This family represents the C-terminal domain of dynein heavy chain. This domain is a complex structure comprising six alpha-helices and an incomplete six-stranded antiparallel beta-barrel. The shape of this domain is distinctively flat, spreading over the AAA1, AAA5 and AAA6 domain [3].

1: Molecular characterization of a cytoplasmic dynein from Dictyostelium. Koonce MP, Grissom PM, Lyon M, Pope T, McIntosh JR; J Eukaryot Microbiol 1994;41:645-651. PMID:7866389

2: Model for the motor component of dynein heavy chain based on homology to the AAA family of oligomeric ATPases. Mocz G, Gibbons IR; Structure. 2001;9:93-103. PMID:11250194

3: The 2.8 A crystal structure of the dynein motor domain. Kon T, Oyama T, Shimo-Kon R, Imamula K, Shima T, Sutoh K, Kurisu G; Nature. 2012;484:345-350. PMID:22398446