1MB1

MBP1 FROM SACCHAROMYCES CEREVISIAE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The X-ray structure of the DNA-binding domain from the Saccharomyces cerevisiae cell-cycle transcription factor Mbp1 at 2.1 A resolution.

Taylor, I.A.Treiber, M.K.Olivi, L.Smerdon, S.J.

(1997) J.Mol.Biol. 272: 1-8

  • DOI: 10.1006/jmbi.1997.1229

  • PubMed Abstract: 
  • The structure of the DNA-binding domain of the Saccharomyces cerevisiae cell-cycle transcription factor Mbp1 has been solved using the multiwavelength anomalous diffraction (MAD) technique on crystals of selenomethionyl protein and refined at 2.1 A r ...

    The structure of the DNA-binding domain of the Saccharomyces cerevisiae cell-cycle transcription factor Mbp1 has been solved using the multiwavelength anomalous diffraction (MAD) technique on crystals of selenomethionyl protein and refined at 2.1 A resolution. The molecule is globular, consisting of a twisted, six-stranded beta-barrel that is packed against a loose bundle of four alpha-helices. Two of the beta-strands in combination with two of the helices form a structure characteristic of the DNA-binding motif found in the CAP family of helix-turn-helix transcription factors. In Mbp1, this beta2/alpha2 motif is associated with regions of both positive electrostatic potential and sequence conservation within the Mbp1/Swi4 family, suggesting a role in DNA-binding in these proteins. A combination of structural and biochemical data further indicate a similarity to HNF3gamma/fork head, a member of the family of "winged" helix-turn-helix proteins. We propose a model for DNA-binding involving a recognition helix in the major groove, phosphodiester backbone interactions through the beta-hairpin and further base and/or phosphate interactions mediated by a C-terminal, positively charged loop.


    Organizational Affiliation

    Division of Protein Structure, National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA, U.K.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MLU1-BOX BINDING PROTEIN
A
130Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Gene Names: MBP1
Find proteins for P39678 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P39678
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.215 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 42.580α = 90.00
b = 42.580β = 90.00
c = 123.680γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
SCALEPACKdata scaling
DENZOdata reduction
CCP4refinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-07-29
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance