ID 4.3.1.27 DE threo-3-hydroxy-D-aspartate ammonia-lyase. AN D-threo-3-hydroxyaspartate dehydratase. CA (3R)-3-hydroxy-D-aspartate = NH4(+) + oxaloacetate. CC -!- The enzyme, purified from the bacterium Delftia sp. HT23, also has CC activity against L-threo-3-hydroxyaspartate, L-erythro-3- CC hydroxyaspartate, and D-serine. CC -!- Different from EC 4.3.1.20 and EC 4.3.1.16. CC -!- Requires a divalent cation such as Mn(2+), Co(2+) or Ni(2+). DR B2DFG5, DTHAD_DELSH; //