6B5B

Cryo-EM structure of the NAIP5-NLRC4-flagellin inflammasome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structural basis of flagellin detection by NAIP5: A strategy to limit pathogen immune evasion.

Tenthorey, J.L.Haloupek, N.Lopez-Blanco, J.R.Grob, P.Adamson, E.Hartenian, E.Lind, N.A.Bourgeois, N.M.Chacon, P.Nogales, E.Vance, R.E.

(2017) Science 358: 888-893

  • DOI: 10.1126/science.aao1140

  • PubMed Abstract: 
  • Robust innate immune detection of rapidly evolving pathogens is critical for host defense. Nucleotide-binding domain leucine-rich repeat (NLR) proteins function as cytosolic innate immune sensors in plants and animals. However, the structural basis f ...

    Robust innate immune detection of rapidly evolving pathogens is critical for host defense. Nucleotide-binding domain leucine-rich repeat (NLR) proteins function as cytosolic innate immune sensors in plants and animals. However, the structural basis for ligand-induced NLR activation has so far remained unknown. NAIP5 (NLR family, apoptosis inhibitory protein 5) binds the bacterial protein flagellin and assembles with NLRC4 to form a multiprotein complex called an inflammasome. Here we report the cryo-electron microscopy structure of the assembled ~1.4-megadalton flagellin-NAIP5-NLRC4 inflammasome, revealing how a ligand activates an NLR. Six distinct NAIP5 domains contact multiple conserved regions of flagellin, prying NAIP5 into an open and active conformation. We show that innate immune recognition of multiple ligand surfaces is a generalizable strategy that limits pathogen evolution and immune escape.


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Baculoviral IAP repeat-containing protein 1e
A
1403Mus musculusMutation(s): 0 
Gene Names: Naip5 (Birc1e, Naip-rs3)
Find proteins for Q9R016 (Mus musculus)
Go to UniProtKB:  Q9R016
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
NLR family CARD domain-containing protein 4
B, C
1024Mus musculusMutation(s): 0 
Gene Names: Nlrc4 (Card12, Ipaf)
Find proteins for Q3UP24 (Mus musculus)
Go to UniProtKB:  Q3UP24
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Flagellin
F
566Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513)Mutation(s): 0 
Gene Names: fliC
Find proteins for Q5ZVV0 (Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513))
Go to UniProtKB:  Q5ZVV0
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
MinecoSpainBFU2016-76220-P
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesAI075039
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesAI063302

Revision History 

  • Version 1.0: 2017-11-15
    Type: Initial release
  • Version 1.1: 2017-11-29
    Type: Database references
  • Version 1.2: 2017-12-06
    Type: Author supporting evidence