The Enzyme Database

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Accepted name: 4-hydroxy-tetrahydrodipicolinate reductase
Reaction: (S)-2,3,4,5-tetrahydropyridine-2,6-dicarboxylate + NAD(P)+ + H2O = (2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate + NAD(P)H + H+
For diagram of lysine biosynthesis (early stages), click here
Glossary: (2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate = (2S,4S)-4-hydroxy-2,3,4,5-tetrahydropyridine-2,6-dicarboxylate
(S)-2,3,4,5-tetrahydropyridine-2,6-dicarboxylate = (2S)-2,3,4,5-tetrahydrodipicolinate
Other name(s): dihydrodipicolinate reductase (incorrect); dihydrodipicolinic acid reductase (incorrect); 2,3,4,5-tetrahydrodipicolinate:NAD(P)+ oxidoreductase (incorrect); dapB (gene name)
Systematic name: (S)-2,3,4,5-tetrahydropyridine-2,6-dicarboxylate:NAD(P)+ 4-oxidoreductase
Comments: Studies [2] of the enzyme from the bacterium Escherichia coli have shown that the enzyme accepts (2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate and not (S)-2,3-dihydrodipicolinate as originally thought [1].
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Farkas, W. and Gilvarg, C. The reduction step in diaminopimelic acid biosynthesis. J. Biol. Chem. 240 (1965) 4717–4722. [PMID: 4378965]
2.  Devenish, S.R., Blunt, J.W. and Gerrard, J.A. NMR studies uncover alternate substrates for dihydrodipicolinate synthase and suggest that dihydrodipicolinate reductase is also a dehydratase. J. Med. Chem. 53 (2010) 4808–4812. [DOI] [PMID: 20503968]
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