Predicted to enable guanyl-nucleotide exchange factor activity and small GTPase binding activity. Predicted to be involved in several processes, including dendritic spine morphogenesis; marginal zone B cell differentiation; and positive regulation of GTPase activity. Predicted to be located in cytosol; dendritic spine; and nucleoplasm. Orthologous to human DOCK10 (dedicator of cytokinesis 10). [provided by Alliance of Genome Resources, Apr 2022]