Structural Analysis of Escherichia coli ThiF

Experimental Data Snapshot

  • Resolution: 2.75 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.247 

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Structural Analysis of Escherichia Coli ThiF.

Duda, D.M.Walden, H.Sfondouris, J.Schulman, B.A.

(2005) J Mol Biol 349: 774-786

  • DOI: https://doi.org/10.1016/j.jmb.2005.04.011
  • Primary Citation of Related Structures:  
    1ZFN, 1ZKM

  • PubMed Abstract: 

    Escherichia coli ThiF is an enzyme in the biosynthetic cascade for generating the essential cofactor thiamin pyrophosphate. In this cascade, ThiF catalyzes adenylation of the C terminus of ThiS. We report here the crystal structures of ThiF, alone and in complex with ATP. The structures provide insight into a preference for ATP during adenylation of the protein ThiS. Additionally, the structures reveal an ordered crossover loop predicted to clamp the flexible tail of ThiS into the ThiF active site during the adenylation reaction. The importance of the crossover loop for ThiF activity is highlighted by mutational analysis. Comparison of ThiF with the structural homologues MoeB, APPBP1-UBA3, and SAE1-SAE2 reveals that the ATP-binding site, including an arginine-finger, is maintained throughout evolution, and shows divergence occurring in protein substrate-binding sites and regions devoted to unique steps in the specific function of each enzyme.

  • Organizational Affiliation

    Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Adenylyltransferase thiF
A, B, C, D
253Escherichia coliMutation(s): 0 
Gene Names: thiF
EC: 2.7.7 (PDB Primary Data), (UniProt)
Find proteins for P30138 (Escherichia coli (strain K12))
Explore P30138 
Go to UniProtKB:  P30138
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP30138
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.75 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.247 
  • Space Group: F 41 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 360.3α = 90
b = 360.3β = 90
c = 360.3γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-06-14
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2014-11-12
    Changes: Structure summary
  • Version 1.4: 2014-11-19
    Changes: Derived calculations