3VP9

Crystal structure of the N-terminal domain of the yeast general corepressor Tup1p mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.799 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of the N-terminal domain of the yeast general corepressor Tup1p and its functional implications

Matsumura, H.Kusaka, N.Nakamura, T.Tanaka, N.Sagegami, K.Uegaki, K.Inoue, T.Mukai, Y.

(2012) J.Biol.Chem. 287: 26528-26538

  • DOI: 10.1074/jbc.M112.369652
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The yeast Cyc8p-Tup1p protein complex is a general transcriptional corepressor of genes involved in many different physiological processes. Herein, we present the crystal structure of the Tup1p N-terminal domain (residues 1-92), essential for Tup1p s ...

    The yeast Cyc8p-Tup1p protein complex is a general transcriptional corepressor of genes involved in many different physiological processes. Herein, we present the crystal structure of the Tup1p N-terminal domain (residues 1-92), essential for Tup1p self-assembly and interaction with Cyc8p. This domain tetramerizes to form a novel antiparallel four-helix bundle. Coiled coil interactions near the helical ends hold each dimer together, whereas interdimeric association involves only two sets of two residues located toward the chain centers. A mutagenesis study confirmed that the nonpolar residues responsible for the association of the protomers as dimers are also required for transcriptional repression. An additional structural study demonstrated that the domain containing an Leu(62) → Arg mutation that had been shown not to bind Cyc8p exhibits an altered structure, distinct from the wild type. This altered structure explains why the mutant cannot bind Cyc8p. The data presented herein highlight the importance of the architecture of the Tup1p N-terminal domain for self-association.


    Organizational Affiliation

    Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan. matsumura@chem.eng.osaka-u.ac.jp




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
General transcriptional corepressor TUP1
A, B
92Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 1 
Gene Names: TUP1 (AAR1, AER2, AMM1, CYC9, FLK1, SFL2, UMR7)
Find proteins for P16649 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P16649
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DIO
Query on DIO

Download SDF File 
Download CCD File 
A, B
1,4-DIETHYLENE DIOXIDE
C4 H8 O2
RYHBNJHYFVUHQT-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.799 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.220 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 56.102α = 90.00
b = 41.461β = 95.35
c = 103.889γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
HKL-2000data scaling
SHELXSphasing
PHENIXrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-06-13
    Type: Initial release
  • Version 1.1: 2013-07-17
    Type: Database references