1R5U

RNA POLYMERASE II TFIIB COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.50 Å
  • R-Value Free: 0.373 
  • R-Value Work: 0.345 
  • R-Value Observed: 0.345 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis of transcription: an RNA polymerase II-TFIIB cocrystal at 4.5 Angstroms.

Bushnell, D.A.Westover, K.D.Davis, R.E.Kornberg, R.D.

(2004) Science 303: 983-988

  • DOI: 10.1126/science.1090838
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The structure of the general transcription factor IIB (TFIIB) in a complex with RNA polymerase II reveals three features crucial for transcription initiation: an N-terminal zinc ribbon domain of TFIIB that contacts the "dock" domain of the polymerase ...

    The structure of the general transcription factor IIB (TFIIB) in a complex with RNA polymerase II reveals three features crucial for transcription initiation: an N-terminal zinc ribbon domain of TFIIB that contacts the "dock" domain of the polymerase, near the path of RNA exit from a transcribing enzyme; a "finger" domain of TFIIB that is inserted into the polymerase active center; and a C-terminal domain, whose interaction with both the polymerase and with a TATA box-binding protein (TBP)-promoter DNA complex orients the DNA for unwinding and transcription. TFIIB stabilizes an early initiation complex, containing an incomplete RNA-DNA hybrid region. It may interact with the template strand, which sets the location of the transcription start site, and may interfere with RNA exit, which leads to abortive initiation or promoter escape. The trajectory of promoter DNA determined by the C-terminal domain of TFIIB traverses sites of interaction with TFIIE, TFIIF, and TFIIH, serving to define their roles in the transcription initiation process.


    Organizational Affiliation

    Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305-5126, USA.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase II largest subunitA1733Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
Find proteins for P04050 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase II 140 kDa polypeptideB1224Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase II 45 kDa polypeptideC318Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III 27 kDa polypeptideE215Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III 23 kDa polypeptideF155Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III 14.5 kDa polypeptideH146Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase II 14.2 kDa polypeptideI122Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III 8.3 kDa polypeptideJ70Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase II 13.6 kDa polypeptideK120Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III 7.7 kDa polypeptideL70Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
TRANSCRIPTION FACTOR II B (TFIIB)M86Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: Sua7
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
A, B, C, I, J, L, M
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.50 Å
  • R-Value Free: 0.373 
  • R-Value Work: 0.345 
  • R-Value Observed: 0.345 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 212.438α = 90
b = 217.182β = 90
c = 422.876γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
CNSrefinement
CCP4data scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-02-17
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance