5A8L

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


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report



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
  • Structures With Same Primary Citation

  • 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 beckmann@lmb.uni-muenchen.de.



Macromolecules

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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 UniProtKB:  P18621
NIH Common Fund Data Resources
PHAROS  P18621
Protein Feature View
  • Reference Sequence

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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 UniProtKB:  P30050
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PHAROS  P30050
Protein Feature View
  • Reference Sequence

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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L4
H
427Homo sapiensMutation(s): 0 
Gene Names: RPL4RPL1
Find proteins for P36578 (Homo sapiens)
Go to UniProtKB:  P36578
NIH Common Fund Data Resources
PHAROS  P36578
Protein Feature View
  • Reference Sequence

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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
EUKARYOTIC RELEASE FACTOR ERF1
Q
431Homo sapiensMutation(s): 0 
Gene Names: ETF1ERF1RF1SUP45L1
Find proteins for P62495 (Homo sapiens)
Go to UniProtKB:  P62495
NIH Common Fund Data Resources
PHAROS  P62495
Protein Feature View
  • Reference Sequence

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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
NASCENT CHAIN
Z
22Homo sapiensMutation(s): 0 
Protein Feature View
  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganism
HUMAN 18S RIBOSOMAL RNAB1869Homo sapiens

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Entity ID: 1
MoleculeChainsLengthOrganism
28S RIBOSOMAL RNAA5025Homo sapiens
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Entity ID: 6
MoleculeChainsLengthOrganism
P-SITE TRNAP18Homo sapiens
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Entity ID: 8
MoleculeChainsLengthOrganism
MRNAR9Homo sapiens
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History 

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