2VRH

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


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 19 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

  • 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 tra ...

    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

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRIGGER FACTOR
A
432Escherichia coli (strain K12)Gene Names: tig
EC: 5.2.1.8
Find proteins for P0A850 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A850
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
50S RIBOSOMAL PROTEIN L23
B
100Escherichia coli (strain K12)Gene Names: rplW
Find proteins for P0ADZ0 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ADZ0
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
50S RIBOSOMAL PROTEIN L24
C
103Escherichia coli (strain K12)Gene Names: rplX
Find proteins for P60624 (Escherichia coli (strain K12))
Go to UniProtKB:  P60624
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
50S RIBOSOMAL PROTEIN L29
D
63Escherichia coli (strain K12)Gene Names: rpmC
Find proteins for P0A7M6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7M6
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 19 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: 2008-06-17
    Type: Initial release
  • Version 1.1: 2011-12-14
    Type: Derived calculations, Other, Version format compliance
  • Version 1.2: 2013-08-07
    Type: Other, Refinement description
  • Version 1.3: 2017-08-23
    Type: Data collection, Refinement description