1IG7

Msx-1 Homeodomain/DNA Complex Structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the Msx-1 homeodomain/DNA complex

Hovde, S.Abate-Shen, C.Geiger, J.H.

(2001) Biochemistry 40: 12013-12021


  • PubMed Abstract: 
  • The Msx-1 homeodomain protein plays a crucial role in craniofacial, limb, and nervous system development. Homeodomain DNA-binding domains are comprised of 60 amino acids that show a high degree of evolutionary conservation. We have determined the str ...

    The Msx-1 homeodomain protein plays a crucial role in craniofacial, limb, and nervous system development. Homeodomain DNA-binding domains are comprised of 60 amino acids that show a high degree of evolutionary conservation. We have determined the structure of the Msx-1 homeodomain complexed to DNA at 2.2 A resolution. The structure has an unusually well-ordered N-terminal arm with a unique trajectory across the minor groove of the DNA. DNA specificity conferred by bases flanking the core TAAT sequence is explained by well ordered water-mediated interactions at Q50. Most interactions seen at the TAAT sequence are typical of the interactions seen in other homeodomain structures. Comparison of the Msx-1-HD structure to all other high resolution HD-DNA complex structures indicate a remarkably well-conserved sphere of hydration between the DNA and protein in these complexes.


    Organizational Affiliation

    Michigan State University Chemistry Department, East Lansing Michigan 48824, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Homeotic protein Msx-1
A
58Mus musculusGene Names: Msx1 (Hox7, Hox7.1)
Find proteins for P13297 (Mus musculus)
Go to UniProtKB:  P13297
Entity ID: 1
MoleculeChainsLengthOrganism
5'-D(*CP*AP*CP*TP*AP*AP*TP*TP*GP*AP*AP*GP*G)-3'B13N/A
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(P*TP*CP*CP*TP*TP*CP*AP*AP*TP*TP*AP*GP*TP*GP*AP*C)-3'C16N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.205 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 33.600α = 90.00
b = 60.960β = 90.00
c = 82.300γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSrefinement
AMoREphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-04-23
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance