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EC Number General Information Commentary Reference
Show all pathways known for 1.1.1.290Display the word mapDisplay the reaction diagram Show all sequences 1.1.1.290metabolism 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 -, 724295
Show all pathways known for 1.1.1.290Display the word mapDisplay the reaction diagram Show all sequences 1.1.1.290physiological function 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 -, 739912
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