1RP0

Crystal Structure of Thi1 protein from Arabidopsis thaliana


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.171 
  • R-Value Work: 0.139 
  • R-Value Observed: 0.141 

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This is version 1.3 of the entry. See complete history


Literature

Structure of the thiazole biosynthetic enzyme THI1 from Arabidopsis thaliana.

Godoi, P.H.Galhardo, R.S.Luche, D.D.Van Sluys, M.A.Menck, C.F.Oliva, G.

(2006) J Biol Chem 281: 30957-30966

  • DOI: https://doi.org/10.1074/jbc.M604469200
  • Primary Citation of Related Structures:  
    1RP0

  • PubMed Abstract: 

    Thiamin pyrophosphate is an essential coenzyme in all organisms that depend on fermentation, respiration or photosynthesis to produce ATP. It is synthesized through two independent biosynthetic routes: one for the synthesis of 2-methyl-4-amino-5-hydroxymethylpyrimidine pyrophosphate (pyrimidine moiety) and another for the synthesis of 4-methyl-5-(beta-hydroxyethyl) thiazole phosphate (thiazole moiety). Herein, we will describe the three-dimensional structure of THI1 protein from Arabidopsis thaliana determined by single wavelength anomalous diffraction to 1.6A resolution. The protein was produced using heterologous expression in bacteria, unexpectedly bound to 2-carboxylate-4-methyl-5-beta-(ethyl adenosine 5-diphosphate) thiazole, a potential intermediate of the thiazole biosynthesis in Eukaryotes. THI1 has a topology similar to dinucleotide binding domains and although details concerning its function are unknown, this work provides new clues about the thiazole biosynthesis in Eukaryotes.


  • Organizational Affiliation

    Departamento de Física e Informática, Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, CP 369, 13560-970, Brazil.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Thiazole biosynthetic enzyme
A, B
284Arabidopsis thalianaMutation(s): 0 
Gene Names: THI1THI4AT5G54770MBG8.3
EC: 2.4.2.60
UniProt
Find proteins for Q38814 (Arabidopsis thaliana)
Explore Q38814 
Go to UniProtKB:  Q38814
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ38814
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.171 
  • R-Value Work: 0.139 
  • R-Value Observed: 0.141 
  • Space Group: F 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.356α = 90
b = 133.147β = 90
c = 142.301γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-02-22
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Derived calculations, Version format compliance
  • Version 1.3: 2024-02-14
    Changes: Data collection, Database references, Derived calculations