<unk>  is a heterodimeric glycoprotein with non-covalently linked subunits.<unk>  has two subunits designated as the alpha subunit and beta subunit. The alpha subunit was named aL in<unk> 983. The alpha subunit is designated CD11a; and the beta subunit, unique to leukocytes, is beta-2 or CD18. The ICAM binding site is on the alpha subunit. The general binding region of the alpha subunit is the I-domain. Due to the presence of a divalent cation site in the I-domain, the specific binding site is often referred to as the metal-ion dependent adhesion site (MIDAS).
Lymphocyte function-associated antigen 1
Human leukocyte antigen
Tumor-associated glycoprotein 72
Promyelocytic leukemia protein
Interferon-induced transmembrane protein 5
Leukemia inhibitory factor
Interleukin-3 receptor
Major basic protein