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Information on EC - 4-hydroxy-tetrahydrodipicolinate synthase

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EC Tree
     4 Lyases
         4.3 Carbon-nitrogen lyases
             4.3.3 Amine-lyases
       4-hydroxy-tetrahydrodipicolinate synthase
IUBMB Comments
The reaction can be divided into three consecutive steps: Schiff base formation with pyruvate, the addition of L-aspartate-semialdehyde, and finally transimination leading to cyclization with simultaneous dissociation of the product. The product of the enzyme was initially thought to be (S)-2,3-dihydrodipicolinate [1,2], and the enzyme was classified accordingly as EC, dihydrodipicolinate synthase. Later studies of the enzyme from the bacterium Escherichia coli have suggested that the actual product of the enzyme is (2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate , and thus the enzyme has been reclassified as 4-hydroxy-tetrahydrodipicolinate synthase. However, the identity of the product is still controversial, as more recently it has been suggested that it may be (S)-2,3-dihydrodipicolinate after all .
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Word Map
The enzyme appears in viruses and cellular organisms
dhdps, dihydrodipicolinate synthase, dhdps2, pa1010, dihydrodipicolinic acid synthase, cjdhdps, cdhdps, 4-hydroxy-tetrahydrodipicolinate synthase, mrsa-dhdps, dhdpa synthase, more
pyruvate + L-aspartate-4-semialdehyde = (2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate + H2O
show the reaction diagram