The function of Ensembl gene identifier ENSG00000087266 (SH3BP2, SH3 domain binding protein 2) is as follows. Binds differentially to the SH3 domains of certain proteins of signal transduction pathways. Binds to phosphatidylinositols; linking the hemopoietic tyrosine kinase fes to the cytoplasmic membrane in a phosphorylation dependent mechanism.