5NVL

Crystal structure of the human 4EHP-GIGYF2 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

GIGYF1/2 proteins use auxiliary sequences to selectively bind to 4EHP and repress target mRNA expression.

Peter, D.Weber, R.Sandmeir, F.Wohlbold, L.Helms, S.Bawankar, P.Valkov, E.Igreja, C.Izaurralde, E.

(2017) Genes Dev. 31: 1147-1161

  • DOI: 10.1101/gad.299420.117
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The eIF4E homologous protein (4EHP) is thought to repress translation by competing with eIF4E for binding to the 5' cap structure of specific mRNAs to which it is recruited through interactions with various proteins, including the GRB10-interacting G ...

    The eIF4E homologous protein (4EHP) is thought to repress translation by competing with eIF4E for binding to the 5' cap structure of specific mRNAs to which it is recruited through interactions with various proteins, including the GRB10-interacting GYF (glycine-tyrosine-phenylalanine domain) proteins 1 and 2 (GIGYF1/2). Despite its similarity to eIF4E, 4EHP does not interact with eIF4G and therefore fails to initiate translation. In contrast to eIF4G, GIGYF1/2 bind selectively to 4EHP but not eIF4E. Here, we present crystal structures of the 4EHP-binding regions of GIGYF1 and GIGYF2 in complex with 4EHP, which reveal the molecular basis for the selectivity of the GIGYF1/2 proteins for 4EHP. Complementation assays in a GIGYF1/2-null cell line using structure-based mutants indicate that 4EHP requires interactions with GIGYF1/2 to down-regulate target mRNA expression. Our studies provide structural insights into the assembly of 4EHP-GIGYF1/2 repressor complexes and reveal that rather than merely facilitating 4EHP recruitment to transcripts, GIGYF1/2 proteins are required for repressive activity.


    Organizational Affiliation

    Department of Biochemistry, Max Planck Institute for Developmental Biology, 72076 Tübingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Eukaryotic translation initiation factor 4E type 2
A, C
189Homo sapiensMutation(s): 0 
Gene Names: EIF4E2 (EIF4EL3)
Find proteins for O60573 (Homo sapiens)
Go to Gene View: EIF4E2
Go to UniProtKB:  O60573
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
GRB10-interacting GYF protein 2
B, D
75Homo sapiensMutation(s): 0 
Gene Names: GIGYF2 (KIAA0642, PERQ2, TNRC15)
Find proteins for Q6Y7W6 (Homo sapiens)
Go to Gene View: GIGYF2
Go to UniProtKB:  Q6Y7W6
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.205 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 82.550α = 90.00
b = 82.550β = 90.00
c = 148.490γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
PHENIXrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2017-05-04 
  • Released Date: 2017-07-26 
  • Deposition Author(s): Peter, D., Valkov, E.

Revision History 

  • Version 1.0: 2017-07-26
    Type: Initial release
  • Version 1.1: 2018-01-24
    Type: Source and taxonomy