5UMZ

Structure of TNRC6A NLS in complex with importin-alpha


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.182 
  • R-Value Work: 0.152 
  • R-Value Observed: 0.153 

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This is version 1.1 of the entry. See complete history


Literature

Structural characterisation of TNRC6A nuclear localisation signal in complex with importin-alpha.

Chaston, J.J.Stewart, A.G.Christie, M.

(2017) PLoS One 12: e0183587-e0183587

  • DOI: 10.1371/journal.pone.0183587
  • Primary Citation of Related Structures:  
    5UMZ

  • PubMed Abstract: 
  • The GW182/TNRC6 family of proteins are central scaffolds that link microRNA-associated Argonaute proteins to the cytoplasmic decay machinery for targeted mRNA degradation processes. Although nuclear roles for the GW182/TNRC6 proteins are unknown, recent reports have demonstrated nucleocytoplasmic shuttling activity that utilises the importin-α and importin-β transport receptors for nuclear translocation ...

    The GW182/TNRC6 family of proteins are central scaffolds that link microRNA-associated Argonaute proteins to the cytoplasmic decay machinery for targeted mRNA degradation processes. Although nuclear roles for the GW182/TNRC6 proteins are unknown, recent reports have demonstrated nucleocytoplasmic shuttling activity that utilises the importin-α and importin-β transport receptors for nuclear translocation. Here we describe the structure of mouse importin-α in complex with the TNRC6A nuclear localisation signal peptide. We further show that the interactions observed between TNRC6A and importin-α are conserved between mouse and human complexes. Our results highlight the ability of monopartite cNLS sequences to maximise contacts at the importin-α major binding site, as well as regions outside the main binding cavities.


    Organizational Affiliation

    St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Importin subunit alpha-1A [auth B]509Mus musculusMutation(s): 0 
Gene Names: Kpna2Rch1
UniProt & NIH Common Fund Data Resources
Find proteins for P52293 (Mus musculus)
Explore P52293 
Go to UniProtKB:  P52293
IMPC:  MGI:103561
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
TNRC6AC [auth D], B [auth E]13Mus musculusMutation(s): 0 
Gene Names: Tnrc6aKiaa1460
UniProt
Find proteins for Q3UHK8 (Mus musculus)
Explore Q3UHK8 
Go to UniProtKB:  Q3UHK8
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.182 
  • R-Value Work: 0.152 
  • R-Value Observed: 0.153 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.791α = 90
b = 89.98β = 90
c = 99.28γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
iMOSFLMdata reduction
Aimlessdata scaling
REFMACphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Australian Research Council (ARC)AustraliaDE160100608
National Health and Medical Research Council (NHMRC, Australia)AustraliaAPP1090408

Revision History  (Full details and data files)

  • Version 1.0: 2017-12-27
    Type: Initial release
  • Version 1.1: 2020-01-01
    Changes: Author supporting evidence