Predicted to enable small GTPase binding activity. Predicted to be involved in protein geranylgeranylation and vesicle-mediated transport. Predicted to be located in nucleoplasm. Predicted to be part of Rab-protein geranylgeranyltransferase complex. Predicted to be active in cytosol and nucleus. Is expressed in nervous system. Human ortholog(s) of this gene implicated in asthma. Orthologous to human CHML (CHM like Rab escort protein). [provided by Alliance of Genome Resources, Apr 2022]