1.1.1.290: 4-phosphoerythronate dehydrogenase
This is an abbreviated version!
For detailed information about 4-phosphoerythronate dehydrogenase, go to the full flat file.
Word Map on EC 1.1.1.290
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1.1.1.290
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2-hydroxyacid
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pyridoxine
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salvage
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dehydrogenases
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aeruginosa
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homodimeric
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pyridoxal
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5'-phosphate
- 1.1.1.290
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2-hydroxyacid
- pyridoxine
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salvage
- dehydrogenases
- aeruginosa
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homodimeric
- pyridoxal
- 5'-phosphate
Reaction
Synonyms
4-O-phosphoerythronate dehydrogenase, D-erythronate-4-phosphate dehydrogenase, erythronate-4-phosphate dehydrogenase, More, pdx gene product, PDXB, PdxB 4PE dehydrogenase, RdxB
ECTree
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General Information
General Information on EC 1.1.1.290 - 4-phosphoerythronate dehydrogenase
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metabolism
physiological function
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pyridoxal phosphate biosynthesis in Escherichia coli is quite different from the more widely used Pdx1/Pdx2-dependent pathway. Escherichia coli uses seven enzymes in a bifurcated pathway that converts pyruvate, glyceraldehyde-3-phosphate, and erythrose-4-phosphate to pyridoxal phosphate via the intermediates 1-deoxy-D-xylulose 5-phosphate and 1-amino-propan-2-one-3-phosphate. PdxB catalyzes the second step in the biosynthesis of pyridoxal phosphate by oxidizing 4-phospho-D-erythronate to 2-oxo-3-hydroxy-4-phospho-butanoate with concomitant reduction
metabolism
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pyridoxal phosphate biosynthesis in Escherichia coli is quite different from the more widely used Pdx1/Pdx2-dependent pathway. Escherichia coli uses seven enzymes in a bifurcated pathway that converts pyruvate, glyceraldehyde-3-phosphate, and erythrose-4-phosphate to pyridoxal phosphate via the intermediates 1-deoxy-D-xylulose 5-phosphate and 1-amino-propan-2-one-3-phosphate. PdxB catalyzes the second step in the biosynthesis of pyridoxal phosphate by oxidizing 4-phospho-D-erythronate to 2-oxo-3-hydroxy-4-phospho-butanoate with concomitant reduction
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the pdxB gene, encoding erythronate-4-phosphate dehydrogenase, is required for de novo vitamin B6 biosynthesis. Mutation in pdxB causes growth deficiency of Photorhabdus luminescens in nutrient-poor medium, which is restored under nutrient-rich conditions or by supplementation with pyridoxal 5'-phosphate. Supplementation with pyridoxal, pyridoxine, and pyridoxamine also restores the growth of the pdxB mutant. Supplementation with pyridoxal 5'-phosphate restores the virulence-deficient phenotype against Caenorhabditis elegans
physiological function
Photorhabdus luminescens DSM 15139
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the pdxB gene, encoding erythronate-4-phosphate dehydrogenase, is required for de novo vitamin B6 biosynthesis. Mutation in pdxB causes growth deficiency of Photorhabdus luminescens in nutrient-poor medium, which is restored under nutrient-rich conditions or by supplementation with pyridoxal 5'-phosphate. Supplementation with pyridoxal, pyridoxine, and pyridoxamine also restores the growth of the pdxB mutant. Supplementation with pyridoxal 5'-phosphate restores the virulence-deficient phenotype against Caenorhabditis elegans
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