Mona, Grf40, RP3-370M22.1, growth factor receptor-bound protein 2-related adaptor protein 2, hematopoietic cell-associated adaptor protein GRPL, GRB2-related protein with insert domain, growth factor receptor-binding protein, SH3-SH2-SH3 adaptor molecule, GRB-2-like protein, GRB2-related adaptor protein 2, GRAP-2, GRBLG, GRB2L, Mona, GrbX, GRPL, GADS, P38, GRID, GRAP2

This gene encodes a member of the GRB2/Sem5/Drk family. This member is an adaptor-like protein involved in leukocyte-specific protein-tyrosine kinase signaling. Like its related family member, GRB2-related adaptor protein (GRAP), this protein contains an SH2 domain flanked by two SH3 domains. This protein interacts with other proteins, such as GRB2-associated binding protein 1 (GAB1) and the SLP-76 leukocyte protein (LCP2), through its SH3 domains. Transcript variants utilizing alternative polyA sites exist.