Predicted to enable GTPase activity and signaling receptor complex adaptor activity. Predicted to be involved in G protein-coupled receptor signaling pathway. Located in myelin sheath. Part of heterotrimeric G-protein complex. Is expressed in several structures, including clavicle; eye; genitourinary system; heart valve; and nervous system. Human ortholog(s) of this gene implicated in Charcot-Marie-Tooth disease dominant intermediate F. Orthologous to human GNB4 (G protein subunit beta 4). [provided by Alliance of Genome Resources, Apr 2022]