Updated annotation (from data): Gamma-aminobutyrate:alpha-ketoglutarate aminotransferase (EC 2.6.1.19) Rationale: Important for utilization of putrescine as C or N source. This is the only transamination reaction in putrescine catabolism via gamma-glutamylputrescine (formed by BPHYT_RS23160), gamma-glutamylpurescine oxidase (possibly redundant, BPHYT_RS23125 or BPHYT_RS22700, neither has a phenotype), gamma-glutamylbutyraldehyde dehydrogenase (BPHYT_RS23175), and gamma-glutamyl-gamma-aminobutyrate hydrolase (probably BPHYT_RS23165, but no fitness data). Another gene (BPHYT_RS22435) likely has this activity as well, and is important (but with a weaker phenotype) on putresine as a carbon source. However that gene is not important with putrescine as a nitrogen source, which suggests that this gene is providing the activity. Original annotation: aminotransferase Type 1: Protein-coding gene Located on scaffold NC_010676, - strand, nucleotides 760,632 to 762,080 See nucleotide sequence around BPHYT_RS23155 or for all of scaffold NC_010676