Predicted to enable GTPase activator activity and guanyl-nucleotide exchange factor activity. Acts upstream of or within positive regulation of GTPase activity and wound healing. Is expressed in several structures, including genitourinary system; nose; oral epithelium; pharyngo-tympanic tube; and vibrissa. Orthologous to human ARHGEF19 (Rho guanine nucleotide exchange factor 19). [provided by Alliance of Genome Resources, Apr 2022]