Predicted to enable guanyl-nucleotide exchange factor activity. Acts upstream of or within central nervous system neuron axonogenesis and neurofilament cytoskeleton organization. Predicted to be located in cytoplasm and plasma membrane. Is expressed in adrenal gland; genitourinary system; oral epithelium; paravertebral ganglion; and stomach. Orthologous to human ARHGEF28 (Rho guanine nucleotide exchange factor 28). [provided by Alliance of Genome Resources, Apr 2022]