Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 116.78 kDa 
• Atom Count: 8089 
• Modelled Residue Count: 1030 
• Deposited Residue Count: 1042 
• Unique protein chains: 3

3J1U

Low affinity dynein microtubule binding domain - tubulin complex

• PDB DOI: 10.2210/pdb3J1U/pdb
• EM Map EMD-5439:EMDBEMDataResource

• Classification: MOTOR PROTEIN/STRUCTURAL PROTEIN
• Organism(s): Mus musculus, Bos taurus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2012-06-25 Released: 2012-09-26 
• Deposition Author(s): Redwine, W.B., Hernandez-Lopez, R., Zou, S., Huang, J., Reck-Peterson, S.L., Leschziner, A.E.

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 9.70 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Literature

Structural basis for microtubule binding and release by dynein.

Redwine, W.B., Hernandez-Lopez, R., Zou, S., Huang, J., Reck-Peterson, S.L., Leschziner, A.E.

(2012) Science 337: 1532-1536

• PubMed: 22997337 
• DOI: 10.1126/science.1224151
• Primary Citation of Related Structures:  
  3J1T, 3J1U


• PubMed Abstract: 
  

Cytoplasmic dynein is a microtubule-based motor required for intracellular transport and cell division. Its movement involves coupling cycles of track binding and release with cycles of force-generating nucleotide hydrolysis. How this is accomplished given the ~25 nanometers separating dynein's track- and nucleotide-binding sites is not understood. Here, we present a subnanometer-resolution structure of dynein's microtubule-binding domain bound to microtubules by cryo-electron microscopy that was used to generate a pseudo-atomic model of the complex with molecular dynamics. We identified large rearrangements triggered by track binding and specific interactions, confirmed by mutagenesis and single-molecule motility assays, which tune dynein's affinity for microtubules. Our results provide a molecular model for how dynein's binding to microtubules is communicated to the rest of the motor.

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Organizational Affiliation: 

Department of Molecular and Cellular Biology, Harvard University, 52 Oxford Street, Cambridge, MA 02138, United States.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cytoplasmic dynein 1 heavy chain 1, seryl t-RNA synthetase chimera	A	164	Mus musculus	Mutation(s): 0  Gene Names: Dync1h1, Dhc1, Dnch1, Dnchc1, Dyhc
UniProt & NIH Common Fund Data Resources
Find proteins for Q9JHU4 (Mus musculus) Explore Q9JHU4  Go to UniProtKB:  Q9JHU4
IMPC:  MGI:103147

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Tubulin alpha-1B chain	B	451	Bos taurus	Mutation(s): 0
UniProt
Find proteins for P81947 (Bos taurus) Explore P81947  Go to UniProtKB:  P81947

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Tubulin beta-2B chain	C	427	Bos taurus	Mutation(s): 0  Gene Names: TUBB2B
UniProt
Find proteins for Q6B856 (Bos taurus) Explore Q6B856  Go to UniProtKB:  Q6B856

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 9.70 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-06-25 
• Released Date: 2012-09-26 
Deposition Author(s): Redwine, W.B., Hernandez-Lopez, R., Zou, S., Huang, J., Reck-Peterson, S.L., Leschziner, A.E.

Revision History  

• Version 1.0: 2012-09-26
  Type: Initial release
  
• Version 1.1: 2012-10-03
  Changes: Database references
• Version 1.2: 2014-08-27
  Changes: Other
• Version 1.3: 2018-07-18
  Changes: Author supporting evidence, Data collection