6MQD

Myotoxin II from Bothrops moojeni complexed with Rosmarinic Acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.157 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Search for efficient inhibitors of myotoxic activity induced by ophidian phospholipase A2-like proteins using functional, structural and bioinformatics approaches.

Salvador, G.H.M.Cardoso, F.F.Gomes, A.A.Cavalcante, W.L.G.Gallacci, M.Fontes, M.R.M.

(2019) Sci Rep 9: 510-510

  • DOI: 10.1038/s41598-018-36839-6
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Ophidian accidents are considered an important neglected tropical disease by the World Health Organization. Particularly in Latin America, Bothrops snakes are responsible for the majority of the snakebite envenomings that are not efficiently treated ...

    Ophidian accidents are considered an important neglected tropical disease by the World Health Organization. Particularly in Latin America, Bothrops snakes are responsible for the majority of the snakebite envenomings that are not efficiently treated by conventional serum therapy. Thus, the search for simple and efficient inhibitors to complement this therapy is a promising research area, and a combination of functional and structural assays have been used to test candidate ligands against specific ophidian venom compounds. Herein, we tested a commercial drug (acetylsalicylic acid, ASA) and a plant compound with antiophidian properties (rosmarinic acid, RA) using myographic, crystallographic and bioinformatics experiments with a phospholipase A 2 -like toxin, MjTX-II. MjTX-II/RA and MjTX-II/ASA crystal structures were solved at high resolution and revealed the presence of ligands bound to different regions of the toxin. However, in vitro myographic assays showed that only RA is able to prevent the myotoxic effects of MjTX-II. In agreement with functional results, molecular dynamics simulations showed that the RA molecule remains tightly bound to the toxin throughout the calculations, whereas ASA molecules tend to dissociate. This approach aids the design of effective inhibitors of PLA 2 -like toxins and, eventually, may complement serum therapy.


    Organizational Affiliation

    Depto. de Física e Biofísica, Instituto de Biociências, UNESP - Universidade Estadual Paulista, Botucatu, SP, Brazil.,Depto. de Física e Biofísica, Instituto de Biociências, UNESP - Universidade Estadual Paulista, Botucatu, SP, Brazil. marcos.fontes@unesp.br.,Depto. de Farmacologia, UFMG - Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.,Depto. de Farmacologia, Instituto de Biociências, UNESP - Universidade Estadual Paulista, Botucatu, SP, Brazil.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Basic phospholipase A2 homolog 2
A, B
122Bothrops moojeniMutation(s): 0 
Find proteins for Q9I834 (Bothrops moojeni)
Go to UniProtKB:  Q9I834
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ROA
Query on ROA

Download SDF File 
Download CCD File 
A
(2R)-3-(3,4-dihydroxyphenyl)-2-{[(2E)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxy}propanoic acid
Rosmarinic acid
C18 H16 O8
DOUMFZQKYFQNTF-WUTVXBCWSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.157 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 46.076α = 90.00
b = 65.839β = 90.00
c = 90.420γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-03-20
    Type: Initial release