This family represents the transmembrane region of CD47 leukocyte antigen [1-2].

1: Expression of CD47/integrin-associated protein induces death of cultured cerebral cortical neurons. Koshimizu H, Araki T, Takai S, Yokomaku D, Ishikawa Y, Kubota M, Sano S, Hatanaka H, Yamada M; J Neurochem 2002;82:249-257. PMID:12124426

2: Integrin-associated protein immunoglobulin domain is necessary for efficient vitronectin bead binding. Lindberg FP, Gresham HD, Reinhold MI, Brown EJ; J Cell Biol 1996;134:1313-1322. PMID:8794870