Predicted to enable guanyl-nucleotide exchange factor activity and identical protein binding activity. Predicted to be involved in cell migration; plasma membrane bounded cell projection assembly; and regulation of cell migration. Predicted to be located in several cellular components, including filopodium; lamellipodium; and ruffle membrane. Is expressed in brain; thymus primordium; and vertebral cartilage condensation. Orthologous to human SPATA13 (spermatogenesis associated 13). [provided by Alliance of Genome Resources, Apr 2022]