5ZMC

Structural Basis for Reactivation of -146C>T Mutant TERT Promoter by cooperative binding of p52 and ETS1/2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.99 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.259 
  • R-Value Observed: 0.260 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for reactivating the mutant TERT promoter by cooperative binding of p52 and ETS1.

Xu, X.Li, Y.Bharath, S.R.Ozturk, M.B.Bowler, M.W.Loo, B.Z.L.Tergaonkar, V.Song, H.

(2018) Nat Commun 9: 3183-3183

  • DOI: 10.1038/s41467-018-05644-0
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Transcriptional factors ETS1/2 and p52 synergize downstream of non-canonical NF-κB signaling to drive reactivation of the -146C>T mutant TERT promoter in multiple cancer types, but the mechanism underlying this cooperativity remains unknown. Here we ...

    Transcriptional factors ETS1/2 and p52 synergize downstream of non-canonical NF-κB signaling to drive reactivation of the -146C>T mutant TERT promoter in multiple cancer types, but the mechanism underlying this cooperativity remains unknown. Here we report the crystal structure of a ternary p52/ETS1/-146C>T TERT promoter complex. While p52 needs to associate with consensus κB sites on the DNA to function during non-canonical NF-κB signaling, we show that p52 can activate the -146C>T TERT promoter without binding DNA. Instead, p52 interacts with ETS1 to form a heterotetramer, counteracting autoinhibition of ETS1. Analogous to observations with the GABPA/GABPB heterotetramer, the native flanking ETS motifs are required for sustained activation of the -146C>T TERT promoter by the p52/ETS1 heterotetramer. These observations provide a unifying mechanism for transcriptional activation by GABP and ETS1, and suggest that genome-wide targets of non-canonical NF-κB signaling are not limited to those driven by consensus κB sequences.


    Organizational Affiliation

    Department of Biochemistry, National University of Singapore, 14 Science Drive, Singapore, 117543, Singapore. haiwei@imcb.a-star.edu.sg.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Protein C-ets-1B111Homo sapiensMutation(s): 0 
Gene Names: ETS1EWSR2
Find proteins for P14921 (Homo sapiens)
Explore P14921 
Go to UniProtKB:  P14921
NIH Common Fund Data Resources
PHAROS  P14921
Protein Feature View
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  • Reference Sequence

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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Nuclear factor NF-kappa-B p100 subunitA295Homo sapiensMutation(s): 0 
Gene Names: NFKB2LYT10
Find proteins for Q00653 (Homo sapiens)
Explore Q00653 
Go to UniProtKB:  Q00653
NIH Common Fund Data Resources
PHAROS  Q00653
Protein Feature View
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  • Reference Sequence
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Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(P*CP*GP*GP*GP*GP*AP*CP*CP*CP*GP*GP*AP*AP*GP*GP*G)-3')C16Homo sapiens
  • Find similar nucleic acids by: Sequence   |   Structure
Entity ID: 2
MoleculeChainsLengthOrganism
DNA (5'-D(P*GP*CP*CP*CP*TP*TP*CP*CP*GP*GP*GP*TP*CP*CP*CP*C)-3')D16Homo sapiens
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.99 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.259 
  • R-Value Observed: 0.260 
  • Space Group: P 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.414α = 90
b = 71.414β = 90
c = 262.52γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-09-19
    Type: Initial release
  • Version 1.1: 2018-10-17
    Changes: Data collection, Database references