https://doi.org/10.1351/goldbook.13295
Large family of proteins characterized by possession of "immunoglobulin-type" domains of approximately 110 amino acids folded into two \(\ce{\upbeta\mbox{-}pleated sheets}\). Members include immunoglobulins \(A\), \(E\), \(G\), \(M\) (IgA, IgE, IgG, and IgM), T-cell receptors (TCRs), and human leukocyte antigen (HLA) major histocompatibility complex (MHC) molecules.