4MUB

Schistosoma mansoni (Blood Fluke) Sulfotransferase/Oxamniquine Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Genetic and molecular basis of drug resistance and species-specific drug action in schistosome parasites.

Valentim, C.L.Cioli, D.Chevalier, F.D.Cao, X.Taylor, A.B.Holloway, S.P.Pica-Mattoccia, L.Guidi, A.Basso, A.Tsai, I.J.Berriman, M.Carvalho-Queiroz, C.Almeida, M.Aguilar, H.Frantz, D.E.Hart, P.J.LoVerde, P.T.Anderson, T.J.

(2013) Science 342: 1385-1389

  • DOI: 10.1126/science.1243106
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Oxamniquine resistance evolved in the human blood fluke (Schistosoma mansoni) in Brazil in the 1970s. We crossed parental parasites differing ~500-fold in drug response, determined drug sensitivity and marker segregation in clonally derived second-ge ...

    Oxamniquine resistance evolved in the human blood fluke (Schistosoma mansoni) in Brazil in the 1970s. We crossed parental parasites differing ~500-fold in drug response, determined drug sensitivity and marker segregation in clonally derived second-generation progeny, and identified a single quantitative trait locus (logarithm of odds = 31) on chromosome 6. A sulfotransferase was identified as the causative gene by using RNA interference knockdown and biochemical complementation assays, and we subsequently demonstrated independent origins of loss-of-function mutations in field-derived and laboratory-selected resistant parasites. These results demonstrate the utility of linkage mapping in a human helminth parasite, while crystallographic analyses of protein-drug interactions illuminate the mode of drug action and provide a framework for rational design of oxamniquine derivatives that kill both S. mansoni and S. haematobium, the two species responsible for >99% of schistosomiasis cases worldwide.


    Organizational Affiliation

    Departments of Biochemistry and Pathology, University of Texas Health Science Center, San Antonio, TX 78229, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sulfotransferase
A
259Schistosoma mansoniMutation(s): 0 
Gene Names: SULT-OR
Find proteins for G4VLE5 (Schistosoma mansoni)
Go to UniProtKB:  G4VLE5
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
A3P
Query on A3P

Download SDF File 
Download CCD File 
A
ADENOSINE-3'-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
WHTCPDAXWFLDIH-KQYNXXCUSA-N
 Ligand Interaction
OAQ
Query on OAQ

Download SDF File 
Download CCD File 
A
{(2S)-7-nitro-2-[(propan-2-ylamino)methyl]-1,2,3,4-tetrahydroquinolin-6-yl}methanol
Oxamniquine
C14 H21 N3 O3
XCGYUJZMCCFSRP-LBPRGKRZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.171 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 139.578α = 90.00
b = 39.163β = 90.00
c = 53.577γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
CrystalCleardata collection
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2013-12-18
    Type: Initial release
  • Version 1.1: 2014-01-15
    Type: Database references