7JTK

Radial spoke 1 isolated from Chlamydomonas reinhardtii


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structures of radial spokes and associated complexes important for ciliary motility.

Gui, M.Ma, M.Sze-Tu, E.Wang, X.Koh, F.Zhong, E.D.Berger, B.Davis, J.H.Dutcher, S.K.Zhang, R.Brown, A.

(2021) Nat Struct Mol Biol 28: 29-37

  • DOI: 10.1038/s41594-020-00530-0
  • Primary Citation of Related Structures:  
    7JTK, 7JTS, 7JU4

  • PubMed 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 complementary cryo-EM strategies to determine structures of the major mechanoregulators that bind ciliary doublet microtubules in Chlamydomonas reinhardtii ...

    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.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA. alan_brown@hms.harvard.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 1A, B814Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP1CHLREDRAFT_196412
UniProt
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UniProt GroupQ27YU0
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 2C, D738Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP2CHLREDRAFT_186281
UniProt
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UniProt GroupQ6UBQ3
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 3E, F516Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP3
UniProt
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 4G, H465Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP4
UniProt
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 5I, J521Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP5CHLREDRAFT_190792
EC: 1
UniProt
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 6K, L459Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP6
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 7M, N500Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: CHLRE_07g347050v5
UniProt
Find proteins for A0A2K3DL29 (Chlamydomonas reinhardtii)
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UniProt GroupA0A2K3DL29
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 9O, P, Q, R269Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP9CHLRE_07g330200v5CHLREDRAFT_182960
UniProt
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 10S, T216Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP10CHLRE_01g005450v5CHLREDRAFT_185792
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 11U, V204Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: PF25RSP11CHLRE_10g465250v5CHLREDRAFT_182635
UniProt
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 12W181Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: CYN17CHLRE_02g114700v5CHLREDRAFT_141642
EC: 5.2.1.8
UniProt
Find proteins for A8I2U9 (Chlamydomonas reinhardtii)
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 14X387Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP14FAP132CHLREDRAFT_172252
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 16Y,
Z,
LA [auth y],
MA [auth z]
346Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP16CHLRE_12g511050v5CHLREDRAFT_78044
UniProt
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
Dynein 8 kDa light chain, flagellar outer armAA [auth a],
BA [auth b],
CA [auth c],
DA [auth d]
91Chlamydomonas reinhardtiiMutation(s): 0 
UniProt
Find proteins for Q39580 (Chlamydomonas reinhardtii)
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Entity ID: 15
MoleculeChainsSequence LengthOrganismDetailsImage
Unknown proteinEA [auth e]34Chlamydomonas reinhardtiiMutation(s): 0 
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Entity ID: 16
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar radial spoke protein 23FA [auth i],
GA [auth j]
586Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: RSP23CHLRE_16g654300v5CHLREDRAFT_139197
EC: 2.7.4.6
UniProt
Find proteins for Q69B19 (Chlamydomonas reinhardtii)
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Entity ID: 17
MoleculeChainsSequence LengthOrganismDetailsImage
Cytochrome b5 heme-binding domain-containing proteinHA [auth k]230Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: CHLRE_09g403200v5
UniProt
Find proteins for A0A2K3DCN8 (Chlamydomonas reinhardtii)
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Entity ID: 18
MoleculeChainsSequence LengthOrganismDetailsImage
Uncharacterized proteinIA [auth s]682Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: CHLRE_12g502000v5
UniProt
Find proteins for A0A2K3D359 (Chlamydomonas reinhardtii)
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Entity ID: 19
MoleculeChainsSequence LengthOrganismDetailsImage
Predicted proteinJA [auth u],
KA [auth v]
70Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: CHLRE_12g495550v5CHLREDRAFT_194127
UniProt
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Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2020-12-16
    Type: Initial release
  • Version 1.1: 2020-12-30
    Changes: Database references
  • Version 1.2: 2021-01-27
    Changes: Database references