3R84

Structure of the Mediator head subcomplex Med11/22


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Mediator head subcomplex Med11/22 contains a common helix bundle building block with a specific function in transcription initiation complex stabilization.

Seizl, M.Lariviere, L.Pfaffeneder, T.Wenzeck, L.Cramer, P.

(2011) Nucleic Acids Res. 39: 6291-6304

  • DOI: 10.1093/nar/gkr229

  • PubMed Abstract: 
  • Mediator is a multiprotein co-activator of RNA polymerase (Pol) II transcription. Mediator contains a conserved core that comprises the 'head' and 'middle' modules. We present here a structure-function analysis of the essential Med11/22 heterodimer, ...

    Mediator is a multiprotein co-activator of RNA polymerase (Pol) II transcription. Mediator contains a conserved core that comprises the 'head' and 'middle' modules. We present here a structure-function analysis of the essential Med11/22 heterodimer, a part of the head module. Med11/22 forms a conserved four-helix bundle domain with C-terminal extensions, which bind the central head subunit Med17. A highly conserved patch on the bundle surface is required for stable transcription pre-initiation complex formation on a Pol II promoter in vitro and in vivo and may recruit the general transcription factor TFIIH. The bundle domain fold is also present in the Mediator middle module subcomplex Med7/21 and is predicted in the Mediator heterodimers Med2/3, Med4/9, Med10/14 and Med28/30. The bundle domain thus represents a common building block that has been multiplied and functionally diversified during Mediator evolution in eukaryotes.


    Organizational Affiliation

    Gene Center and Department of Biochemistry, Center for Integrated Protein Science Munich, Ludwig-Maximilians-Universit√§t M√ľnchen, Feodor-Lynen-Strasse 25, 81377 Munich, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mediator of RNA polymerase II transcription subunit 11
A, C, E, G, I, K, M, O, Q, S, U, W
86Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: MED11
Find proteins for Q99278 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: MED11
Go to UniProtKB:  Q99278
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Mediator of RNA polymerase II transcription subunit 22
B, D, F, H, J, L, N, P, R, T, V, X
92Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 1 
Gene Names: SRB6 (MED22)
Find proteins for P32570 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P32570
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.170 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 148.490α = 90.00
b = 173.790β = 90.00
c = 101.610γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
SOLVEphasing
XDSdata reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-04-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2011-08-24
    Type: Database references
  • Version 1.3: 2017-11-08
    Type: Refinement description