3E1Y

Crystal structure of human eRF1/eRF3 complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.262 

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Literature

Structural insights into eRF3 and stop codon recognition by eRF1

Cheng, Z., Saito, K., Pisarev, A.V., Wada, M., Pisareva, V.P., Pestova, T.V., Gajda, M., Round, A., Kong, C., Lim, M., Nakamura, Y., Svergun, D.I., Ito, K., Song, H.

(2009) Genes Dev 23: 1106-1118

  • DOI: 10.1101/gad.1770109
  • Primary Citation of Related Structures:  
    3E1Y, 3E20

  • PubMed Abstract: 

    • Eukaryotic translation termination is mediated by two interacting release factors, eRF1 and eRF3, which act cooperatively to ensure efficient stop codon recognition and fast polypeptide release. The crystal structures of human and Schizosaccharomyces pombe full-length eRF1 in complex with eRF3 lacking the GTPase domain revealed details of the interaction between these two factors and marked conformational changes in eRF1 that occur upon binding to eRF3, leading eRF1 to resemble a tRNA molecule ...

    Eukaryotic translation termination is mediated by two interacting release factors, eRF1 and eRF3, which act cooperatively to ensure efficient stop codon recognition and fast polypeptide release. The crystal structures of human and Schizosaccharomyces pombe full-length eRF1 in complex with eRF3 lacking the GTPase domain revealed details of the interaction between these two factors and marked conformational changes in eRF1 that occur upon binding to eRF3, leading eRF1 to resemble a tRNA molecule. Small-angle X-ray scattering analysis of the eRF1/eRF3/GTP complex suggested that eRF1's M domain contacts eRF3's GTPase domain. Consistently, mutation of Arg192, which is predicted to come in close contact with the switch regions of eRF3, revealed its important role for eRF1's stimulatory effect on eRF3's GTPase activity. An ATP molecule used as a crystallization additive was bound in eRF1's putative decoding area. Mutational analysis of the ATP-binding site shed light on the mechanism of stop codon recognition by eRF1.

    Organizational Affiliation: 

    Cancer and Developmental Cell Biology Division, Institute of Molecular and Cell Biology, Agency for Science, Technology, and Research (A*STAR), Singapore, Singapore.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic peptide chain release factor subunit 1A, B, C, D451Homo sapiensMutation(s): 0 
Gene Names: ETF1, ERF1, RF1, SUP45L1
UniProt & NIH Common Fund Data Resources
Find proteins for P62495 (Homo sapiens)
Explore P62495 
Go to UniProtKB:  P62495
PHAROS:  P62495
GTEx:  ENSG00000120705 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP62495
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic peptide chain release factor GTP-binding subunit ERF3AE, F, G, H204Homo sapiensMutation(s): 0 
Gene Names: GSPT1, ERF3A
UniProt & NIH Common Fund Data Resources
Find proteins for P15170 (Homo sapiens)
Explore P15170 
Go to UniProtKB:  P15170
PHAROS:  P15170
GTEx:  ENSG00000103342 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP15170
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP
Download Ideal Coordinates CCD File 
I [auth A],
J [auth B]		ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.262 
  • Space Group: P 43
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 173.966α = 90
b = 173.966β = 90
c = 119.824γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
ADSCdata collection
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-05-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance