Ankyrin 1, was first discovered in the erythrocytes but also later found to be expressed in the brain and muscles. In erythrocytes, Ankyrin 1 links membrane receptor CD44 to inositol triphosphate and the cytoskeleton.
Ankyrin contains three functional domains: a conserved N-terminal ankyrin repeat domain (ARD) consisting of 22–24 tandem repeats of 33 amino acids, a spectrin binding domain and a variably sized C-terminal regulatory domain.
Ankyrin was discovered by Dr. G. Vann Bennett (M.D., PhD.) in 1976.
^ Hryniewicz-Jankowska A, Czogalla A, Bok E, Sikorsk AF (2002). "Ankyrins, multifunctional proteins involved in many cellular pathways". Folia Histochem Cytobiol40 (3): 239-49. PMID 12219834.
^ Singleton PA, Bourguignon LY (2004). "CD44 interaction with ankyrin and IP3 receptor in lipid rafts promotes hyaluronan-mediated Ca2+ signaling leading to nitric oxide production and endothelial cell adhesion and proliferation". Exp Cell Res295 (1): 102-18. PMID 15051494.