Updated annotation (from data): Homocysteine formation from aspartate semialdehyde (DUF39 component) Rationale: Mutants in all three genes of this putative system are rescued by casamino acids or methionine but not by threonine. We propose that these three genes act together to enable the formation of homocysteine from asparate semialdehyde (the pathway proposed by Allen et al 2015 (PMID:25938369)). (auxotroph) Original annotation: protein of unknown function DUF39 (RefSeq) Type 1: Protein-coding gene Located on scaffold 254340, + strand, nucleotides 1,794,909 to 1,796,081 See nucleotide sequence around DvMF_1464 or for all of scaffold 254340