(S)-2,3,4,5-tetrahydrodipicolinate + NADP(+) + H2O => (2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate + NADPH + H(+)
(s)-2,3,4,5-tetrahydrodipicolinate + nadp(+) + h2o => (2s,4s)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate + nadph + h(+)