5J8E

Crystal structure of human Hook3's conserved Hook domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.185 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Assembly and activation of dynein-dynactin by the cargo adaptor protein Hook3.

Schroeder, C.M.Vale, R.D.

(2016) J Cell Biol 214: 309-318

  • DOI: https://doi.org/10.1083/jcb.201604002
  • Primary Citation of Related Structures:  
    5J8E

  • PubMed Abstract: 

    Metazoan cytoplasmic dynein moves processively along microtubules with the aid of dynactin and an adaptor protein that joins dynein and dynactin into a stable ternary complex. Here, we examined how Hook3, a cargo adaptor involved in Golgi and endosome transport, forms a motile dynein-dynactin complex. We show that the conserved Hook domain interacts directly with the dynein light intermediate chain 1 (LIC1). By solving the crystal structure of the Hook domain and using structure-based mutagenesis, we identify two conserved surface residues that are each critical for LIC1 binding. Hook proteins with mutations in these residues fail to form a stable dynein-dynactin complex, revealing a crucial role for LIC1 in this interaction. We also identify a region of Hook3 specifically required for an allosteric activation of processive motility. Our work reveals the structural details of Hook3's interaction with dynein and offers insight into how cargo adaptors form processive dynein-dynactin motor complexes.


  • Organizational Affiliation

    The Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, CA 94158 Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein Hook homolog 3
A, B
165Homo sapiensMutation(s): 0 
Gene Names: HOOK3
UniProt & NIH Common Fund Data Resources
Find proteins for Q86VS8 (Homo sapiens)
Explore Q86VS8 
Go to UniProtKB:  Q86VS8
PHAROS:  Q86VS8
GTEx:  ENSG00000168172 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ86VS8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.185 
  • Space Group: P 2 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 33.92α = 90
b = 75.88β = 90
c = 111.85γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2016-04-27
    Type: Initial release
  • Version 1.1: 2016-08-17
    Changes: Database references
  • Version 1.2: 2017-11-22
    Changes: Database references, Derived calculations, Refinement description
  • Version 1.3: 2019-11-20
    Changes: Author supporting evidence
  • Version 1.4: 2023-09-27
    Changes: Data collection, Database references, Refinement description