Complex of potato ATG8 protein with a peptide from Irish potato famine pathogen effector protein PexRD54

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 

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Structural Basis of Host Autophagy-related Protein 8 (ATG8) Binding by the Irish Potato Famine Pathogen Effector Protein PexRD54.

Maqbool, A.Hughes, R.K.Dagdas, Y.F.Tregidgo, N.Zess, E.Belhaj, K.Round, A.Bozkurt, T.O.Kamoun, S.Banfield, M.J.

(2016) J Biol Chem 291: 20270-20282

  • DOI: https://doi.org/10.1074/jbc.M116.744995
  • Primary Citation of Related Structures:  
    5L7S, 5L83

  • PubMed Abstract: 

    Filamentous plant pathogens deliver effector proteins to host cells to promote infection. The Phytophthora infestans RXLR-type effector PexRD54 binds potato ATG8 via its ATG8 family-interacting motif (AIM) and perturbs host-selective autophagy. However, the structural basis of this interaction remains unknown. Here, we define the crystal structure of PexRD54, which includes a modular architecture, including five tandem repeat domains, with the AIM sequence presented at the disordered C terminus. To determine the interface between PexRD54 and ATG8, we solved the crystal structure of potato ATG8CL in complex with a peptide comprising the effector's AIM sequence, and we established a model of the full-length PexRD54-ATG8CL complex using small angle x-ray scattering. Structure-informed deletion of the PexRD54 tandem domains reveals retention of ATG8CL binding in vitro and in planta This study offers new insights into structure/function relationships of oomycete RXLR effectors and how these proteins engage with host cell targets to promote disease.

  • Organizational Affiliation

    the Department of Life Sciences, Imperial College, London SW7 2AZ, United Kingdom.


Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
B [auth D]
5Phytophthora infestansMutation(s): 0 
Sequence Annotations
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Autophagy-related proteinC [auth A],
D [auth B]
112Solanum tuberosumMutation(s): 0 
Gene Names: PGSC0003DMG402022314PGSC0003DMG400014422
Find proteins for M1C146 (Solanum tuberosum)
Explore M1C146 
Go to UniProtKB:  M1C146
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupM1C146
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on SO4

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
G [auth A]
H [auth A]
J [auth B]
E [auth A],
F [auth A],
G [auth A],
H [auth A],
J [auth B],
K [auth B],
L [auth B]
O4 S
Query on EDO

Download Ideal Coordinates CCD File 
I [auth A],
M [auth B],
N [auth B]
C2 H6 O2
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 
  • Space Group: I 41 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 172.18α = 90
b = 172.18β = 90
c = 172.18γ = 90
Software Package:
Software NamePurpose
xia2data reduction
xia2data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-08-03
    Type: Initial release
  • Version 1.1: 2016-08-10
    Changes: Database references
  • Version 1.2: 2016-09-28
    Changes: Database references