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: 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
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Bcl-2-like protein 1,APOPTOSIS REGULATOR BCL-XLA, B153Homo sapiensMutation(s): 0 
Gene Names: BCL2L1BCL2LBCLX
Find proteins for Q07817 (Homo sapiens)
Explore Q07817 
Go to UniProtKB:  Q07817
NIH Common Fund Data Resources
PHAROS:  Q07817
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Translationally-controlled tumor proteinC, D, E, F, G, H21Homo sapiensMutation(s): 0 
Gene Names: TPT1
Find proteins for P13693 (Homo sapiens)
Explore P13693 
Go to UniProtKB:  P13693
NIH Common Fund Data Resources
PHAROS:  P13693
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