3T5X

PCID2:DSS1 Structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.12 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.205 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for the assembly and nucleic acid binding of the TREX-2 transcription-export complex.

Ellisdon, A.M.Dimitrova, L.Hurt, E.Stewart, M.

(2012) Nat Struct Mol Biol 19: 328-336

  • DOI: 10.1038/nsmb.2235
  • Primary Citation of Related Structures:  
    3T5V, 3T5X

  • PubMed Abstract: 
  • The conserved TREX-2 transcription-export complex integrates transcription and processing of many actively transcribed nascent mRNAs with the recruitment of export factors at nuclear pores and also contributes to transcriptional memory and genomic stability ...

    The conserved TREX-2 transcription-export complex integrates transcription and processing of many actively transcribed nascent mRNAs with the recruitment of export factors at nuclear pores and also contributes to transcriptional memory and genomic stability. We report the crystal structure of the Sac3-Thp1-Sem1 segment of Saccharomyces cerevisiae TREX-2 that interfaces with the gene expression machinery. Sac3-Thp1-Sem1 forms a previously uncharacterized PCI-domain complex characterized by the juxtaposition of Sac3 and Thp1 winged helix domains, forming a platform that mediates nucleic acid binding. Our structure-guided mutations support the idea that the Thp1-Sac3 interaction is an essential requirement for mRNA binding and for the coupling of transcription and processing to mRNP assembly and export. These results provide insight into how newly synthesized transcripts are efficiently transferred from TREX-2 to the principal mRNA export factor, and they reveal how Sem1 stabilizes PCI domain-containing proteins and promotes complex assembly.


    Organizational Affiliation

    Medical Research Council Laboratory of Molecular Biology, Cambridge, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PCI domain-containing protein 2A203Homo sapiensMutation(s): 0 
Gene Names: PCID2HT004
Find proteins for Q5JVF3 (Homo sapiens)
Explore Q5JVF3 
Go to UniProtKB:  Q5JVF3
NIH Common Fund Data Resources
PHAROS:  Q5JVF3
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome complex subunit DSS1B70Homo sapiensMutation(s): 0 
Gene Names: SHFM1DSS1SHFDG1SEM1C7orf76
Find proteins for P60896 (Homo sapiens)
Explore P60896 
Go to UniProtKB:  P60896
NIH Common Fund Data Resources
PHAROS:  P60896
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.12 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.205 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.522α = 90
b = 70.522β = 90
c = 95.417γ = 120
Software Package:
Software NamePurpose
MAR345dtbdata collection
PHENIXmodel building
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-02-22
    Type: Initial release
  • Version 1.1: 2012-03-21
    Changes: Database references