Ready-to-use ELISA kits are available for the detection of Grb2-binding adaptor, transmembrane, an alias of the protein, GRB2 binding adaptor protein, transmembrane. The official gene symbol is GAPT. The protein, with a mass of 17.9 kDa and length of 157 residues, is reported to be membrane-associated. It is a member of the GAPT family and may be known by other names, including: C5orf29, growth factor receptor-bound protein 2-binding adapter protein transmembrane, GRB2-binding transmembrane adaptor, and protein GAPT.