Updated annotation (from data): Phosphoglycerate dehydrogenase (EC:1.1.1.95) Rationale: Auxotrophic, and rescued by L-serine or gly-glu. Glycine could yield serine via hydroxymethyltransferase, so this is consistent with a role in serine synthesis. BPHYT_RS31960 is also a possibility but gene context suggests that has a role in catabolism and has little phenotype; BPHYT_RS01425 is a possibility, but fitness data suggests it is cell wall related (auxotroph) Original annotation: FAD-linked oxidase Type 1: Protein-coding gene Located on scaffold NC_010681, + strand, nucleotides 704,985 to 709,079 See nucleotide sequence around BPHYT_RS03150 or for all of scaffold NC_010681