1.1.99.B1 669121 Flavin adenine dinucleotide-dependent 4-phospho-D-erythronate dehydrogenase is responsible for the 4-phosphohydroxy-L-threonine pathway in vitamin B6 biosynthesis in Sinorhizobium meliloti J. Bacteriol. 188 4635-4645 2006 Sinorhizobium meliloti http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=16788172&form=6&db=m