2H6U

Crystal structure of 5-hydroxyisourate hydrolase (formerly known as TRP, transthyretin related protein)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of Zebra fish HIUase: Insights into Evolution of an Enzyme to a Hormone Transporter.

Zanotti, G.Cendron, L.Ramazzina, I.Folli, C.Percudani, R.Berni, R.

(2006) J.Mol.Biol. 363: 1-9

  • DOI: 10.1016/j.jmb.2006.07.079
  • Primary Citation of Related Structures:  2H1X
  • Also Cited By: 3IWU, 3IWV, 3Q1E

  • PubMed Abstract: 
  • During early vertebrate evolution, a duplication event in the gene encoding 5-hydroxyisourate hydrolase (HIUase), a widely distributed enzyme of purine metabolism, gave rise to transthyretin (TTR), a thyroid hormone transporter. We report here on the ...

    During early vertebrate evolution, a duplication event in the gene encoding 5-hydroxyisourate hydrolase (HIUase), a widely distributed enzyme of purine metabolism, gave rise to transthyretin (TTR), a thyroid hormone transporter. We report here on the crystal structure of zebra fish HIUase in two different crystal forms. Despite the phylogenetic distance, this structure compares well with those of newly characterized bacterial HIUases, especially with regard to catalytic regions, which are highly preserved. Comparison with TTR structure reveals a highly conserved scaffold, harbouring distinct functional sites located in the same regions of the two vertebrate proteins. Residues that are differentially conserved in HIUases compared to TTR map in putative catalytic regions occupying significant portions of the two halves of a central channel that transverses the whole TTR protein. The evolution of TTR has been accompanied by remarkable changes of the HIUase active sites that gave rise to a channel open at both ends, thus allowing free access to hormone molecules.


    Related Citations: 
    • Completing the Uric Acid Degradation Pathway Through Phylogenetic Comparison of Whole Genomes
      Ramazzina, I.,Folli, C.,Secchi, A.,Berni, R.,Percudani, R.
      (2006) Nat.Chem.Biol. 2: 144


    Organizational Affiliation

    Department of Chemistry, University of Padua, and ICTB, Section of Padua, Via Marzolo 1 35131 Padova, Italy. giuseppe.zanotti@unipd.it




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
5-HYDROXYISOURATE HYDROLASE (FORMERLY KNOWN AS TRP, TRANSTHYRETIN RELATED PROTEIN)
A, B, C, D, E, F, G, H
119Danio rerioGene Names: urah
EC: 3.5.2.17
Find proteins for Q06S87 (Danio rerio)
Go to UniProtKB:  Q06S87
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 64.324α = 90.00
b = 66.737β = 90.00
c = 237.393γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
CCP4data scaling
REFMACrefinement
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-10-31
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance