ID 1.1.1.115 DE ribose 1-dehydrogenase (NADP(+)). AN NADP-pentose-dehydrogenase. CA D-ribose + H2O + NADP(+) = D-ribonate + 2 H(+) + NADPH. CC -!- Also acts, more slowly, on D-xylose and other pentoses. //