6ZYW image
Deposition Date 2020-08-03
Release Date 2021-01-20
Last Version Date 2024-05-01
Entry Detail
PDB ID:
6ZYW
Keywords:
Title:
Outer Dynein Arm-Shulin complex - overall structure (Tetrahymena thermophila)
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
8.78 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Dynein-1-alpha heavy chain, flagellar inner arm I1 complex protein, putative
Gene (Uniprot):TTHERM_00486600
Chain IDs:A
Chain Length:4168
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Outer arm dynein beta heavy chain
Gene (Uniprot):TTHERM_00499300
Chain IDs:B
Chain Length:4595
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein heavy chain, outer arm protein
Gene (Uniprot):TTHERM_01276420
Chain IDs:C
Chain Length:4620
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein intermediate chain 2
Gene (Uniprot):TTHERM_00487150
Chain IDs:D, R (auth: d)
Chain Length:667
Number of Molecules:2
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Flagellar outer dynein arm intermediate protein, putative
Gene (Uniprot):TTHERM_00079230
Chain IDs:E, S (auth: e)
Chain Length:670
Number of Molecules:2
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein light chain roadblock-type 2 protein
Gene (Uniprot):TTHERM_00348650
Chain IDs:F
Chain Length:133
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein light chain roadblock-type 2 protein
Gene (Uniprot):TTHERM_00030210
Chain IDs:G
Chain Length:103
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein light chain
Gene (Uniprot):TTHERM_00449029
Chain IDs:H
Chain Length:92
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein light chain
Gene (Uniprot):TTHERM_00716250
Chain IDs:I
Chain Length:110
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein light chain
Gene (Uniprot):TTHERM_00971840
Chain IDs:J
Chain Length:93
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein light chain
Gene (Uniprot):TTHERM_00023950
Chain IDs:K
Chain Length:111
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein light chain
Gene (Uniprot):TTHERM_000442909
Chain IDs:L
Chain Length:111
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein light chain
Gene (Uniprot):TTHERM_01079060
Chain IDs:M
Chain Length:87
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein light chain 2A
Chain IDs:N
Chain Length:132
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Dynein light chain tctex-type 1 protein
Gene (Uniprot):TTHERM_00392979
Chain IDs:O
Chain Length:117
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Thioredoxin
Gene (Uniprot):TTHERM_00623050
Chain IDs:P
Chain Length:110
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Polymer Type:polypeptide(L)
Molecule:Shulin
Gene (Uniprot):TTHERM_00122270
Chain IDs:Q (auth: Y)
Chain Length:1200
Number of Molecules:1
Biological Source:Tetrahymena thermophila SB210
Primary Citation
Shulin packages axonemal outer dynein arms for ciliary targeting.
Science 371 910 916 (2021)
PMID: 33632841 DOI: 10.1126/science.abe0526

Abstact

The main force generators in eukaryotic cilia and flagella are axonemal outer dynein arms (ODAs). During ciliogenesis, these ~1.8-megadalton complexes are assembled in the cytoplasm and targeted to cilia by an unknown mechanism. Here, we used the ciliate Tetrahymena to identify two factors (Q22YU3 and Q22MS1) that bind ODAs in the cytoplasm and are required for ODA delivery to cilia. Q22YU3, which we named Shulin, locked the ODA motor domains into a closed conformation and inhibited motor activity. Cryo-electron microscopy revealed how Shulin stabilized this compact form of ODAs by binding to the dynein tails. Our findings provide a molecular explanation for how newly assembled dyneins are packaged for delivery to the cilia.

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Primary Citation of related structures