1E91

Structure of the complex of the Mad1-Sin3B interaction domains


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: 30 STRUCTURES WITH NO RESTRAINT VIOLATIONS, 20 LOWEST ENERGY STRUCTURES FINALLY SELECTED 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The MAD1-Sin3B Interaction Involves a Novel Helical Fold

Spronk, C.A.E.M.Tessari, M.Kaan, A.M.Jansen, J.F.A.Vermeulen, M.Stunnenberg, H.G.Vuister, G.W.

(2000) Nat.Struct.Mol.Biol. 7: 1100-1104

  • DOI: 10.1038/81944

  • PubMed Abstract: 
  • Sin3A or Sin3B are components of a corepressor complex that mediates repression by transcription factors such as the helix-loop-helix proteins Mad and Mxi. Members of the Mad/Mxi family of repressors play important roles in the transition between pro ...

    Sin3A or Sin3B are components of a corepressor complex that mediates repression by transcription factors such as the helix-loop-helix proteins Mad and Mxi. Members of the Mad/Mxi family of repressors play important roles in the transition between proliferation and differentiation by down-regulating the expression of genes that are activated by the proto-oncogene product Myc. Here, we report the solution structure of the second paired amphipathic helix (PAH) domain (PAH2) of Sin3B in complex with a peptide comprising the N-terminal region of Mad1. This complex exhibits a novel interaction fold for which we propose the name 'wedged helical bundle'. Four alpha-helices of PAH2 form a hydrophobic cleft that accommodates an amphipathic Mad1 alpha-helix. Our data further show that, upon binding Mad1, secondary structure elements of PAH2 are stabilized. The PAH2-Mad1 structure provides the basis for determining the principles of protein interaction and selectivity involving PAH domains.


    Organizational Affiliation

    Department of Biophysical Chemistry, NSR Center, University of Nijmegen, The Netherlands.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PAIRED AMPHIPATHIC HELIX PROTEIN SIN3B
A
85Mus musculusMutation(s): 0 
Gene Names: Sin3b (Kiaa0700)
Find proteins for Q62141 (Mus musculus)
Go to UniProtKB:  Q62141
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
MAD PROTEIN (MAX DIMERIZER)
B
13Homo sapiensMutation(s): 0 
Gene Names: MXD1 (MAD)
Find proteins for Q05195 (Homo sapiens)
Go to Gene View: MXD1
Go to UniProtKB:  Q05195
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: 30 STRUCTURES WITH NO RESTRAINT VIOLATIONS, 20 LOWEST ENERGY STRUCTURES FINALLY SELECTED 
  • Olderado: 1E91 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-11-20
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-01-17
    Type: Database references, Source and taxonomy