6SUQ

Crystal Structure of TcdB2-TccC3-TEV


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.70 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.269 

wwPDB Validation   3D Report Full Report


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Literature

Towards the application of Tc toxins as a universal protein translocation system.

Roderer, D.Schubert, E.Sitsel, O.Raunser, S.

(2019) Nat Commun 10: 5263-5263

  • DOI: 10.1038/s41467-019-13253-8
  • Primary Citation of Related Structures:  
    6SUQ, 6SUP

  • PubMed Abstract: 
  • Tc toxins are bacterial protein complexes that inject cytotoxic enzymes into target cells using a syringe-like mechanism. Tc toxins are composed of a membrane translocator and a cocoon that encapsulates a toxic enzyme. The toxic enzyme varies between Tc toxins from different species and is not conserved ...

    Tc toxins are bacterial protein complexes that inject cytotoxic enzymes into target cells using a syringe-like mechanism. Tc toxins are composed of a membrane translocator and a cocoon that encapsulates a toxic enzyme. The toxic enzyme varies between Tc toxins from different species and is not conserved. Here, we investigate whether the toxic enzyme can be replaced by other small proteins of different origin and properties, namely Cdc42, herpes simplex virus ICP47, Arabidopsis thaliana iLOV, Escherichia coli DHFR, Ras-binding domain of CRAF kinase, and TEV protease. Using a combination of electron microscopy, X-ray crystallography and in vitro translocation assays, we demonstrate that it is possible to turn Tc toxins into customizable molecular syringes for delivering proteins of interest across membranes. We also infer the guidelines that protein cargos must obey in terms of size, charge, and fold in order to apply Tc toxins as a universal protein translocation system.


    Organizational Affiliation

    Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Otto-Hahn-Str. 11, 44227, Dortmund, Germany. stefan.raunser@mpi-dortmund.mpg.de.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TcdB2,TccC3,Genome polyprotein A2410Photorhabdus luminescensTobacco etch virusMutation(s): 0 
Gene Names: tcdB2TccC3
EC: 3.4 (PDB Primary Data), 3.4.22.45 (PDB Primary Data), 3.6.4 (PDB Primary Data), 3.4.22.44 (PDB Primary Data), 2.7.7.48 (PDB Primary Data)
Find proteins for P04517 (Tobacco etch virus)
Explore P04517 
Go to UniProtKB:  P04517
Find proteins for Q8GF99 (Photorhabdus luminescens)
Explore Q8GF99 
Go to UniProtKB:  Q8GF99
Find proteins for Q8GF97 (Photorhabdus luminescens)
Explore Q8GF97 
Go to UniProtKB:  Q8GF97
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.70 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.269 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 234.43α = 90
b = 234.43β = 90
c = 143.19γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research CouncilGermany615984

Revision History  (Full details and data files)

  • Version 1.0: 2019-12-04
    Type: Initial release