4ROC

Human TFIIB-related factor 2 (Brf2) and TBP bound to U6#2 promoter


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 

wwPDB Validation 3D Report Full Report



Literature

Redox Signaling by the RNA Polymerase III TFIIB-Related Factor Brf2.

Gouge, J.Satia, K.Guthertz, N.Widya, M.Thompson, A.J.Cousin, P.Dergai, O.Hernandez, N.Vannini, A.

(2015) Cell 163: 1375-1387

  • DOI: 10.1016/j.cell.2015.11.005
  • Primary Citation of Related Structures:  
    4ROC, 4ROD, 4ROE

  • PubMed Abstract: 
  • TFIIB-related factor 2 (Brf2) is a member of the family of TFIIB-like core transcription factors. Brf2 recruits RNA polymerase (Pol) III to type III gene-external promoters, including the U6 spliceosomal RNA and selenocysteine tRNA genes. Found only ...

    TFIIB-related factor 2 (Brf2) is a member of the family of TFIIB-like core transcription factors. Brf2 recruits RNA polymerase (Pol) III to type III gene-external promoters, including the U6 spliceosomal RNA and selenocysteine tRNA genes. Found only in vertebrates, Brf2 has been linked to tumorigenesis but the underlying mechanisms remain elusive. We have solved crystal structures of a human Brf2-TBP complex bound to natural promoters, obtaining a detailed view of the molecular interactions occurring at Brf2-dependent Pol III promoters and highlighting the general structural and functional conservation of human Pol II and Pol III pre-initiation complexes. Surprisingly, our structural and functional studies unravel a Brf2 redox-sensing module capable of specifically regulating Pol III transcriptional output in living cells. Furthermore, we establish Brf2 as a central redox-sensing transcription factor involved in the oxidative stress pathway and provide a mechanistic model for Brf2 genetic activation in lung and breast cancer.


    Organizational Affiliation

    Division of Structural Biology, The Institute of Cancer Research, London SW7 3RP, UK. Electronic address: alessandro.vannini@icr.ac.uk.



Macromolecules

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
TATA-box-binding proteinB183Homo sapiensMutation(s): 0 
Gene Names: TBPGTF2D1TF2DTFIID
Find proteins for P20226 (Homo sapiens)
Explore P20226 
Go to UniProtKB:  P20226
NIH Common Fund Data Resources
PHAROS  P20226
Protein Feature View
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  • Reference Sequence
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription factor IIIB 50 kDa subunitA360Homo sapiensMutation(s): 0 
Gene Names: BRF2BRFUPRO1470
Find proteins for Q9HAW0 (Homo sapiens)
Explore Q9HAW0 
Go to UniProtKB:  Q9HAW0
NIH Common Fund Data Resources
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 4
MoleculeChainsLengthOrganismImage
Non-template strandT28synthetic construct
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Entity ID: 3
MoleculeChainsLengthOrganismImage
Template strandN28synthetic construct
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download CCD File 
N
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.276α = 90
b = 89.911β = 90
c = 102.462γ = 90
Software Package:
Software NamePurpose
GDAdata collection
PHASERphasing
BUSTERrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-12-30
    Type: Initial release