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- PDB-7ju4: Radial spoke 2 stalk, IDAc, and N-DRC attached with doublet micro... -
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Open data
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Basic information
Entry | Database: PDB / ID: 7ju4 | ||||||
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Title | Radial spoke 2 stalk, IDAc, and N-DRC attached with doublet microtubule | ||||||
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![]() | STRUCTURAL PROTEIN / cilia / native / complex / microtubule / mechanoregulation | ||||||
Function / homology | ![]() inner dynein arm / axonemal dynein complex assembly / inner dynein arm assembly / axonemal dynein complex / cilium-dependent cell motility / cilium movement involved in cell motility / 9+2 motile cilium / dynein heavy chain binding / cilium movement / axoneme assembly ...inner dynein arm / axonemal dynein complex assembly / inner dynein arm assembly / axonemal dynein complex / cilium-dependent cell motility / cilium movement involved in cell motility / 9+2 motile cilium / dynein heavy chain binding / cilium movement / axoneme assembly / motile cilium assembly / ciliary plasm / dynein complex / motile cilium / axoneme / microtubule-based process / GTPase activator activity / acrosomal vesicle / cell projection / small GTPase binding / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / structural constituent of cytoskeleton / microtubule binding / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / microtubule / cytoskeleton / hydrolase activity / cilium / GTPase activity / calcium ion binding / GTP binding / ATP binding / metal ion binding / membrane / cytoplasm Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | ||||||
![]() | Gui, M. / Ma, M. / Sze-Tu, E. / Wang, X. / Koh, F. / Zhong, E. / Berger, B. / Davis, J. / Dutcher, S. / Zhang, R. / Brown, A. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Structures of radial spokes and associated complexes important for ciliary motility. Authors: Miao Gui / Meisheng Ma / Erica Sze-Tu / Xiangli Wang / Fujiet Koh / Ellen D Zhong / Bonnie Berger / Joseph H Davis / Susan K Dutcher / Rui Zhang / Alan Brown / ![]() ![]() Abstract: In motile cilia, a mechanoregulatory network is responsible for converting the action of thousands of dynein motors bound to doublet microtubules into a single propulsive waveform. Here, we use two ...In motile cilia, a mechanoregulatory network is responsible for converting the action of thousands of dynein motors bound to doublet microtubules into a single propulsive waveform. Here, we use two complementary cryo-EM strategies to determine structures of the major mechanoregulators that bind ciliary doublet microtubules in Chlamydomonas reinhardtii. We determine structures of isolated radial spoke RS1 and the microtubule-bound RS1, RS2 and the nexin-dynein regulatory complex (N-DRC). From these structures, we identify and build atomic models for 30 proteins, including 23 radial-spoke subunits. We reveal how mechanoregulatory complexes dock to doublet microtubules with regular 96-nm periodicity and communicate with one another. Additionally, we observe a direct and dynamically coupled association between RS2 and the dynein motor inner dynein arm subform c (IDAc), providing a molecular basis for the control of motor activity by mechanical signals. These structures advance our understanding of the role of mechanoregulation in defining the ciliary waveform. | ||||||
History |
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Structure visualization
Movie |
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 2.9 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 22481MC ![]() 7jtkC ![]() 7jtsC C: citing same article ( M: map data used to model this data |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Dynein regulatory complex subunit ... , 2 types, 3 molecules 042
#1: Protein | Mass: 55207.887 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #3: Protein | | Mass: 64986.242 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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-Protein , 11 types, 49 molecules 1368CGIKOQSWYiky79DHJLPRTXZjtz...
#2: Protein | Mass: 79454.133 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() | ||||||||||||||||
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#4: Protein | Mass: 6145.567 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() | ||||||||||||||||
#5: Protein | Mass: 49665.809 Da / Num. of mol.: 14 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #6: Protein | Mass: 49638.008 Da / Num. of mol.: 14 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #12: Protein | Mass: 10336.775 Da / Num. of mol.: 12 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #14: Protein | | Mass: 28418.410 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #15: Protein | | Mass: 40537.438 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #16: Protein | | Mass: 75037.945 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #17: Protein | | Mass: 41881.984 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #18: Protein | Mass: 28691.717 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #19: Protein | | Mass: 134440.578 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Flagellar-associated protein ... , 2 types, 2 molecules AB
#7: Protein | Mass: 105504.469 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#8: Protein | Mass: 101385.719 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Radial spoke protein ... , 4 types, 7 molecules EFMNUVl
#9: Protein | Mass: 56856.688 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #10: Protein | Mass: 54781.898 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #11: Protein | Mass: 21504.635 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #13: Protein | | Mass: 35302.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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-Non-polymers , 4 types, 43 molecules 






#20: Chemical | ChemComp-GDP / #21: Chemical | ChemComp-GTP / #22: Chemical | ChemComp-MG / #23: Chemical | ChemComp-ATP / | |
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-Details
Has ligand of interest | N |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: FILAMENT / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Complex of radial spoke 2 stalk, IDAc, and N-DRC attached with doublet microtubule Type: COMPLEX / Entity ID: #1-#19 / Source: NATURAL |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Buffer solution | pH: 7.4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: unspecified |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Average exposure time: 9 sec. / Electron dose: 38.9 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
Image scans | Movie frames/image: 30 / Used frames/image: 1-30 |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 202168 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | Space: REAL |