Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-protein and protein-ligand interactions.

1: Cell adhesion molecules 1: immunoglobulin superfamily. Bruemmendorf T, Rathjen FG; Protein Profile 1995;2:963-1085. PMID:8574878

2: The immunoglobulin fold Bork P, Holm L, Sander C; J Mol Biol 1994;242:309-320. PMID:7932691

3: The immunoglobulin superfamily--domains for cell surface recognition. Williams AF, Barclay AN; Annu Rev Immunol 1988;6:381-405. PMID:3289571