Family of archaeal flaD and flaE proteins. Conserved region found at N-terminus of flaE but towards the C-terminus of flaD [1].

1: Characterization of flagellum gene families of methanogenic archaea and localization of novel flagellum accessory proteins. Thomas NA, Jarrell KF; J Bacteriol 2001;183:7154-7164. PMID:11717274