6BVZ

Importin alpha 3 in cargo free state


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.251 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural basis for importin alpha 3 specificity of W proteins in Hendra and Nipah viruses.

Smith, K.M.Tsimbalyuk, S.Edwards, M.R.Cross, E.M.Batra, J.Soares da Costa, T.P.Aragao, D.Basler, C.F.Forwood, J.K.

(2018) Nat Commun 9: 3703-3703

  • DOI: 10.1038/s41467-018-05928-5
  • Primary Citation of Related Structures:  
    6BVZ, 6BWB, 6BWA, 6BVT, 6BVV, 6BW9, 6BW0, 6BW1

  • PubMed Abstract: 
  • Seven human isoforms of importin α mediate nuclear import of cargo in a tissue- and isoform-specific manner. How nuclear import adaptors differentially interact with cargo harbouring the same nuclear localisation signal (NLS) remains poorly understood, as the NLS recognition region is highly conserved ...

    Seven human isoforms of importin α mediate nuclear import of cargo in a tissue- and isoform-specific manner. How nuclear import adaptors differentially interact with cargo harbouring the same nuclear localisation signal (NLS) remains poorly understood, as the NLS recognition region is highly conserved. Here, we provide a structural basis for the nuclear import specificity of W proteins in Hendra and Nipah viruses. We determine the structural interfaces of these cargo bound to importin α1 and α3, identifying a 2.4-fold more extensive interface and > 50-fold higher binding affinity for importin α3. Through the design of importin α1 and α3 chimeric and mutant proteins, together with structures of cargo-free importin α1 and α3 isoforms, we establish that the molecular basis of specificity resides in the differential positioning of the armadillo repeats 7 and 8. Overall, our study provides mechanistic insights into a range of important nucleocytoplasmic transport processes reliant on isoform adaptor specificity.


    Organizational Affiliation

    School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW, 2678, Australia. jforwood@csu.edu.au.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Importin subunit alpha-3A459Homo sapiensMutation(s): 0 
Gene Names: KPNA4QIP1
UniProt & NIH Common Fund Data Resources
Find proteins for O00629 (Homo sapiens)
Explore O00629 
Go to UniProtKB:  O00629
PHAROS:  O00629
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.251 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.118α = 90
b = 53.229β = 92.86
c = 91.309γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Australian Research Council (ARC)Australia--

Revision History  (Full details and data files)

  • Version 1.0: 2018-07-04
    Type: Initial release
  • Version 1.1: 2019-01-16
    Changes: Data collection, Database references
  • Version 1.2: 2019-02-20
    Changes: Author supporting evidence, Data collection
  • Version 1.3: 2020-01-01
    Changes: Author supporting evidence