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EC 1.1.1.290 Details
EC number
1.1.1.290
Accepted name
4-phosphoerythronate dehydrogenase
Reaction
4-phospho-D-erythronate + NAD+ = (3R)-3-hydroxy-2-oxo-4-phosphooxybutanoate + NADH + H+
Other name(s)
PdxB, PdxB 4PE dehydrogenase, 4-O-phosphoerythronate dehydrogenase, 4PE dehydrogenase, erythronate-4-phosphate dehydrogenase
Systematic name
4-phospho-D-erythronate:NAD+ 2-oxidoreductase
CAS registry number
125858-75-5
Comment
This enzyme catalyses a step in a bacterial pathway for the biosynthesis of pyridoxal 5′-phosphate. The enzyme contains a tightly-bound NAD(H) cofactor that is not re-oxidized by free NAD+. In order to re-oxidize the cofactor and restore enzyme activity, the enzyme catalyses the reduction of a 2-oxo acid (such as 2-oxoglutarate, oxaloacetate, or pyruvate) to the respective (R)-hydroxy acid [6]. cf. EC 1.1.1.399, 2-oxoglutarate reductase.
History
created 2006, modified 2016
EC Tree
1.1.1.68 created 1965, deleted 1978 [transferred to EC 1.1.99.15, deleted 1980]
1.1.1.70 created 1965, deleted 1978
1.1.1.74 created 1972, deleted 1976
1.1.1.89 created 1972, deleted 1976
1.1.1.109 created 1972, deleted 1976
1.1.1.139 created 1972, deleted 1978
1.1.1.155 created 1976, deleted 2004
1.1.1.171 created 1978, deleted 1984
1.1.1.180 created 1983, deleted 1984
1.1.1.182 created 1983, deleted 1990
1.1.1.204 created 1972 as EC 1.2.1.37, transferred 1984 to EC 1.1.1.204, modified 1989, deleted 2004
1.1.1.242 created 1992, deleted 2001
1.1.1.249 provisional version created 1999, deleted 1999 (reinstated 2001 as EC 2.5.1.46)
1.1.1.253 created 1999, deleted 2003