5F73

Crystal structure of Mutant S12T of Adenosine/Methylthioadenosine Phosphorylase in APO form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.06 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.175 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Crystal Structure of Schistosoma mansoni Adenosine Phosphorylase/5'-Methylthioadenosine Phosphorylase and Its Importance on Adenosine Salvage Pathway.

Torini, J.R.Brandao-Neto, J.DeMarco, R.Pereira, H.D.

(2016) PLoS Negl Trop Dis 10: e0005178-e0005178

  • DOI: 10.1371/journal.pntd.0005178
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Schistosoma mansoni do not have de novo purine pathways and rely on purine salvage for their purine supply. It has been demonstrated that, unlike humans, the S. mansoni is able to produce adenine directly from adenosine, although the enzyme responsib ...

    Schistosoma mansoni do not have de novo purine pathways and rely on purine salvage for their purine supply. It has been demonstrated that, unlike humans, the S. mansoni is able to produce adenine directly from adenosine, although the enzyme responsible for this activity was unknown. In the present work we show that S. mansoni 5´-deoxy-5´-methylthioadenosine phosphorylase (MTAP, E.C. 2.4.2.28) is capable of use adenosine as a substrate to the production of adenine. Through kinetics assays, we show that the Schistosoma mansoni MTAP (SmMTAP), unlike the mammalian MTAP, uses adenosine substrate with the same efficiency as MTA phosphorolysis, which suggests that this enzyme is part of the purine pathway salvage in S. mansoni and could be a promising target for anti-schistosoma therapies. Here, we present 13 SmMTAP structures from the wild type (WT), including three single and one double mutant, and generate a solid structural framework for structure description. These crystal structures of SmMTAP reveal that the active site contains three substitutions within and near the active site when compared to it mammalian counterpart, thus opening up the possibility of developing specific inhibitors to the parasite MTAP. The structural and kinetic data for 5 substrates reveal the structural basis for this interaction, providing substract for inteligent design of new compounds for block this enzyme activity.


    Organizational Affiliation

    Laboratório de Biologia Estrutural, Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Methylthioadenosine phosphorylase
A, B, C, D, E, F
320Schistosoma mansoniMutation(s): 1 
EC: 2.4.2.28
Find proteins for I0B503 (Schistosoma mansoni)
Go to UniProtKB:  I0B503
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C, D, E, F
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.06 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.175 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 81.440α = 90.00
b = 82.160β = 101.50
c = 150.910γ = 90.00
Software Package:
Software NamePurpose
xia2data reduction
xia2data scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Sao Paulo Research FoundationBrazil2012/14223-9
Brazilian National Council for Scientific and Technological DevelopmentBrazil474402/2013-4

Revision History 

  • Version 1.0: 2016-12-14
    Type: Initial release
  • Version 1.1: 2016-12-21
    Type: Database references
  • Version 1.2: 2017-09-27
    Type: Author supporting evidence, Data collection
  • Version 1.3: 2017-11-01
    Type: Author supporting evidence
  • Version 1.4: 2019-04-17
    Type: Author supporting evidence, Data collection