4GTE

T. Maritima FDTS (E144R mutant) with FAD and Folate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.185 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Folate binding site of flavin-dependent thymidylate synthase.

Koehn, E.M.Perissinotti, L.L.Moghram, S.Prabhakar, A.Lesley, S.A.Mathews, I.I.Kohen, A.

(2012) Proc Natl Acad Sci U S A 109: 15722-15727

  • DOI: https://doi.org/10.1073/pnas.1206077109
  • Primary Citation of Related Structures:  
    4GT9, 4GTA, 4GTB, 4GTC, 4GTD, 4GTE, 4GTF, 4GTL

  • PubMed Abstract: 

    The DNA nucleotide thymidylate is synthesized by the enzyme thymidylate synthase, which catalyzes the reductive methylation of deoxyuridylate using the cofactor methylene-tetrahydrofolate (CH(2)H(4)folate). Most organisms, including humans, rely on the thyA- or TYMS-encoded classic thymidylate synthase, whereas, certain microorganisms, including all Rickettsia and other pathogens, use an alternative thyX-encoded flavin-dependent thymidylate synthase (FDTS). Although several crystal structures of FDTSs have been reported, the absence of a structure with folates limits understanding of the molecular mechanism and the scope of drug design for these enzymes. Here we present X-ray crystal structures of FDTS with several folate derivatives, which together with mutagenesis, kinetic analysis, and computer modeling shed light on the cofactor binding and function. The unique structural data will likely facilitate further elucidation of FDTSs' mechanism and the design of structure-based inhibitors as potential leads to new antimicrobial drugs.


  • Organizational Affiliation

    Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Thymidylate synthase thyX
A, B, C, D
232Thermotoga maritima MSB8Mutation(s): 1 
Gene Names: thyXthy1TM_0449
EC: 2.1.1.148
UniProt
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
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.185 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.71α = 90
b = 117.07β = 90
c = 141.91γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
REFMACrefinement
XDSdata reduction
XDSdata scaling
REFMACphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-10-17
    Type: Initial release
  • Version 1.1: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description