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Yorodumi- EMDB-0980: CryoEM structure of S.typhimurium R-type straight flagellar filam... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-0980 | |||||||||
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Title | CryoEM structure of S.typhimurium R-type straight flagellar filament made of FljB (A461V) | |||||||||
Map data | Cryo-EM structure of S.typhimurium R-type straight flagellar filament made of FljB (A461V) . | |||||||||
Sample |
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Biological species | Salmonella enterica subsp. enterica serovar Typhimurium (bacteria) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.56 Å | |||||||||
Authors | Yamaguchi T / Toma S | |||||||||
Funding support | Japan, 1 items
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Citation | Journal: Biomolecules / Year: 2020 Title: Structural and Functional Comparison of Flagellar Filaments Composed of FljB and FliC. Authors: Tomoko Yamaguchi / Shoko Toma / Naoya Terahara / Tomoko Miyata / Masamichi Ashihara / Tohru Minamino / Keiichi Namba / Takayuki Kato / Abstract: The bacterial flagellum is a motility organelle consisting of a long helical filament as a propeller and a rotary motor that drives rapid filament rotation to produce thrust. serovar Typhimurium has ...The bacterial flagellum is a motility organelle consisting of a long helical filament as a propeller and a rotary motor that drives rapid filament rotation to produce thrust. serovar Typhimurium has two genes of flagellin, and , for flagellar filament formation and autonomously switches their expression at a frequency of 10-10 per cell per generation. We report here differences in their structures and motility functions under high-viscosity conditions. A strain expressing FljB showed a higher motility than one expressing FliC under high viscosity. To examine the reasons for this motility difference, we carried out structural analyses of the FljB filament by electron cryomicroscopy and found that the structure was nearly identical to that of the FliC filament except for the position and orientation of the outermost domain D3 of flagellin. The density of domain D3 was much lower in FljB than FliC, suggesting that domain D3 of FljB is more flexible and mobile than that of FliC. These differences suggest that domain D3 plays an important role not only in changing antigenicity of the filament but also in optimizing motility function of the filament as a propeller under different conditions. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_0980.map.gz | 44.8 MB | EMDB map data format | |
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Header (meta data) | emd-0980-v30.xml emd-0980.xml | 16 KB 16 KB | Display Display | EMDB header |
Images | emd_0980.png | 264.3 KB | ||
Masks | emd_0980_msk_1.map | 244.1 MB | Mask map | |
Others | emd_0980_half_map_1.map.gz emd_0980_half_map_2.map.gz | 194.6 MB 194.7 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-0980 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-0980 | HTTPS FTP |
-Related structure data
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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-Map
File | Download / File: emd_0980.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Cryo-EM structure of S.typhimurium R-type straight flagellar filament made of FljB (A461V) . | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Mask #1
File | emd_0980_msk_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: Cryo-EM half map 1 of 3D Refinement.
File | emd_0980_half_map_1.map | ||||||||||||
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Annotation | Cryo-EM half map 1 of 3D Refinement. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Cryo-EM half map 2 of 3D Refinement.
File | emd_0980_half_map_2.map | ||||||||||||
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Annotation | Cryo-EM half map 2 of 3D Refinement. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
-Entire : FljB
Entire | Name: FljB |
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Components |
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-Supramolecule #1: FljB
Supramolecule | Name: FljB / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1 / Details: R-type straight flagellar filament (A461V) |
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Source (natural) | Organism: Salmonella enterica subsp. enterica serovar Typhimurium (bacteria) Strain: SJW590 |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | filament |
-Sample preparation
Buffer | pH: 7.8 Component:
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Sugar embedding | Material: buffer | ||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: FEI FALCON II (4k x 4k) / Detector mode: COUNTING / Digitization - Frames/image: 1-6 / Number grids imaged: 3 / Number real images: 2319 / Average electron dose: 10.3 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 100.0 µm / Calibrated defocus max: 1.6 µm / Calibrated defocus min: 0.21 µm / Calibrated magnification: 72273 / Illumination mode: OTHER / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.5 µm / Nominal magnification: 75000 |
Sample stage | Cooling holder cryogen: NITROGEN |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |