Reaction catalyzed by 4-hydroxy-tetrahydrodipicolinate synthase (4.3.3.7)

		+			=			+		H2O
	pyruvate	+		L-aspartate-4-semialdehyde	=		(2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate	+		H2O