Reaction catalyzed by 4-hydroxy-tetrahydrodipicolinate reductase (1.17.1.8)

		+		NAD(P)H	=			+		NAD(P)+
	2,3-dihydrodipicolinate	+		NAD(P)H	=		2,3,4,5-tetrahydrodipicolinate	+		NAD(P)+