Predicted to enable Rab GDP-dissociation inhibitor activity and small GTPase binding activity. Predicted to be involved in several processes, including negative regulation of protein targeting to membrane; regulation of axonogenesis; and response to calcium ion. Located in myelin sheath. Is expressed in several structures, including liver; nervous system; placenta; sensory organ; and spleen. Used to study non-syndromic X-linked intellectual disability. Human ortholog(s) of this gene implicated in non-syndromic X-linked intellectual disability; non-syndromic X-linked intellectual disability 41; and psychotic disorder. Orthologous to human GDI1 (GDP dissociation inhibitor 1). [provided by Alliance of Genome Resources, Apr 2022]