6B5B

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


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 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
  • Primary Citation of Related Structures:  
    6B5B

  • 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 for ligand-induced NLR activation has so far remained unknown ...

    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

    Cancer Research Laboratory and Immunotherapeutics and Vaccine Research Initiative, University of California, Berkeley, CA 94720, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Baculoviral IAP repeat-containing protein 1eA1403Mus musculusMutation(s): 0 
Gene Names: Naip5Birc1eNaip-rs3
UniProt
Find proteins for Q9R016 (Mus musculus)
Explore Q9R016 
Go to UniProtKB:  Q9R016
Entity Groups  
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UniProt GroupQ9R016
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
NLR family CARD domain-containing protein 4B, C1024Mus musculusMutation(s): 0 
Gene Names: Nlrc4Card12Ipaf
UniProt
Find proteins for Q3UP24 (Mus musculus)
Explore Q3UP24 
Go to UniProtKB:  Q3UP24
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UniProt GroupQ3UP24
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
FlagellinD [auth F]566Legionella pneumophilaMutation(s): 0 
Gene Names: fliC
UniProt
Find proteins for Q5ZVV0 (Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513))
Explore Q5ZVV0 
Go to UniProtKB:  Q5ZVV0
Entity Groups  
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UniProt GroupQ5ZVV0
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
MinecoSpainBFU2016-76220-P
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI075039
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI063302

Revision History  (Full details and data files)

  • Version 1.0: 2017-11-15
    Type: Initial release
  • Version 1.1: 2017-11-29
    Changes: Database references
  • Version 1.2: 2017-12-06
    Changes: Author supporting evidence
  • Version 1.3: 2019-12-11
    Changes: Author supporting evidence