4CI6

Mechanisms of crippling actin-dependent phagocytosis by YopO


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Yersinia Effector Yopo Uses Actin as Bait to Phosphorylate Proteins that Regulate Actin Polymerization.

Lee, W.L.Grimes, J.M.Robinson, R.C.

(2015) Nat Struct Mol Biol 22: 248

  • DOI: 10.1038/nsmb.2964
  • Primary Citation of Related Structures:  
    4CI6

  • PubMed Abstract: 
  • Pathogenic Yersinia species evade host immune systems through the injection of Yersinia outer proteins (Yops) into phagocytic cells. One Yop, YopO, also known as YpkA, induces actin-filament disruption, impairing phagocytosis. Here we describe the X-ray structure of Yersinia enterocolitica YopO in complex with actin, which reveals that YopO binds to an actin monomer in a manner that blocks polymerization yet allows the bound actin to interact with host actin-regulating proteins ...

    Pathogenic Yersinia species evade host immune systems through the injection of Yersinia outer proteins (Yops) into phagocytic cells. One Yop, YopO, also known as YpkA, induces actin-filament disruption, impairing phagocytosis. Here we describe the X-ray structure of Yersinia enterocolitica YopO in complex with actin, which reveals that YopO binds to an actin monomer in a manner that blocks polymerization yet allows the bound actin to interact with host actin-regulating proteins. SILAC-MS and biochemical analyses confirm that actin-polymerization regulators such as VASP, EVL, WASP, gelsolin and the formin diaphanous 1 are directly sequestered and phosphorylated by YopO through formation of ternary complexes with actin. This leads to a model in which YopO at the membrane sequesters actin from polymerization while using the bound actin as bait to recruit, phosphorylate and misregulate host actin-regulating proteins to disrupt phagocytosis.


    Organizational Affiliation

    1] Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), Singapore. [2] Department of Biochemistry, National University of Singapore, Singapore.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ACTINA376Spodoptera frugiperdaMutation(s): 0 
UniProt
Find proteins for G3CKA6 (Spodoptera frugiperda)
Explore G3CKA6 
Go to UniProtKB:  G3CKA6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN KINASE YOPOB643Yersinia enterocoliticaMutation(s): 5 
Gene Names: yopOypkAERS008652_04012
EC: 2.7.11.1
UniProt
Find proteins for Q93KQ6 (Yersinia enterocolitica)
Explore Q93KQ6 
Go to UniProtKB:  Q93KQ6
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP (Subject of Investigation/LOI)
Query on ATP

Download Ideal Coordinates CCD File 
C [auth A]ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
D [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.799α = 90
b = 121.85β = 94.87
c = 89.339γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-01-28
    Type: Initial release
  • Version 1.1: 2015-02-11
    Changes: Database references
  • Version 1.2: 2015-03-04
    Changes: Database references
  • Version 1.3: 2015-03-18
    Changes: Database references