1ZUD

Structure of ThiS-ThiF protein complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.174 

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This is version 1.2 of the entry. See complete history


Literature

Structure of the Escherichia coli ThiS-ThiF Complex, a Key Component of the Sulfur Transfer System in Thiamin Biosynthesis.

Lehmann, C.Begley, T.P.Ealick, S.E.

(2006) Biochemistry 45: 11-19

  • DOI: 10.1021/bi051502y
  • Primary Citation of Related Structures:  
    1ZUD

  • PubMed Abstract: 
  • We have determined the crystal structure of the Escherichia coli ThiS-ThiF protein complex at 2.0 A resolution. ThiS and ThiF are bacterial proteins involved in the synthesis of the thiazole moiety of thiamin. ThiF catalyzes the adenylation of the carboxy terminus of ThiS and the subsequent displacement of AMP catalyzed by ThiI-persulfide to give a ThiS-ThiI acyl disulfide ...

    We have determined the crystal structure of the Escherichia coli ThiS-ThiF protein complex at 2.0 A resolution. ThiS and ThiF are bacterial proteins involved in the synthesis of the thiazole moiety of thiamin. ThiF catalyzes the adenylation of the carboxy terminus of ThiS and the subsequent displacement of AMP catalyzed by ThiI-persulfide to give a ThiS-ThiI acyl disulfide. Disulfide interchange, involving Cys184 on ThiF, then generates the ThiS-ThiF acyl disulfide, which functions as the sulfur donor for thiazole formation. ThiS is a small 7.2 kDa protein that structurally resembles ubiquitin and the molybdopterin biosynthetic protein MoaD. ThiF is a 27 kDa protein with distinct sequence and structural similarity to the ubiquitin activating enzyme E1 and the molybdopterin biosynthetic protein MoeB. The ThiF-ThiS structure clarifies the mechanism of the sulfur transfer chemistry involved in thiazole biosynthesis.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Adenylyltransferase thiFA [auth 1], C [auth 3]251Escherichia coli K-12Mutation(s): 0 
Gene Names: thiFb3992JW3956
EC: 2.7.7 (PDB Primary Data), 2.7.7.73 (UniProt)
Find proteins for P30138 (Escherichia coli (strain K12))
Explore P30138 
Go to UniProtKB:  P30138
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ThiS proteinB [auth 2], D [auth 4]66Escherichia coli K-12Mutation(s): 0 
Gene Names: thiSthiG1b4407JW3955
Find proteins for O32583 (Escherichia coli (strain K12))
Explore O32583 
Go to UniProtKB:  O32583
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.174 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.505α = 90
b = 111.171β = 90
c = 114.153γ = 90
Software Package:
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-01-31
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Source and taxonomy, Version format compliance