(2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate + H2O + H(+) => L-aspartate 4-semialdehyde + pyruvate
(2s,4s)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate + h2o + h(+) => l-aspartate 4-semialdehyde + pyruvate