1DCO

DCOH, A BIFUNCTIONAL PROTEIN-BINDING TRANSCRIPTIONAL COACTIVATOR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

High-resolution structures of the bifunctional enzyme and transcriptional coactivator DCoH and its complex with a product analogue.

Cronk, J.D.Endrizzi, J.A.Alber, T.

(1996) Protein Sci. 5: 1963-1972

  • DOI: 10.1002/pro.5560051002
  • Primary Citation of Related Structures:  1DCP

  • PubMed Abstract: 
  • DCoH, the dimerization cofactor of hepatocyte nuclear factor 1 (HNF-1), functions as both a transcriptional coactivator and a pterin dehydratase. To probe the relationship between these two functions, the X-ray crystal structures of the free enzyme a ...

    DCoH, the dimerization cofactor of hepatocyte nuclear factor 1 (HNF-1), functions as both a transcriptional coactivator and a pterin dehydratase. To probe the relationship between these two functions, the X-ray crystal structures of the free enzyme and its complex with the product analogue 7,8-dihydrobiopterin were refined at 2.3 A resolution. The ligand binds at four sites per tetrameric enzyme, with little apparent conformational change in the protein. Each active-site cleft is located in a subunit interface, adjacent to a prominent saddle motif that has structural similarities to the TATA binding protein. The pterin binds within an arch of aromatic residues that extends across one dimer interface. The bound ligand makes contacts to three conserved histidines, and this arrangement restricts proposals for the enzymatic mechanism of dehydration. The dihedral symmetry of DCoH suggests that binding to the dimerization domain of HNF-1 likely involves the superposition of two-fold rotation axes of the two proteins.


    Related Citations: 
    • Crystal Structure of DCoH, a Bifunctional, Protein-Binding Transcriptional Coactivator
      Endrizzi, J.A.,Cronk, J.D.,Wang, W.,Crabtree, G.R.,Alber, T.
      (1995) Science 268: 556


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of California at Berkeley 94720-3206, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DCOH
A, B, C, D, E, F, G, H
104Rattus norvegicusGene Names: Pcbd1 (Dcoh, Pcbd)
EC: 4.2.1.96
Find proteins for P61459 (Rattus norvegicus)
Go to UniProtKB:  P61459
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 105.650α = 90.00
b = 105.650β = 90.00
c = 196.230γ = 120.00
Software Package:
Software NamePurpose
R-AXISdata scaling
R-AXISdata reduction
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-12-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance