Predicted to enable G protein-coupled GABA receptor activity. Predicted to be involved in gamma-aminobutyric acid signaling pathway. Predicted to act upstream of or within G protein-coupled receptor signaling pathway. Predicted to be located in plasma membrane. Predicted to be part of G protein-coupled receptor heterodimeric complex. Is expressed in female organism; male organism; and nervous system. Human ortholog(s) of this gene implicated in alcohol dependence; amphetamine abuse; cocaine dependence; heroin dependence; and nicotine dependence. Orthologous to human GABBR1 (gamma-aminobutyric acid type B receptor subunit 1).