2Y8S

Co-structure of an AMA1 mutant (Y230A) with a surface exposed region of RON2 from Toxoplasma gondii


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.189 

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
  • Structures With Same Primary Citation

  • 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: 2
MoleculeChainsSequence LengthOrganismDetails
RHOPTRY NECK PROTEIN 2
B, E
37Toxoplasma gondiiMutation(s): 0 
Find proteins for B6KV60 (Toxoplasma gondii (strain ATCC 50611 / Me49))
Go to UniProtKB:  B6KV60

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
APICAL MEMBRANE ANTIGEN, PUTATIVE
A, D
432Toxoplasma gondiiMutation(s): 1 
Find proteins for B6KAM0 (Toxoplasma gondii (strain ATCC 50861 / VEG))
Go to UniProtKB:  B6KAM0
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
A, D
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A, D
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
BO3
Query on BO3

Download CCD File 
A
BORIC ACID
B H3 O3
KGBXLFKZBHKPEV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.189 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.52α = 90
b = 96.83β = 116.75
c = 78.33γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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