1GT0

Crystal structure of a POU/HMG/DNA ternary complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.232 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal Structure of a POU/Hmg/DNA Ternary Complex Suggests Differential Assembly of Oct4 and Sox2 on Two Enhancers

Remenyi, A.Lins, K.Nissen, L.J.Reinbold, R.Scholer, H.R.Wilmanns, M.

(2003) Genes Dev. 17: 2048

  • DOI: 10.1101/gad.269303

  • PubMed Abstract: 
  • Members of the POU and SOX transcription factor families exemplify the partnerships established between various transcriptional regulators during early embryonic development. Although functional cooperativity between key regulator proteins is pivotal ...

    Members of the POU and SOX transcription factor families exemplify the partnerships established between various transcriptional regulators during early embryonic development. Although functional cooperativity between key regulator proteins is pivotal for milestone decisions in mammalian development, little is known about the underlying molecular mechanisms. In this study, we focus on two transcription factors, Oct4 and Sox2, as their combination on DNA is considered to direct the establishment of the first three lineages in the mammalian embryo. Using experimental high-resolution structure determination, followed by model building and experimental validation, we found that Oct4 and Sox2 were able to dimerize onto DNA in distinct conformational arrangements. We demonstrate that the DNA enhancer region of their target genes is responsible for the correct spatial alignment of glue-like interaction domains on their surface. Interestingly, these surfaces frequently have redundant functions and are instrumental in recruiting various interacting protein partners.


    Organizational Affiliation

    Gene Expression Program, EMBL, 69117 Heidelberg, Germany. remenyi@itsa.ucsf.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
OCTAMER-BINDING TRANSCRIPTION FACTOR 1
C
159Homo sapiensMutations: C149S, C61S
Gene Names: POU2F1 (OCT1, OTF1)
Find proteins for P14859 (Homo sapiens)
Go to Gene View: POU2F1
Go to UniProtKB:  P14859
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
TRANSCRIPTION FACTOR SOX-2
D
80Mus musculusGene Names: Sox2 (Sox-2)
Find proteins for P48432 (Mus musculus)
Go to UniProtKB:  P48432
Entity ID: 1
MoleculeChainsLengthOrganism
5'-D(*TP*TP*CP*TP*TP*TP*GP*TP*TP*TP* GP*GP*AP* TP*GP*CP*TP*AP*AP*TP*GP*GP*GP*A)-3'A24Mus musculus
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(*AP*TP*CP*CP*CP*AP*TP*TP*AP*GP* CP*AP*TP*CP*CP*AP*AP*AP*CP*AP*AP*AP*GP*A)-3'B24Mus musculus
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.232 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 72.800α = 90.00
b = 72.800β = 90.00
c = 172.400γ = 120.00
Software Package:
Software NamePurpose
SHELXphasing
SHARPphasing
CNSrefinement
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-01-30
    Type: Initial release
  • Version 1.1: 2012-11-14
    Type: Database references, Derived calculations, Non-polymer description, Other, Refinement description