Predicted to enable SH3 domain binding activity. Predicted to be involved in actin filament reorganization; cell migration; and transmembrane receptor protein tyrosine kinase signaling pathway. Predicted to be active in cytoplasm and focal adhesion. Predicted to colocalize with plasma membrane. Orthologous to human EFS (embryonal Fyn-associated substrate). [provided by Alliance of Genome Resources, Apr 2022]