3FWC

Sac3:Sus1:Cdc31 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.214 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Sus1, Cdc31, and the Sac3 CID region form a conserved interaction platform that promotes nuclear pore association and mRNA export.

Jani, D.Lutz, S.Marshall, N.J.Fischer, T.Kohler, A.Ellisdon, A.M.Hurt, E.Stewart, M.

(2009) Mol Cell 33: 727-737

  • DOI: 10.1016/j.molcel.2009.01.033
  • Primary Citation of Related Structures:  
    3FWB, 3FWC

  • PubMed Abstract: 
  • The yeast Sac3:Cdc31:Sus1:Thp1 (TREX-2) complex facilitates the repositioning and association of actively transcribing genes with nuclear pores (NPCs)-"gene gating"-that is central to integrating transcription, processing, and mRNA nuclear export. We pre ...

    The yeast Sac3:Cdc31:Sus1:Thp1 (TREX-2) complex facilitates the repositioning and association of actively transcribing genes with nuclear pores (NPCs)-"gene gating"-that is central to integrating transcription, processing, and mRNA nuclear export. We present here the crystal structure of Sus1 and Cdc31 bound to a central region of Sac3 (the CID domain) that is crucial for its function. Sac3(CID) forms a long, gently undulating alpha helix around which one Cdc31 and two Sus1 chains are wrapped. Sus1 has an articulated helical hairpin fold that facilitates its wrapping around Sac3. In vivo studies using engineered mutations that selectively disrupted binding of individual chains to Sac3 indicated that Sus1 and Cdc31 function synergistically to promote NPC association of TREX-2 and mRNA nuclear export. These data indicate Sac3(CID) provides a scaffold within TREX-2 to integrate interactions between protein complexes to facilitate the coupling of transcription and mRNA export during gene expression.


    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
Cell division control protein 31 AEIM161Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: CDC31DSK1YOR257W
Find proteins for P06704 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P06704 
Go to UniProtKB:  P06704
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Nuclear mRNA export protein SAC3 BFJN85Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: LEP1SAC3YD8358.13YDR159W
Find proteins for P46674 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P46674 
Go to UniProtKB:  P46674
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Protein SUS1 CDGHKLOP96Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: SUS1YBR111W-A
Find proteins for Q6WNK7 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q6WNK7 
Go to UniProtKB:  Q6WNK7
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.214 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.59α = 90
b = 122.71β = 95.75
c = 128.71γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2009-01-17 
  • Released Date: 2009-04-14 
  • Deposition Author(s): Stewart, M., Jani, D.

Revision History 

  • Version 1.0: 2009-04-14
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance