This domain is found in Intraflagellar transport protein 52 homolog from humans (Itf52) and similar eukaryotic proteins. Itf52 is part the IFT-B complex, which is involved in intraflagellar transport (IFT), the bidirectional movement of particles required for the assembly, maintenance and functioning of primary cilia. This entry represents the C-terminal domain of Itf52, responsible for the binding to the C-terminal domain of Ift46 and essential for the interaction between the subcomplexes. It shows an all-alpha structure [1,2].

1: Crystal structures of IFT70/52 and IFT52/46 provide insight into intraflagellar transport B core complex assembly. Taschner M, Kotsis F, Braeuer P, Kuehn EW, Lorentzen E; J Cell Biol. 2014;207:269-282. PMID:25349261

2: IFT52 mutations destabilize anterograde complex assembly, disrupt ciliogenesis and result in short rib polydactyly syndrome. Zhang W, Taylor SP, Nevarez L, Lachman RS, Nickerson DA, Bamshad M, Krakow D, Cohn DH; Hum Mol Genet. 2016;25:4012-4020. PMID:27466190