1NVP

HUMAN TFIIA/TBP/DNA COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Novel interactions between the components of human and yeast TFIIA/TBP/DNA complexes.

Bleichenbacher, M.Tan, S.Richmond, T.J.

(2003) J.Mol.Biol. 332: 783-793

  • Primary Citation of Related Structures:  1NH2

  • PubMed Abstract: 
  • RNA polymerase II-dependent transcription requires the assembly of a multi-protein, preinitiation complex on core promoter elements. Transcription factor IID (TFIID) comprising the TATA box-binding protein (TBP) and TBP-associated factors (TAFs) is r ...

    RNA polymerase II-dependent transcription requires the assembly of a multi-protein, preinitiation complex on core promoter elements. Transcription factor IID (TFIID) comprising the TATA box-binding protein (TBP) and TBP-associated factors (TAFs) is responsible for promoter recognition in this complex. Subsequent association of TFIIA and TFIIB provides enhanced complex stability. TFIIA is required for transcriptional stimulation by certain viral and cellular activators, and favors formation of the preinitiation complex in the presence of repressor NC2. The X-ray structures of human and yeast TBP/TFIIA/DNA complexes at 2.1A and 1.9A resolution, respectively, are presented here and seen to resemble each other closely. The interactions made by human TFIIA with TBP and DNA within and upstream of the TATA box, including those involving water molecules, are described and compared to the yeast structure. Of particular interest is a previously unobserved region of TFIIA that extends the binding interface with TBP in the yeast, but not in the human complex, and that further elucidates biochemical and genetic results.


    Organizational Affiliation

    ETH Zürich, Institute for Molecular Biology and Biophysics, ETH-Hönggerberg, CH-8093 Zürich, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
TATA box binding protein
A
181Homo sapiensGene Names: TBP (GTF2D1, TF2D, TFIID)
Find proteins for P20226 (Homo sapiens)
Go to Gene View: TBP
Go to UniProtKB:  P20226
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Transcription initiation factor IIA alpha chain
B
57Homo sapiensGene Names: GTF2A1 (TF2A1)
Find proteins for P52655 (Homo sapiens)
Go to Gene View: GTF2A1
Go to UniProtKB:  P52655
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Transcription initiation factor IIA beta chain
C
76Homo sapiensGene Names: GTF2A1 (TF2A1)
Find proteins for P52655 (Homo sapiens)
Go to Gene View: GTF2A1
Go to UniProtKB:  P52655
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
Transcription initiation factor IIA gamma chain
D
108Homo sapiensGene Names: GTF2A2 (TF2A2)
Find proteins for P52657 (Homo sapiens)
Go to Gene View: GTF2A2
Go to UniProtKB:  P52657
Entity ID: 1
MoleculeChainsLengthOrganism
5'-D(*GP*GP*GP*GP*GP*GP*GP*CP*TP*AP*TP*AP*AP*AP*AP*GP*G)-3'E17N/A
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(*CP*CP*TP*TP*TP*TP*AP*TP*AP*GP*CP*CP*CP*CP*CP*CP*C)-3'F17N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.229 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 59.624α = 90.00
b = 90.884β = 90.00
c = 125.256γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
SCALEPACKdata scaling
DENZOdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-10-21
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance