Enables guanyl-nucleotide exchange factor activity and small GTPase binding activity. Predicted to be involved in positive regulation of GTPase activity and signal transduction. Predicted to act upstream of or within small GTPase mediated signal transduction. Is expressed in several structures, including genitourinary system; heart; liver; lung; and spleen. Orthologous to human RGL3 (ral guanine nucleotide dissociation stimulator like 3). [provided by Alliance of Genome Resources, Apr 2022]