Crystal structure of Thymidylate Synthase Complementing Protein (TM0449) from Thermotoga maritima with dUMP at 2.4 A resolution

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.199 

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This is version 1.6 of the entry. See complete history


Functional Analysis of Substrate and Cofactor Complex Structures of a Thymidylate Synthase-Complementing Protein

Mathews, I.I.Deacon, A.M.Canaves, J.M.McMullan, D.Lesley, S.A.Agarwalla, S.Kuhn, P.

(2003) Structure 11: 677-690

  • DOI: https://doi.org/10.1016/s0969-2126(03)00097-2
  • Primary Citation of Related Structures:  
    1O24, 1O25, 1O26, 1O27, 1O28, 1O29, 1O2A, 1O2B

  • PubMed Abstract: 

    Like thymidylate synthase (TS) in eukaryotes, the thymidylate synthase-complementing proteins (TSCPs) are mandatory for cell survival of many prokaryotes in the absence of external sources of thymidylate. Details of the mechanism of this novel family of enzymes are unknown. Here, we report the structural and functional analysis of a TSCP from Thermotoga maritima and its complexes with substrate, analogs, and cofactor. The structures presented here provide a basis for rationalizing the TSCP catalysis and reveal the possibility of the design of an inhibitor. We have identified a new helix-loop-strand FAD binding motif characteristic of the enzymes in the TSCP family. The presence of a hydrophobic core with residues conserved among the TSCP family suggests a common overall fold.

  • Organizational Affiliation

    Stanford Synchrotron Radiation Laboratory, Stanford University, 2575 Sand Hill Road, SSRL MS 69, Menlo Park, CA 94025, USA. iimathew@stanford.edu

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Thymidylate synthase thyX
A, B, C, D
232Thermotoga maritimaMutation(s): 0 
Gene Names: TM0449
EC: 2.1.1
Find proteins for Q9WYT0 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8))
Explore Q9WYT0 
Go to UniProtKB:  Q9WYT0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9WYT0
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.199 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.682α = 90
b = 116.703β = 90
c = 141.727γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
RESOLVEmodel building
CCP4data scaling

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2003-06-24
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description
  • Version 1.4: 2018-07-18
    Changes: Data collection, Database references
  • Version 1.5: 2023-01-25
    Changes: Database references, Derived calculations
  • Version 1.6: 2023-09-20
    Changes: Data collection, Refinement description