2Y8T

Co-structure of AMA1 with a surface exposed region of RON2 from Toxoplasma gondii


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Host Cell Invasion by Apicomplexan Parasites: Insights from the Co-Structure of Ama1 with a Ron2 Peptide

Tonkin, M.L.Roques, M.Lamarque, M.H.Pugniere, M.Douguet, D.Crawford, J.Lebrun, M.Boulanger, M.J.

(2011) Science 333: 463

  • DOI: 10.1126/science.1204988
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Apicomplexan parasites such as Toxoplasma gondii and Plasmodium species actively invade host cells through a moving junction (MJ) complex assembled at the parasite-host cell interface. MJ assembly is initiated by injection of parasite rhoptry neck pr ...

    Apicomplexan parasites such as Toxoplasma gondii and Plasmodium species actively invade host cells through a moving junction (MJ) complex assembled at the parasite-host cell interface. MJ assembly is initiated by injection of parasite rhoptry neck proteins (RONs) into the host cell, where RON2 spans the membrane and functions as a receptor for apical membrane antigen 1 (AMA1) on the parasite. We have determined the structure of TgAMA1 complexed with a RON2 peptide at 1.95 angstrom resolution. A stepwise assembly mechanism results in an extensive buried surface area, enabling the MJ complex to resist the mechanical forces encountered during host cell invasion. Besides providing insights into host cell invasion by apicomplexan parasites, the structure offers a basis for designing therapeutics targeting these global pathogens.


    Organizational Affiliation

    Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia V8W 3P6, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
APICAL MEMBRANE ANTIGEN, PUTATIVE
A, D
432Toxoplasma gondii (strain ATCC 50861 / VEG)Mutation(s): 0 
Gene Names: AMA1
Find proteins for B6KAM0 (Toxoplasma gondii (strain ATCC 50861 / VEG))
Go to UniProtKB:  B6KAM0
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RHOPTRY NECK PROTEIN 2
B, E
37Toxoplasma gondii (strain ATCC 50611 / Me49)Mutation(s): 0 
Gene Names: RON2
Find proteins for B6KV60 (Toxoplasma gondii (strain ATCC 50611 / Me49))
Go to UniProtKB:  B6KV60
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BO3
Query on BO3

Download SDF File 
Download CCD File 
D
BORIC ACID
B H3 O3
KGBXLFKZBHKPEV-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, D
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
9AT
Query on 9AT
B, E
L-PEPTIDE LINKINGC4 H10 N2 O2

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.170 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 69.860α = 90.00
b = 96.380β = 115.64
c = 78.350γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-03
    Type: Initial release
  • Version 1.1: 2019-04-03
    Type: Data collection, Derived calculations, Other, Source and taxonomy