5A8L

Human eRF1 and the hCMV nascent peptide in the translation termination complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.8 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 2.0 of the entry. See complete history

Literature

Structure of a Human Translation Termination Complex.

Matheisl, S.Berninghausen, O.Becker, T.Beckmann, R.

(2015) Nucleic Acids Res. 43: 8615

  • DOI: 10.1093/nar/gkv909

  • PubMed Abstract: 
  • In contrast to bacteria that have two release factors, RF1 and RF2, eukaryotes only possess one unrelated release factor eRF1, which recognizes all three stop codons of the mRNA and hydrolyses the peptidyl-tRNA bond. While the molecular basis for bac ...

    In contrast to bacteria that have two release factors, RF1 and RF2, eukaryotes only possess one unrelated release factor eRF1, which recognizes all three stop codons of the mRNA and hydrolyses the peptidyl-tRNA bond. While the molecular basis for bacterial termination has been elucidated, high-resolution structures of eukaryotic termination complexes have been lacking. Here we present a 3.8 Å structure of a human translation termination complex with eRF1 decoding a UAA(A) stop codon. The complex was formed using the human cytomegalovirus (hCMV) stalling peptide, which perturbs the peptidyltransferase center (PTC) to silence the hydrolysis activity of eRF1. Moreover, unlike sense codons or bacterial stop codons, the UAA stop codon adopts a U-turn-like conformation within a pocket formed by eRF1 and the ribosome. Inducing the U-turn conformation for stop codon recognition rationalizes how decoding by eRF1 includes monitoring geometry in order to discriminate against sense codons.


    Organizational Affiliation

    Gene Center and Center for integrated Protein Science Munich, Department of Biochemistry, Feodor-Lynen-Str. 25, University of Munich, 81377 Munich, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L17
D
184Homo sapiensMutation(s): 0 
Gene Names: RPL17
Find proteins for P18621 (Homo sapiens)
Go to Gene View: RPL17
Go to UniProtKB:  P18621
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L12
G
165Homo sapiensMutation(s): 0 
Gene Names: RPL12
Find proteins for P30050 (Homo sapiens)
Go to Gene View: RPL12
Go to UniProtKB:  P30050
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L4
H
427Homo sapiensMutation(s): 0 
Gene Names: RPL4 (RPL1)
Find proteins for P36578 (Homo sapiens)
Go to Gene View: RPL4
Go to UniProtKB:  P36578
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
EUKARYOTIC RELEASE FACTOR ERF1
Q
431Homo sapiensMutation(s): 0 
Gene Names: ETF1 (ERF1, RF1, SUP45L1)
Find proteins for P62495 (Homo sapiens)
Go to Gene View: ETF1
Go to UniProtKB:  P62495
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
NASCENT CHAIN
Z
22N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 1
MoleculeChainsLengthOrganism
28S RIBOSOMAL RNAA5025Homo sapiens
Entity ID: 2
MoleculeChainsLengthOrganism
HUMAN 18S RIBOSOMAL RNAB1869Homo sapiens
Entity ID: 6
MoleculeChainsLengthOrganism
P-SITE TRNAP18Homo sapiens
Entity ID: 8
MoleculeChainsLengthOrganism
MRNAR9Homo sapiens
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.8 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-12-02
    Type: Initial release
  • Version 2.0: 2017-08-23
    Type: Atomic model, Data collection, Derived calculations