1EYB

CRYSTAL STRUCTURE OF APO HUMAN HOMOGENTISATE DIOXYGENASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of human homogentisate dioxygenase.

Titus, G.P.Mueller, H.A.Burgner, J.Rodriguez De Cordoba, S.Penalva, M.A.Timm, D.E.

(2000) Nat.Struct.Mol.Biol. 7: 542-546

  • DOI: 10.1038/76756
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Homogentisate dioxygenase (HGO) cleaves the aromatic ring during the metabolic degradation of Phe and Tyr. HGO deficiency causes alkaptonuria (AKU), the first human disease shown to be inherited as a recessive Mendelian trait. Crystal structures of a ...

    Homogentisate dioxygenase (HGO) cleaves the aromatic ring during the metabolic degradation of Phe and Tyr. HGO deficiency causes alkaptonuria (AKU), the first human disease shown to be inherited as a recessive Mendelian trait. Crystal structures of apo-HGO and HGO containing an iron ion have been determined at 1.9 and 2.3 A resolution, respectively. The HGO protomer, which contains a 280-residue N-terminal domain and a 140-residue C-terminal domain, associates as a hexamer arranged as a dimer of trimers. The active site iron ion is coordinated near the interface between subunits in the HGO trimer by a Glu and two His side chains. HGO represents a new structural class of dioxygenases. The largest group of AKU associated missense mutations affect residues located in regions of contact between subunits.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, Indiana 46202, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HOMOGENTISATE 1,2-DIOXYGENASE
A
471Homo sapiensMutation(s): 10 
Gene Names: HGD (HGO)
EC: 1.13.11.5
Find proteins for Q93099 (Homo sapiens)
Go to Gene View: HGD
Go to UniProtKB:  Q93099
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.192 
  • Space Group: P 63 2 2
Unit Cell:
Length (Å)Angle (°)
a = 158.380α = 90.00
b = 158.380β = 90.00
c = 93.459γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALEPACKdata scaling
SOLVEphasing
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-11-05
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2015-06-24
    Type: Data collection