1OCT

CRYSTAL STRUCTURE OF THE OCT-1 POU DOMAIN BOUND TO AN OCTAMER SITE: DNA RECOGNITION WITH TETHERED DNA-BINDING MODULES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the Oct-1 POU domain bound to an octamer site: DNA recognition with tethered DNA-binding modules.

Klemm, J.D.Rould, M.A.Aurora, R.Herr, W.Pabo, C.O.

(1994) Cell 77: 21-32


  • PubMed Abstract: 
  • The structure of an Oct-1 POU domain-octamer DNA complex has been solved at 3.0 A resolution. The POU-specific domain contacts the 5' half of this site (ATGCAAAT), and as predicted from nuclear magnetic resonance studies, the structure, docking, and ...

    The structure of an Oct-1 POU domain-octamer DNA complex has been solved at 3.0 A resolution. The POU-specific domain contacts the 5' half of this site (ATGCAAAT), and as predicted from nuclear magnetic resonance studies, the structure, docking, and contacts are remarkably similar to those of the lambda and 434 repressors. The POU homeodomain contacts the 3' half of this site (ATGCAAAT), and the docking is similar to that of the engrailed, MAT alpha 2, and Antennapedia homeodomains. The linker region is not visible and there are no protein-protein contacts between the domains, but overlapping phosphate contacts near the center of the octamer site may favor cooperative binding. This novel arrangement raises important questions about cooperativity in protein-DNA recognition.


    Organizational Affiliation

    Department of Biology, Massachusetts Institute of Technology, Cambridge 02139.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (OCT-1 POU DOMAIN)
C
156Homo sapiensMutation(s): 0 
Gene Names: POU2F1 (OCT1, OTF1)
Find proteins for P14859 (Homo sapiens)
Go to Gene View: POU2F1
Go to UniProtKB:  P14859
Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*TP*GP*TP*AP*TP*GP*CP*AP*AP*AP*TP*AP*AP*GP*G)-3')A15N/A
Entity ID: 2
MoleculeChainsLengthOrganism
DNA (5'-D(*AP*CP*CP*TP*TP*AP*TP*TP*TP*GP*CP*AP*TP*AP*C)-3')B15N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Work: 0.237 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 97.500α = 90.00
b = 89.800β = 90.00
c = 80.000γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-08-31
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance