Predicted to enable guanyl-nucleotide exchange factor activity. Predicted to be involved in axon guidance. Predicted to be located in myofibril. Predicted to be active in cytoplasm and plasma membrane. Predicted to be extrinsic component of membrane. Orthologous to human ARHGEF25 (Rho guanine nucleotide exchange factor 25). [provided by Alliance of Genome Resources, Apr 2022]