4Z9V

TCTP contains a BH3-like domain, which instead of inhibiting, activates Bcl-xL

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.187 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history. 


Literature

TCTP contains a BH3-like domain, which instead of inhibiting, activates Bcl-xL.

Thebault, S., Agez, M., Chi, X., Stojko, J., Cura, V., Telerman, S.B., Maillet, L., Gautier, F., Billas-Massobrio, I., Birck, C., Troffer-Charlier, N., Karafin, T., Honore, J., Senff-Ribeiro, A., Montessuit, S., Johnson, C.M., Juin, P., Cianferani, S., Martinou, J.C., Andrews, D.W., Amson, R., Telerman, A., Cavarelli, J.

(2016) Sci Rep 6: 19725-19725

  • DOI: https://doi.org/10.1038/srep19725
  • Primary Citation of Related Structures:  
    4Z9V

  • PubMed Abstract: 

    • Translationally Controlled Tumor Protein (TCTP) is anti-apoptotic, key in development and cancer, however without the typical Bcl2 family members' structure. Here we report that TCTP contains a BH3-like domain and forms heterocomplexes with Bcl-xL. The crystal structure of a Bcl-xL deletion variant-TCTP11-31 complex reveals that TCTP refolds in a helical conformation upon binding the BH3-groove of Bcl-xL, although lacking the h1-subregion interaction ...

    Translationally Controlled Tumor Protein (TCTP) is anti-apoptotic, key in development and cancer, however without the typical Bcl2 family members' structure. Here we report that TCTP contains a BH3-like domain and forms heterocomplexes with Bcl-xL. The crystal structure of a Bcl-xL deletion variant-TCTP11-31 complex reveals that TCTP refolds in a helical conformation upon binding the BH3-groove of Bcl-xL, although lacking the h1-subregion interaction. Experiments using in vitro-vivo reconstituted systems and TCTP(+/-) mice indicate that TCTP activates the anti-apoptotic function of Bcl-xL, in contrast to all other BH3-proteins. Replacing the non-conserved h1 of TCTP by that of Bax drastically increases the affinity of this hybrid for Bcl-xL, modifying its biological properties. This work reveals a novel class of BH3-proteins potentiating the anti-apoptotic function of Bcl-xL.

    Organizational Affiliation: 

    Département de Biologie Structurale Intégrative, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS UMR 7104, INSERM U964, 1 rue Laurent Fries, BP 10142, F-67404 Illkirch, France.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Bcl-2-like protein 1,APOPTOSIS REGULATOR BCL-XL
A, B
153Homo sapiensMutation(s): 0 
Gene Names: BCL2L1, BCL2L, BCLX
UniProt & NIH Common Fund Data Resources
Find proteins for Q07817 (Homo sapiens)
Explore Q07817 
Go to UniProtKB:  Q07817
PHAROS:  Q07817
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ07817
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Translationally-controlled tumor protein
C, D, E, F, G
C, D, E, F, G, H
21Homo sapiensMutation(s): 0 
Gene Names: TPT1
UniProt & NIH Common Fund Data Resources
Find proteins for P13693 (Homo sapiens)
Explore P13693 
Go to UniProtKB:  P13693
PHAROS:  P13693
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP13693
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BCT
Query on BCT
Download Ideal Coordinates CCD File 
I [auth A],
J [auth B]		BICARBONATE ION
C H O3
BVKZGUZCCUSVTD-UHFFFAOYSA-M		 Ligand Interaction
NA
Query on NA
Download Ideal Coordinates CCD File 
K [auth F],
L [auth H]		SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.187 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.357α = 90
b = 100.357β = 90
c = 105.045γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
HKL-2000data reduction
Aimlessdata scaling
Cootmodel building
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-02-10
    Type: Initial release