5EYT

Crystal Structure of Adenylosuccinate Lyase from Schistosoma mansoni in complex with AMP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3649 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural and kinetic analysis of Schistosoma mansoni Adenylosuccinate Lyase (SmADSL).

Romanello, L.Serrao, V.H.Torini, J.R.Bird, L.E.Nettleship, J.E.Rada, H.Reddivari, Y.Owens, R.J.DeMarco, R.Brandao-Neto, J.Pereira, H.D.

(2017) Mol. Biochem. Parasitol. 214: 27-35

  • DOI: 10.1016/j.molbiopara.2017.03.006
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Schistosoma mansoni is the parasite responsible for schistosomiasis, a disease that affects about 218 million people worldwide. Currently, both direct treatment and disease control initiatives rely on chemotherapy using a single drug, praziquantel. C ...

    Schistosoma mansoni is the parasite responsible for schistosomiasis, a disease that affects about 218 million people worldwide. Currently, both direct treatment and disease control initiatives rely on chemotherapy using a single drug, praziquantel. Concerns over the possibility of resistance developing to praziquantel, have stimulated efforts to develop new drugs for the treatment of schistosomiasis. Schistosomes do not have the de novo purine biosynthetic pathway, and instead depend entirely on the purine salvage pathway to supply its need for purines. The purine salvage pathway has been reported as a potential target for developing new drugs against schistosomiasis. Adenylosuccinate lyase (SmADSL) is an enzyme in this pathway, which cleaves adenylosuccinate (ADS) into adenosine 5'-monophosphate (AMP) and fumarate. SmADSL kinetic characterization was performed by isothermal titration calorimetry (ITC) using both ADS and SAICAR as substrates. Structures of SmADSL in Apo form and in complex with AMP were elucidated by x-ray crystallography revealing a highly conserved tetrameric structure required for their function since the active sites are formed from residues of three different subunits. The active sites are also highly conserved between species and it is difficult to identify a potent species-specific inhibitor for the development of new therapeutic agents. In contrast, several mutagenesis studies have demonstrated the importance of dimeric interface residues in the stability of the quaternary structure of the enzyme. The lower conservation of these residues between SmADSL and human ADSL could be used to lead the development of anti-schistosomiasis drugs based on disruption of subunit interfaces. These structures and kinetics data add another layer of information to Schistosoma mansoni purine salvage pathway.


    Organizational Affiliation

    Laboratório de Biologia Estrutural, Instituto de Física de São Carlos, Universidade de São Paulo, 13563-120, São Carlos, SP, Brazil.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Adenylosuccinate lyase
A
497Schistosoma mansoniMutation(s): 0 
EC: 4.3.2.2
Find proteins for G4VQX9 (Schistosoma mansoni)
Go to UniProtKB:  G4VQX9
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AMP
Query on AMP

Download SDF File 
Download CCD File 
A
ADENOSINE MONOPHOSPHATE
C10 H14 N5 O7 P
UDMBCSSLTHHNCD-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3649 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.192 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 70.466α = 90.00
b = 73.114β = 90.00
c = 180.280γ = 90.00
Software Package:
Software NamePurpose
xia2data reduction
PHENIXrefinement
PDB_EXTRACTdata extraction
xia2data scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
FAPESPBrazil2012/14223-9
CNPqBrazil474402/2013-4

Revision History 

  • Version 1.0: 2016-11-30
    Type: Initial release
  • Version 1.1: 2017-04-12
    Type: Database references
  • Version 1.2: 2017-04-19
    Type: Database references
  • Version 1.3: 2017-11-01
    Type: Author supporting evidence, Data collection