4B6H

Structure of hDcp1a in complex with proline rich sequence of PNRC2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.239 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural Basis of the Pnrc2-Mediated Link between Mrna Surveillance and Decapping.

Lai, T.Cho, H.Liu, Z.Bowler, M.W.Piao, S.Parker, R.Kim, Y.K.Song, H.

(2012) Structure 20: 2025

  • DOI: https://doi.org/10.1016/j.str.2012.09.009
  • Primary Citation of Related Structures:  
    4B6H

  • PubMed Abstract: 

    Nonsense-mediated mRNA decay (NMD) is an important mRNA surveillance system, and human PNRC2 protein mediates the link between mRNA surveillance and decapping. However, the mechanism by which PNRC2 interacts with the mRNA surveillance machinery and stimulates NMD is unknown. Here, we present the crystal structure of Dcp1a in complex with PNRC2. The proline-rich region of PNRC2 is bound to the EVH1 domain of Dcp1a, while its NR-box mediates the interaction with the hyperphosphorylated Upf1. The mode of PNRC2 interaction with Dcp1a is distinct from those observed in other EVH1/proline-rich ligands interactions. Disruption of the interaction of PNRC2 with Dcp1a abolishes its P-body localization and ability to promote mRNA degradation when tethered to mRNAs. PNRC2 acts in synergy with Dcp1a to stimulate the decapping activity of Dcp2 by bridging the interaction between Dcp1a and Dcp2, suggesting that PNRC2 is a decapping coactivator in addition to its adaptor role in NMD.


  • Organizational Affiliation

    Institute of Molecular and Cell Biology, 61 Biopolis Drive, Singapore 138673.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MRNA-DECAPPING ENZYME 1A
A, B
134Homo sapiensMutation(s): 0 
EC: 3
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NPI6 (Homo sapiens)
Explore Q9NPI6 
Go to UniProtKB:  Q9NPI6
PHAROS:  Q9NPI6
GTEx:  ENSG00000272886 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NPI6
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PROLINE-RICH NUCLEAR RECEPTOR COACTIVATOR 2
C, D
135Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NPJ4 (Homo sapiens)
Explore Q9NPJ4 
Go to UniProtKB:  Q9NPJ4
PHAROS:  Q9NPJ4
GTEx:  ENSG00000189266 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NPJ4
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.239 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.091α = 90
b = 97.639β = 90
c = 109.688γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
SnBphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-03-06
    Type: Initial release
  • Version 1.1: 2024-05-08
    Changes: Data collection, Database references, Other