class I molecule

class I molecule

a major histocompatibility complex antigen made up of two noncovalently bonded polypeptide chains, one glycosylated, heavy, and variable with antigen specificity; the other chain is β2-microglobulin.

class I mol·e·cule

(klas mol'ĕ-kyūl)
A major histocompatibility complex antigen made up of two noncovalently bonded polypeptide chains, one glycosylated, heavy, and variable with antigen specificity; the other chain is β2-microglobulin.