BCAT1 encodes the human gene, Branched chain amino-acid transaminase 1, cytosolic. It may also be known as: Branched-chain-amino-acid aminotransferase, cytosolic; BCAT(c); Protein ECA39; BCATC; BCT1; ECA39; MECA39; PNAS121. The encoded protein is an enzyme with an amino acid length of 386 and a mass of 43.0 kDa. Other isoforms may exist. BCAT1 is a member of the Class-IV pyridoxal-phosphate-dependent aminotransferase family. Homologs of this gene exist in other organisms, including: Mouse.