Saccharomyces cerevisiae THI4p is a suicide thiamin thiazole synthase

Experimental Data Snapshot

  • Resolution: 1.82 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.198 

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This is version 1.4 of the entry. See complete history


Saccharomyces cerevisiae THI4p is a suicide thiamine thiazole synthase.

Chatterjee, A.Abeydeera, N.D.Bale, S.Pai, P.J.Dorrestein, P.C.Russell, D.H.Ealick, S.E.Begley, T.P.

(2011) Nature 478: 542-546

  • DOI: https://doi.org/10.1038/nature10503
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Thiamine pyrophosphate 1 is an essential cofactor in all living systems. Its biosynthesis involves the separate syntheses of the pyrimidine 2 and thiazole 3 precursors, which are then coupled. Two biosynthetic routes to the thiamine thiazole have been identified. In prokaryotes, five enzymes act on three substrates to produce the thiazole via a complex oxidative condensation reaction, the mechanistic details of which are now well established. In contrast, only one gene product is involved in thiazole biosynthesis in eukaryotes (THI4p in Saccharomyces cerevisiae). Here we report the preparation of fully active recombinant wild-type THI4p, the identification of an iron-dependent sulphide transfer reaction from a conserved cysteine residue of the protein to a reaction intermediate and the demonstration that THI4p is a suicide enzyme undergoing only a single turnover.

  • Organizational Affiliation

    Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Thiazole biosynthetic enzyme
A, B
326Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: THI4ESP35MOL1YGR144WG6620
Find proteins for P32318 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P32318 
Go to UniProtKB:  P32318
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP32318
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.82 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.198 
  • Space Group: I 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 140.696α = 90
b = 140.696β = 90
c = 73.325γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
ADSCdata collection
HKL-2000data reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-01-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-11-09
    Changes: Database references
  • Version 1.3: 2017-11-01
    Changes: Refinement description
  • Version 1.4: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description