1DCP

DCOH, A BIFUNCTIONAL PROTEIN-BINDING TRANSCRIPTIONAL COACTIVATOR, COMPLEXED WITH BIOPTERIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 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:  
    1DCO, 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 and its complex with the product analogue 7,8-dihydrobiopterin were refined at 2 ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DCOHA, B, C, D, E, F, G, H104Rattus norvegicusMutation(s): 0 
Gene Names: Pcbd1DcohPcbd
EC: 4.2.1.96
UniProt
Find proteins for P61459 (Rattus norvegicus)
Explore P61459 
Go to UniProtKB:  P61459
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.7α = 90
b = 105.7β = 90
c = 196.17γ = 120
Software Package:
Software NamePurpose
TNTrefinement
R-AXISdata reduction
R-AXISdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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