This entry represents a barrel domain of flagellins FliC and FljB, which have a boomerang-shape with one arm composed of domain D1 and the other formed by D2 and D3 [1-3]. This entry corresponds to to subdomain D2b described in [4].

1: Conformational change of flagellin for polymorphic supercoiling of the flagellar filament. Maki-Yonekura S, Yonekura K, Namba K; Nat Struct Mol Biol. 2010;17:417-422. PMID:20228803

2: Structural and Functional Comparison of Salmonella Flagellar Filaments Composed of FljB and FliC. Yamaguchi T, Toma S, Terahara N, Miyata T, Ashihara M, Minamino T, Namba K, Kato T; Biomolecules. 2020; [Epub ahead of print] PMID:32041169

3: Methylation of Salmonella Typhimurium flagella promotes bacterial adhesion and host cell invasion. Horstmann JA, Lunelli M, Cazzola H, Heidemann J, Kuhne C, Steffen P, Szefs S, Rossi C, Lokareddy RK, Wang C, Lemaire L, Hughes KT, Uetrecht C, Schluter H, Grassl GA, Stradal TEB, Rossez Y, Kolbe M, Erhardt M; Nat Commun. 2020;11:2013. PMID:32332720

4: Structure of the bacterial flagellar protofilament and implications for a switch for supercoiling. Samatey FA, Imada K, Nagashima S, Vonderviszt F, Kumasaka T, Yamamoto M, Namba K; Nature. 2001;410:331-337. PMID:11268201