2JTX

NMR structure of the TFIIE-alpha carboxyl terminus


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

p53 and TFIIEalpha share a common binding site on the Tfb1/p62 subunit of TFIIH.

Di Lello, P.Miller Jenkins, L.M.Mas, C.Langlois, C.Malitskaya, E.Fradet-Turcotte, A.Archambault, J.Legault, P.Omichinski, J.G.

(2008) Proc.Natl.Acad.Sci.Usa 105: 106-111

  • DOI: 10.1073/pnas.0707892105

  • PubMed Abstract: 
  • The general transcription factor IIH is recruited to the transcription preinitiation complex through an interaction between its p62/Tfb1 subunit and the alpha-subunit of the general transcription factor IIE (TFIIEalpha). We have determined that the a ...

    The general transcription factor IIH is recruited to the transcription preinitiation complex through an interaction between its p62/Tfb1 subunit and the alpha-subunit of the general transcription factor IIE (TFIIEalpha). We have determined that the acidic carboxyl terminus of TFIIEalpha (TFIIEalpha(336-439)) directly binds the amino-terminal PH domain of p62/Tfb1 with nanomolar affinity. NMR mapping and mutagenesis studies demonstrate that the TFIIEalpha binding site on p62/Tfb1 is identical to the binding site for the second transactivation domain of p53 (p53 TAD2). In addition, we demonstrate that TFIIEalpha(336-439) is capable of competing with p53 for a common binding site on p62/Tfb1 and that TFIIEalpha(336-439) and the diphosphorylated form (pS46/pT55) of p53 TAD2 have similar binding constants. NMR structural studies reveal that TFIIEalpha(336-439) contains a small domain (residues 395-433) folded in a novel betabetaalphaalphaalpha topology. NMR mapping studies demonstrate that two unstructured regions (residues 377-393 and residues 433-439) located on either side of the folded domain appear to be required for TFIIEalpha(336-439) binding to p62/Tfb1 and that these two unstructured regions are held close to each other in three-dimensional space by the novel structured domain. We also demonstrate that, like p53, TFIIEalpha(336-439) can activate transcription in vivo. These results point to an important interplay between the general transcription factor TFIIEalpha and the tumor suppressor protein p53 in regulating transcriptional activation that may be modulated by the phosphorylation status of p53.


    Organizational Affiliation

    Département de Biochimie, Université de Montréal, C.P. 6128 Succursale Centre-Ville, Montréal, QC, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcription initiation factor IIE subunit alpha
A
106Homo sapiensMutation(s): 0 
Gene Names: GTF2E1 (TF2E1)
Find proteins for P29083 (Homo sapiens)
Go to Gene View: GTF2E1
Go to UniProtKB:  P29083
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2JTX Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-12-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance