GARB1, or Gamma-aminobutyric acid (GABA) A receptor, beta 1, is a human gene encoded by GABRB1. It may also be known as: Gamma-aminobutyric acid receptor subunit beta-1; GABA(A) receptor subunit beta-1; receptor subunit beta-1; GABA(A) receptor, beta 1. The encoded protein has an amino acid length of 474 and a mass of 54.2 kDa. Other isoforms may exist. GARB1 is a member of the Ligand-gated ion channel (TC 1.A.9) family, Gamma-aminobutyric acid receptor (TC 1.A.9.5) subfamily, GABRB1 sub-subfamily. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog.