2VRH

Structure of the E. coli trigger factor bound to a translating ribosome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 19.0 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Molecular Mechanism and Structure of Trigger Factor Bound to the Translating Ribosome.

Merz, F.Boehringer, D.Schaffitzel, C.Preissler, S.Hoffmann, A.Maier, T.Rutkowska, A.Lozza, J.Ban, N.Bukau, B.Deuerling, E.

(2008) EMBO J 27: 1622

  • DOI: 10.1038/emboj.2008.89
  • Primary Citation of Related Structures:  
    2VRH

  • PubMed Abstract: 
  • Ribosome-associated chaperone Trigger Factor (TF) initiates folding of newly synthesized proteins in bacteria. Here, we pinpoint by site-specific crosslinking the sequence of molecular interactions of Escherichia coli TF and nascent chains during translation ...

    Ribosome-associated chaperone Trigger Factor (TF) initiates folding of newly synthesized proteins in bacteria. Here, we pinpoint by site-specific crosslinking the sequence of molecular interactions of Escherichia coli TF and nascent chains during translation. Furthermore, we provide the first full-length structure of TF associated with ribosome-nascent chain complexes by using cryo-electron microscopy. In its active state, TF arches over the ribosomal exit tunnel accepting nascent chains in a protective void. The growing nascent chain initially follows a predefined path through the entire interior of TF in an unfolded conformation, and even after folding into a domain it remains accommodated inside the protective cavity of ribosome-bound TF. The adaptability to accept nascent chains of different length and folding states may explain how TF is able to assist co-translational folding of all kinds of nascent polypeptides during ongoing synthesis. Moreover, we suggest a model of how TF's chaperoning function can be coordinated with the co-translational processing and membrane targeting of nascent polypeptides by other ribosome-associated factors.


    Organizational Affiliation

    Zentrum für Molekulare Biologie Heidelberg, DKFZ-ZMBH Alliance, Universität Heidelberg, Heidelberg, Germany.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TRIGGER FACTOR A432Escherichia coliMutation(s): 0 
EC: 5.2.1.8
Find proteins for P0A850 (Escherichia coli (strain K12))
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Go to UniProtKB:  P0A850
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
50S RIBOSOMAL PROTEIN L23 B100Escherichia coliMutation(s): 0 
Find proteins for P0ADZ0 (Escherichia coli (strain K12))
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Go to UniProtKB:  P0ADZ0
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
50S RIBOSOMAL PROTEIN L24 C103Escherichia coliMutation(s): 0 
Find proteins for P60624 (Escherichia coli (strain K12))
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Go to UniProtKB:  P60624
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
50S RIBOSOMAL PROTEIN L29 D63Escherichia coliMutation(s): 0 
Find proteins for P0A7M6 (Escherichia coli (strain K12))
Explore P0A7M6 
Go to UniProtKB:  P0A7M6
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 19.0 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-06-17
    Type: Initial release
  • Version 1.1: 2011-12-14
    Changes: Derived calculations, Other, Version format compliance
  • Version 1.2: 2013-08-07
    Changes: Other, Refinement description
  • Version 1.3: 2017-08-23
    Changes: Data collection, Refinement description