Anti-AGS8 antibodies enable researchers to detect and measure the AGS8 antigen in biological samples. This target is a reported synonym of the FNDC1 gene, which encodes fibronectin type III domain containing 1. This protein is believed to be an activator of G protein signaling. The human version of AGS8 has a canonical amino acid length of 1894 residues and a protein mass of 205.6 kilodaltons, although 2 isoforms have been identified. It is reported to be a secreted protein that is widely expressed in many tissue types.