3T5X

PCID2:DSS1 Structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.123 Å
  • R-Value Free: 0.231 
  • R-Value Work: 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:  

  • 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 st ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PCI domain-containing protein 2
A
203Homo sapiensMutation(s): 0 
Gene Names: PCID2
Find proteins for Q5JVF3 (Homo sapiens)
Go to Gene View: PCID2
Go to UniProtKB:  Q5JVF3
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
26S proteasome complex subunit DSS1
B
70Homo sapiensMutation(s): 0 
Gene Names: SEM1 (C7orf76, DSS1, SHFDG1, SHFM1)
Find proteins for P60896 (Homo sapiens)
Go to Gene View: SEM1
Go to UniProtKB:  P60896
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.123 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.205 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 70.522α = 90.00
b = 70.522β = 90.00
c = 95.417γ = 120.00
Software Package:
Software NamePurpose
MAR345dtbdata collection
PHENIXmodel building
MOSFLMdata reduction
SCALAdata scaling
PHENIXphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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