CC -!- The enzyme, characterized from the single-celled alga Euglena CC gracilis, catalyzes an irreversible reaction in the direction of ADP CC formation. cf. EC 2.7.7.96. //