1OMS

Structure determination by MAD: E.coli Trigger Factor binding at the ribosomal exit tunnel.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Chaperone binding at the ribosomal exit tunnel.

Kristensen, O.Gajhede, M.

(2003) Structure 11: 1547-1556

  • DOI: 10.1016/j.str.2003.11.003
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The exit tunnel region of the ribosome is well established as a focal point for interaction between the components that guide the fate of nascent polypeptides. One of these, the chaperone trigger factor (TF), associates with the 50S ribosomal subunit ...

    The exit tunnel region of the ribosome is well established as a focal point for interaction between the components that guide the fate of nascent polypeptides. One of these, the chaperone trigger factor (TF), associates with the 50S ribosomal subunit through its N-terminal domain. Targeting of TF to ribosomes is crucial to achieve its remarkable efficiency in protein folding. A similar tight coupling to translation is found in signal recognition particle (SRP)-dependent protein translocation. Here, we report crystal structures of the E. coli TF ribosome binding domain. TF is structurally related to the Hsp33 chaperone but has a prominent ribosome anchor located as a tip of the molecule. This tip includes the previously established unique TF signature motif. Comparison reveals that this feature is not found in SRP structures. We identify a conserved helical kink as a hallmark of the TF structure that is most likely critical to ensure ribosome association.


    Related Citations: 
    • L23 protein functions as a chaperone docking site on the ribosome.
      Kramer, G., Rauch, T., Rist, W., Vorderwulbecke, S., Patzelt, H., Schulze-Specking, A., Ban, N., Deuerling, E., Bukau, B.
      (2002) Nature 419: 171
    • Localization of the Trigger Factor Binding Site on the Ribosomal 50S Subunit.
      Blaha, G., Wilson, D.N., Stoller, G., Fischer, G., Willumeit, R., Nierhaus, K.H.
      (2003) J Mol Biol 326: 887
    • Interaction of trigger factor with the ribosome.
      Maier, R., Eckert, B., Scholz, C., Lilie, H., Schmid, F.X.
      (2003) J Mol Biol 326: 585

    Organizational Affiliation

    Structural Biology, Department of Medicinal Chemistry, The Danish University of Pharmaceutical Sciences, Universitetsparken 2, DK-2100 Copenhagen, Denmark. ok@dfh.dk



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Trigger Factor
A, B, C
121Escherichia coliMutation(s): 0 
Gene Names: tig
EC: 5.2.1.8
Find proteins for P0A850 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A850
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PG4
Query on PG4

Download CCD File 
B, C
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A, B, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
C
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
SO2
Query on SO2

Download CCD File 
B
SULFUR DIOXIDE
O2 S
RAHZWNYVWXNFOC-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,B,C
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.208 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.644α = 90
b = 71.644β = 90
c = 375.409γ = 120
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
CCP4data scaling
SHARPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-12-16
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance