3JAO

Ciliary microtubule doublet

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 23.0 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

alpha- and beta-Tubulin Lattice of the Axonemal Microtubule Doublet and Binding Proteins Revealed by Single Particle Cryo-Electron Microscopy and Tomography.

Maheshwari, A., Obbineni, J.M., Bui, K.H., Shibata, K., Toyoshima, Y.Y., Ishikawa, T.

(2015) Structure 23: 1584-1595

  • DOI: 10.1016/j.str.2015.06.017
  • Primary Citation of Related Structures:  
    3JAO

  • PubMed Abstract: 

    • Microtubule doublet (MTD) is the main skeleton of cilia/flagella. Many proteins, such as dyneins and radial spokes, bind to MTD, and generate or regulate force. While the structure of the reconstituted microtubule has been solved at atomic resolution, na ...

    Microtubule doublet (MTD) is the main skeleton of cilia/flagella. Many proteins, such as dyneins and radial spokes, bind to MTD, and generate or regulate force. While the structure of the reconstituted microtubule has been solved at atomic resolution, nature of the axonemal MTD is still unclear. There are a few hypotheses of the lattice arrangement of its α- and β-tubulins, but it has not been described how dyneins and radial spokes bind to MTD. In this study, we analyzed the three-dimensional structure of Tetrahymena MTD at ∼19 Å resolution by single particle cryo-electron microscopy. To identify α- and β-tubulins, we combined image analysis of MTD with specific kinesin decoration. This work reveals that α- and β-tubulins form a B-lattice arrangement in the entire MTD with a seam at the outer junction. We revealed the unique way in which inner arm dyneins, radial spokes, and proteins inside MTD bind and bridge protofilaments.

    Organizational Affiliation: 

    Biomolecular Research Laboratory, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland. Electronic address: takashi.ishikawa@psi.ch.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin alpha 1A chain A451Tetrahymena thermophilaMutation(s): 0 
Find proteins for A0A0M3KKT1 (Tetrahymena thermophila)
Explore A0A0M3KKT1 
Go to UniProtKB:  A0A0M3KKT1
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin beta chain B445Tetrahymena thermophilaMutation(s): 0 
Find proteins for A0A0M3KKT2 (Tetrahymena thermophila)
Explore A0A0M3KKT2 
Go to UniProtKB:  A0A0M3KKT2
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP
Query on GTP
Download Ideal Coordinates CCD File 
A
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N		 Ligand Interaction
G2P
Query on G2P
Download Ideal Coordinates CCD File 
B
PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
C11 H18 N5 O13 P3
GXTIEXDFEKYVGY-KQYNXXCUSA-N		 Ligand Interaction
MG
Query on MG
Download Ideal Coordinates CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 23.0 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-08-05
    Type: Initial release
  • Version 1.1: 2015-09-16
    Changes: Database references
  • Version 1.2: 2018-07-18
    Changes: Data collection