Predicted to enable Rho GDP-dissociation inhibitor activity. Predicted to be involved in Rho protein signal transduction. Located in cytosol and membrane. Human ortholog(s) of this gene implicated in nephrotic syndrome type 8. Is an ortholog of human ARHGDIA (Rho GDP dissociation inhibitor alpha); ARHGDIB (Rho GDP dissociation inhibitor beta); and ARHGDIG (Rho GDP dissociation inhibitor gamma).