This entry represents a domain found in the CFAP91 protein. CFAP91 (also known as AMY-1-associating protein expressed in testis 1 or AAT-1) is a component of a spoke-associated complex, regulates flagellar dynein activity by mediating regulatory signals between the radial spokes and dynein arms [1]. It binds to AMY1 and may play a role in spermatogenesis [2].

1: A conserved CaM- and radial spoke associated complex mediates regulation of flagellar dynein activity. Dymek EE, Smith EF; J Cell Biol. 2007;179:515-526. PMID:17967944

2: AAT-1, a novel testis-specific AMY-1-binding protein, forms a quaternary complex with AMY-1, A-kinase anchor protein 84, and a regulatory subunit of cAMP-dependent protein kinase and is phosphorylated by its kinase. Yukitake H, Furusawa M, Taira T, Iguchi-Ariga SM, Ariga H; J Biol Chem. 2002;277:45480-45492. PMID:12223483