CTBP1 is a symbol for the gene, C-terminal binding protein 1, in humans. Other names include: C-terminal-binding protein 1; CtBP1; brefeldin A-ribosylated substrate; BARS. The encoded protein is an enzyme with an amino acid length of 440 and a mass of 47.5 kDa. Other isoforms may exist. CTBP1 is a member of the D-isomer specific 2-hydroxyacid dehydrogenase family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.