Predicted to enable GTPase activator activity and small GTPase binding activity. Predicted to be involved in activation of GTPase activity and intracellular protein transport. Predicted to act upstream of or within positive regulation of transcription by RNA polymerase II. Predicted to be located in cytoplasmic vesicle membrane and cytosol. Orthologous to human SGSM1 (small G protein signaling modulator 1). [provided by Alliance of Genome Resources, Apr 2022]