6rgv | pdb_00006rgv

Truncated FljB phase 2 flagellin

spinqualitylabelsall models 6rgv, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6rgv is a 1 chain structure with sequence from Salts. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 1io1 Gene: fljB, SL1344_2756 (SALTS) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [A0A0H3NEZ8_SALTS] Flagellin is the subunit protein which polymerizes to form the filaments of bacterial flagella.[RuleBase:RU362073] Publication Abstract from PubMed Bacterial flagellar filaments are assembled by tens of thousands flagellin subunits, forming 11 helically arranged protofilaments. Each protofilament can take either of the two bistable forms L-type or R-type, having slightly different conformations and inter-protofilaments interactions. By mixing different ratios of L-type and R-type protofilaments, flagella adopt multiple filament polymorphs and promote bacterial motility. In this study, we investigated the hydrogen bonding networks at the flagellin crystal packing interface in Salmonella enterica serovar typhimurium (S. typhimurium) by site-directed mutagenesis of each hydrogen bonded residue. We identified three flagellin mutants D108A, N133A and D152A that were non-motile despite their fully assembled flagella. Mutants D108A and D152A trapped their flagellar filament into inflexible right-handed polymorphs, which resemble the previously predicted 3L/8R and 4L/7R helical forms in Calladine's model but have never been reported in vivo. Mutant N133A produces floppy flagella that transform flagellar polymorphs in a disordered manner, preventing the formation of flagellar bundles. Further, we found that the hydrogen bonding interactions around these residues are conserved and coupled to flagellin L/R transition. Therefore, we demonstrate that the hydrogen bonding networks formed around flagellin residues D108, N133 and D152 greatly contribute to flagellar bending, flexibility, polymorphisms and bacterial motility. Role of flagellar hydrogen bonding in Salmonella motility and flagellar polymorphic transition.,Wang C, Lunelli M, Zschieschang E, Bosse JB, Thuenauer R, Kolbe M Mol Microbiol. 2019 Nov;112(5):1519-1530. doi: 10.1111/mmi.14377. Epub 2019 Sep, 13. PMID:31444817 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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