Predicted to enable guanyl-nucleotide exchange factor activity. Predicted to be involved in positive regulation of Rho protein signal transduction. Predicted to be located in cytoplasm. Is expressed in several structures, including bone marrow; branchial arch; enteric nervous system; forelimb bud; and intestine. Orthologous to human ARHGEF3 (Rho guanine nucleotide exchange factor 3). [provided by Alliance of Genome Resources, Apr 2022]