5K35

Structure of the Legionella effector, AnkB, in complex with human Skp1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.222 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structural Mimicry by a Bacterial F Box Effector Hijacks the Host Ubiquitin-Proteasome System.

Wong, K.Perpich, J.D.Kozlov, G.Cygler, M.Abu Kwaik, Y.Gehring, K.

(2017) Structure 25: 376-383

  • DOI: 10.1016/j.str.2016.12.015
  • Primary Citation of Related Structures:  
    5K34, 5K35

  • PubMed Abstract: 
  • Ankyrin B (AnkB/LegAU13) is a translocated F box effector essential for the intracellular replication of the pathogen Legionella pneumophila. AnkB co-opts a host ubiquitin ligase to decorate the pathogen-containing vacuole with K 48 -linked polyubiquitinated proteins and degrade host proteins as a source of energy ...

    Ankyrin B (AnkB/LegAU13) is a translocated F box effector essential for the intracellular replication of the pathogen Legionella pneumophila. AnkB co-opts a host ubiquitin ligase to decorate the pathogen-containing vacuole with K 48 -linked polyubiquitinated proteins and degrade host proteins as a source of energy. Here, we report that AnkB commandeers the host ubiquitin-proteasome system through mimicry of two eukaryotic protein domains. Using X-ray crystallography, we determined the 3D structure of AnkB in complex with Skp1, a component of the human SCF ubiquitination ligase. The structure confirms that AnkB contains an N-terminal F box similar to Skp2 and a C-terminal substrate-binding domain similar to eukaryotic ankyrin repeats. We identified crucial amino acids in the substrate-binding domain of AnkB and showed them to be essential for the function of AnkB in L. pneumophila intracellular proliferation. The study reveals how Legionella uses molecular mimicry to manipulate the host ubiquitination pathway and proliferate intracellularly.


    Organizational Affiliation

    Department of Biochemistry and Groupe de recherche axé sur la structure des protéines, McGill University, Montreal, QC H3G 0B1, Canada. Electronic address: kalle.gehring@mcgill.ca.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ankyrin-repeat protein BA182Legionella pneumophilaMutation(s): 0 
Gene Names: ankB
UniProt
Find proteins for Q5ZTL7 (Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513))
Explore Q5ZTL7 
Go to UniProtKB:  Q5ZTL7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5ZTL7
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
S-phase kinase-associated protein 1B163Homo sapiensMutation(s): 0 
Gene Names: SKP1EMC19OCP2SKP1ATCEB1L
UniProt & NIH Common Fund Data Resources
Find proteins for P63208 (Homo sapiens)
Explore P63208 
Go to UniProtKB:  P63208
PHAROS:  P63208
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63208
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.222 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.576α = 90
b = 57.039β = 90
c = 150.891γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
SHELXDEphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Canadian Institutes of Health Research (CIHR)CanadaGSP-48370

Revision History  (Full details and data files)

  • Version 1.0: 2017-01-25
    Type: Initial release
  • Version 1.1: 2017-02-08
    Changes: Database references
  • Version 1.2: 2017-02-22
    Changes: Database references
  • Version 1.3: 2017-09-20
    Changes: Author supporting evidence
  • Version 1.4: 2020-01-08
    Changes: Author supporting evidence