Predicted to enable PDZ domain binding activity; enzyme binding activity; and guanyl-nucleotide exchange factor activity. Predicted to be involved in activation of GTPase activity; cell chemotaxis; and positive regulation of protein localization to plasma membrane. Predicted to be located in cytoplasm. Is expressed in several structures, including branchial arch; chordamesoderm; embryo ectoderm; extraembryonic component; and otocyst. Orthologous to human ARHGEF16 (Rho guanine nucleotide exchange factor 16). [provided by Alliance of Genome Resources, Apr 2022]