4DHX

ENY2:GANP complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

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

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
80 kDa MCM3-associated protein
A, D
75Homo sapiensMutation(s): 0 
Gene Names: MCM3AP (GANP, KIAA0572, MAP80)
Find proteins for O60318 (Homo sapiens)
Go to Gene View: MCM3AP
Go to UniProtKB:  O60318
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Enhancer of yellow 2 transcription factor homolog
B, C, E, F
101Homo sapiensMutation(s): 0 
Gene Names: ENY2
Find proteins for Q9NPA8 (Homo sapiens)
Go to Gene View: ENY2
Go to UniProtKB:  Q9NPA8
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.222 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 68.592α = 90.00
b = 76.124β = 117.69
c = 70.612γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
MAR345dtbdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



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