1SW6

S. CEREVISIAE SWI6 ANKYRIN-REPEAT FRAGMENT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.222 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

X-ray structural analysis of the yeast cell cycle regulator Swi6 reveals variations of the ankyrin fold and has implications for Swi6 function.

Foord, R.Taylor, I.A.Sedgwick, S.G.Smerdon, S.J.

(1999) Nat Struct Biol 6: 157-165

  • DOI: 10.1038/5845
  • Primary Citation of Related Structures:  
    1SW6

  • PubMed Abstract: 
  • Swi6 is a 92,000 Mr protein common to two distinct transcriptional activation complexes (SBF and MBF) that coordinate gene expression at the G1-S boundary of the yeast cell cycle. The X-ray structure of a central 36,000 Mr fragment has been determined and refined at 2 ...

    Swi6 is a 92,000 Mr protein common to two distinct transcriptional activation complexes (SBF and MBF) that coordinate gene expression at the G1-S boundary of the yeast cell cycle. The X-ray structure of a central 36,000 Mr fragment has been determined and refined at 2.1 A resolution. The structure reveals a basic framework of five ankyrin repeat modules that is elaborated through a series of helical insertions distinguishing it from structures of other ankyrin repeat proteins. A second domain contains an approximately 30-residue region of extended structure that interacts with the ankyrin repeat core over a substantial proportion of its surface. Conservation of residues buried by these interactions indicates that all members of the Swi6/Cdc10 family share a similar architecture. Several temperature-sensitive mutations within Swi6 and Cdc10 appear to disrupt these interdomain contacts rather than destabilize the ankyrin repeat core. The unusual domain arrangement may be crucial for the modulation of interactions with other co-regulatory molecules such as cyclin-CDK complexes, and has implications for the quaternary interactions within the multisubunit SBF and MBF transcription complexes.


    Organizational Affiliation

    Division of Protein Structure, National Institute for Medical Research, London, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
REGULATORY PROTEIN SWI6A, B327Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: SWI6
UniProt
Find proteins for P09959 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P09959 
Go to UniProtKB:  P09959
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.222 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.85α = 90
b = 91.73β = 90
c = 90.4γ = 90
Software Package:
Software NamePurpose
SOLVEphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-09-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance