Anti-immunoglobulin like and fibronectin type III domain containing 1 antibodies are used for the immunodetection of the protein encoded by the IGFN1 gene. In humans, the canonical protein has a reported length of 1251 amino acid residues and a mass of 137.8 kDa. Its subcellular localization is in the nucleus and cytoplasm. Alternative splicing is reported to yield 5 different isoforms for this protein. It is reported to be expressed in skeletal muscle. Other names for this target antigen include EEF1A2-binding protein 1, KY-interacting protein 1, eEF1A2 binding protein, and immunoglobulin-like and fibronectin type III domain-containing protein 1. Gene orthologs have been identified in the mouse, rat, bovine, chimpanzee and chicken species.