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Open data
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Basic information
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Title | cryo-EM of Cupriavidus gilardii flagellum | |||||||||
![]() | cryo-EM of Cupriavidus gilardii flagellum | |||||||||
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![]() | Flagellum / Flagellar filament / filament / helical symmetry / PROTEIN FIBRIL | |||||||||
Function / homology | ![]() bacterial-type flagellum / structural molecule activity / extracellular region Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | helical reconstruction / cryo EM / Resolution: 3.4 Å | |||||||||
![]() | Fields JL / Zhang H / Halder SK / Wu H / Wang F | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural diversity and clustering of bacterial flagellar outer domains. Authors: Jessie Lynda Fields / Hua Zhang / Nathan F Bellis / Holly A Petersen / Sajal K Halder / Shane T Rich-New / Mart Krupovic / Hui Wu / Fengbin Wang / ![]() ![]() Abstract: Supercoiled flagellar filaments function as mechanical propellers within the bacterial flagellum complex, playing a crucial role in motility. Flagellin, the building block of the filament, features a ...Supercoiled flagellar filaments function as mechanical propellers within the bacterial flagellum complex, playing a crucial role in motility. Flagellin, the building block of the filament, features a conserved inner D0/D1 core domain across different bacterial species. In contrast, approximately half of the flagellins possess additional, highly divergent outer domain(s), suggesting varied functional potential. In this study, we report atomic structures of flagellar filaments from three distinct bacterial species: Cupriavidus gilardii, Stenotrophomonas maltophilia, and Geovibrio thiophilus. Our findings reveal that the flagella from the facultative anaerobic G. thiophilus possesses a significantly more negatively charged surface, potentially enabling adhesion to positively charged minerals. Furthermore, we analyze all AlphaFold predicted structures for annotated bacterial flagellins, categorizing the flagellin outer domains into 682 structural clusters. This classification provides insights into the prevalence and experimental verification of these outer domains. Remarkably, two of the flagellar structures reported herein belong to a distinct cluster, indicating additional opportunities on the study of the functional diversity of flagellar outer domains. Our findings underscore the complexity of bacterial flagellins and open up possibilities for future studies into their varied roles beyond motility. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 45.4 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 16.5 KB 16.5 KB | Display Display | ![]() |
Images | ![]() | 196.8 KB | ||
Filedesc metadata | ![]() | 5.5 KB | ||
Others | ![]() ![]() | 929.1 MB 929.1 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9atbMC ![]() 9atlC ![]() 9au6C M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Map
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Annotation | cryo-EM of Cupriavidus gilardii flagellum | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.11 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #1
File | emd_43829_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_43829_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Flagellar filament
Entire | Name: Flagellar filament |
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Components |
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-Supramolecule #1: Flagellar filament
Supramolecule | Name: Flagellar filament / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Flagellin
Macromolecule | Name: Flagellin / type: protein_or_peptide / ID: 1 / Number of copies: 22 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 41.336453 KDa |
Sequence | String: MAQVINTNSL SLMTQNNLNT SQSALNTAIQ RLSSGLRINS AKDDAAGQAI ANRFTANIKG LTQAQRNAND GISLAQTTEG ALTEVNNNL QRIRELSVQA ATGSNSASDL QSIQDEIKQR LEEINRVSEQ TQFNGVKVLA KDTKMNIQVG ANDGEIIAID L KEITAKTL ...String: MAQVINTNSL SLMTQNNLNT SQSALNTAIQ RLSSGLRINS AKDDAAGQAI ANRFTANIKG LTQAQRNAND GISLAQTTEG ALTEVNNNL QRIRELSVQA ATGSNSASDL QSIQDEIKQR LEEINRVSEQ TQFNGVKVLA KDTKMNIQVG ANDGEIIAID L KEITAKTL GLDGFNVSGP KGTPAALVAA DYQAAYGTTT NVTTTAVTES SANALAGRLG VANGSVALAA TAEKDDNGNW YA TVTITAG SATEVSTLKA KGFEVENGVA KEFYIALDPQ SADVTTTAGT AAFALDTANI QLSSITSGAS SNPLAKLDAA LAD VDTLRS SLGAVQNRFD SVISNLGTTV TNLSASRSRI QDADYATEVS NMTRAQILQQ AGTSVLAQAN QTTQNVLSLL R UniProtKB: Flagellin |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | helical reconstruction |
Aggregation state | filament |
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Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Final reconstruction | Applied symmetry - Helical parameters - Δz: 110.25 Å Applied symmetry - Helical parameters - Δ&Phi: -0.61 ° Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric) Resolution.type: BY AUTHOR / Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF Details: The helical symmetry was relaxed in the final reconstruction Number images used: 223582 |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
Startup model | Type of model: NONE |
Final angle assignment | Type: NOT APPLICABLE |