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 

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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 Biol 7: 1100-1104

  • DOI: 10.1038/81944
  • Primary Citation of Related Structures:  
    1E91

  • 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 prolife ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PAIRED AMPHIPATHIC HELIX PROTEIN SIN3B A85Mus musculusMutation(s): 0 
Gene Names: Sin3bKiaa0700
Find proteins for Q62141 (Mus musculus)
Explore Q62141 
Go to UniProtKB:  Q62141
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
MAD PROTEIN (MAX DIMERIZER) B13Homo sapiensMutation(s): 0 
Gene Names: MXD1MAD
Find proteins for Q05195 (Homo sapiens)
Explore Q05195 
Go to UniProtKB:  Q05195
NIH Common Fund Data Resources
PHAROS:  Q05195
Protein Feature View
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  • Reference Sequence
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

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Entry History 

Deposition Data

Revision History 

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