ID 1.1.1.287 DE D-arabinitol dehydrogenase (NADP(+)). AN D-arabinitol dehydrogenase 1. AN NADP(+)-dependent D-arabinitol dehydrogenase. CA (1) D-arabinitol + NADP(+) = D-xylulose + H(+) + NADPH. CA (2) D-arabinitol + NADP(+) = D-ribulose + H(+) + NADPH. CC -!- The enzyme from the rust fungus Uromyces fabae can use D-arabinitol CC and D-mannitol as substrates in the forward direction and D-xylulose, CC D-ribulose and, to a lesser extent, D-fructose as substrates in the CC reverse direction. CC -!- This enzyme carries out the reactions of both EC 1.1.1.11 and CC EC 1.1.1.250, but unlike them, uses NADP(+) rather than NAD(+) as CC cofactor. CC -!- D-Arabinitol is capable of quenching reactive oxygen species involved CC in defense reactions of the host plant. DR Q4R0J7, ARD1_UROFA ; //