4DHX

ENY2:GANP complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 

wwPDB Validation 3D Report Full Report



Literature

Functional and structural characterization of the mammalian TREX-2 complex that links transcription with nuclear messenger RNA export.

Jani, D.Lutz, S.Hurt, E.Laskey, R.A.Stewart, M.Wickramasinghe, V.O.

(2012) Nucleic Acids Res 40: 4562-4573

  • DOI: 10.1093/nar/gks059
  • Primary Citation of Related Structures:  
    4DHX

  • PubMed Abstract: 
  • Export of messenger RNA (mRNA) from the nucleus to the cytoplasm is a critical step in the gene expression pathway of eukaryotic cells. Here, we report the functional and structural characterization of the mammalian TREX-2 complex and show how it lin ...

    Export of messenger RNA (mRNA) from the nucleus to the cytoplasm is a critical step in the gene expression pathway of eukaryotic cells. Here, we report the functional and structural characterization of the mammalian TREX-2 complex and show how it links transcription/processing with nuclear mRNA export. Mammalian TREX-2 is based on a germinal-centre associated nuclear protein (GANP) scaffold to which ENY2, PCID2 and centrins bind and depletion of any of these components inhibits mRNA export. The crystal structure of the GANP:ENY2 complex shows that two ENY2 chains interact directly with GANP, but they have different orientations from those observed on yeast Sac3. GANP is required to recruit ENY2 to nuclear pore complexes (NPCs), but ENY2 is not necessary to recruit GANP, which requires both its CID and MCM3AP domains, together with nucleoporin Nup153. GANP and ENY2 associate with RNA polymerase II and inhibition of mRNA processing redistributes GANP from NPCs into nuclear foci indicating that mammalian TREX-2 is associated with transcription. Thus, we implicate TREX-2 as an integral component of the mammalian mRNA export machinery where it links transcription and nuclear export by facilitating the transfer of mature mRNPs from the nuclear interior to NPCs.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
80 kDa MCM3-associated proteinA, D75Homo sapiensMutation(s): 0 
Gene Names: MCM3APGANPKIAA0572MAP80
EC: 2.3.1.48 (UniProt), 2.3.1 (UniProt)
Find proteins for O60318 (Homo sapiens)
Explore O60318 
Go to UniProtKB:  O60318
NIH Common Fund Data Resources
PHAROS  O60318
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Enhancer of yellow 2 transcription factor homologB, C, E, F101Homo sapiensMutation(s): 0 
Gene Names: ENY2DC6
Find proteins for Q9NPA8 (Homo sapiens)
Explore Q9NPA8 
Go to UniProtKB:  Q9NPA8
NIH Common Fund Data Resources
PHAROS  Q9NPA8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.592α = 90
b = 76.124β = 117.69
c = 70.612γ = 90
Software Package:
Software NamePurpose
MAR345dtbdata collection
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2012-01-30 
  • Released Date: 2012-06-13 
  • Deposition Author(s): Stewart, M., Jani, D.

Revision History 

  • Version 1.0: 2012-06-13
    Type: Initial release