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- EMDB-6114: A molecular ruler determines the repeat length in eukaryotic cili... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-6114 | |||||||||
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Title | A molecular ruler determines the repeat length in eukaryotic cilia and flagella | |||||||||
![]() | FAP172-C-BCCP axoneme | |||||||||
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![]() | cryo-electron tomography / cilia and flagella / molecular ruler / FAP59 / FAP172 / CCDC39 / CCDC40 | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | subtomogram averaging / cryo EM / Resolution: 51.0 Å | |||||||||
![]() | Oda T / Yanagisawa H / Kamiya R / Kikkawa M | |||||||||
![]() | ![]() Title: A molecular ruler determines the repeat length in eukaryotic cilia and flagella. Authors: Toshiyuki Oda / Haruaki Yanagisawa / Ritsu Kamiya / Masahide Kikkawa / ![]() Abstract: Existence of cellular structures with specific size raises a fundamental question in biology: How do cells measure length? One conceptual answer to this question is by a molecular ruler, but examples ...Existence of cellular structures with specific size raises a fundamental question in biology: How do cells measure length? One conceptual answer to this question is by a molecular ruler, but examples of such rulers in eukaryotes are lacking. In this work, we identified a molecular ruler in eukaryotic cilia and flagella. Using cryo-electron tomography, we found that FAP59 and FAP172 form a 96-nanometer (nm)-long complex in Chlamydomonas flagella and that the absence of the complex disrupted 96-nm repeats of axonemes. Furthermore, lengthening of the FAP59/172 complex by domain duplication resulted in extension of the repeats up to 128 nm, as well as duplication of specific axonemal components. Thus, the FAP59/172 complex is the molecular ruler that determines the 96-nm repeat length and arrangements of components in cilia and flagella. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 20.8 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 8.4 KB 8.4 KB | Display Display | ![]() |
Images | ![]() ![]() | 34.3 KB 2.2 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 78 KB | Display | ![]() |
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Full document | ![]() | 77.1 KB | Display | |
Data in XML | ![]() | 493 B | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6108C ![]() 6109C ![]() 6110C ![]() 6111C ![]() 6112C ![]() 6113C ![]() 6115C ![]() 6116C ![]() 6117C C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | FAP172-C-BCCP axoneme | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 6.07 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : FAP172-C-BCCP axoneme labeled with streptavidin
Entire | Name: FAP172-C-BCCP axoneme labeled with streptavidin |
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Components |
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-Supramolecule #1000: FAP172-C-BCCP axoneme labeled with streptavidin
Supramolecule | Name: FAP172-C-BCCP axoneme labeled with streptavidin / type: sample / ID: 1000 / Number unique components: 1 |
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-Supramolecule #1: axoneme
Supramolecule | Name: axoneme / type: organelle_or_cellular_component / ID: 1 / Recombinant expression: No / Database: NCBI |
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Source (natural) | Organism: ![]() ![]() |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | subtomogram averaging |
Aggregation state | cell |
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Sample preparation
Concentration | 0.01 mg/mL |
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Buffer | pH: 7.2 Details: 30 mM Hepes-NaOH, 5 mM MgCl2, 1 mM DTT, 1 mM EGTA, 50 mM NaCl |
Grid | Details: 300 mesh copper grid with holey carbon support, glow discharged in the air |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 98 % / Chamber temperature: 93 K / Instrument: LEICA EM GP / Method: Blot for 5 seconds before plunging |
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Electron microscopy
Microscope | JEOL 3100FFC |
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Specialist optics | Energy filter - Name: Omega / Energy filter - Lower energy threshold: 0.0 eV / Energy filter - Upper energy threshold: 20.0 eV |
Date | Mar 23, 2014 |
Image recording | Category: CCD / Film or detector model: TVIPS TEMCAM-F416 (4k x 4k) / Average electron dose: 100 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 7.0 µm / Nominal defocus min: 6.0 µm / Nominal magnification: 25700 |
Sample stage | Specimen holder model: GATAN LIQUID NITROGEN / Tilt series - Axis1 - Min angle: -65 ° / Tilt series - Axis1 - Max angle: 65 ° |
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Image processing
Details | Number of tilts (projections) used in 3D reconstruction: 65 Tomographic tilt angle increment: 2 |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 51.0 Å / Resolution method: OTHER |