+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-28560 | |||||||||
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Title | NLRP3 PYD filament | |||||||||
Map data | ||||||||||
Sample |
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Keywords | inflammasome / cytosolic protein / cytosolic protein-transferase complex / IMMUNE SYSTEM | |||||||||
Function / homology | Function and homology information molecular sensor activity / detection of biotic stimulus / cysteine-type endopeptidase activator activity / phosphatidylinositol phosphate binding / positive regulation of T-helper 2 cell differentiation / NLRP3 inflammasome complex / NLRP3 inflammasome complex assembly / interphase microtubule organizing center / positive regulation of T-helper 2 cell cytokine production / osmosensory signaling pathway ...molecular sensor activity / detection of biotic stimulus / cysteine-type endopeptidase activator activity / phosphatidylinositol phosphate binding / positive regulation of T-helper 2 cell differentiation / NLRP3 inflammasome complex / NLRP3 inflammasome complex assembly / interphase microtubule organizing center / positive regulation of T-helper 2 cell cytokine production / osmosensory signaling pathway / positive regulation of type 2 immune response / peptidoglycan binding / pattern recognition receptor signaling pathway / negative regulation of non-canonical NF-kappaB signal transduction / phosphatidylinositol-4-phosphate binding / microtubule organizing center / negative regulation of interleukin-1 beta production / pyroptotic inflammatory response / positive regulation of interleukin-4 production / negative regulation of acute inflammatory response / The NLRP3 inflammasome / protein maturation / Purinergic signaling in leishmaniasis infection / signaling adaptor activity / positive regulation of interleukin-1 beta production / molecular condensate scaffold activity / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / ADP binding / protein homooligomerization / Cytoprotection by HMOX1 / cellular response to virus / Metalloprotease DUBs / defense response / negative regulation of inflammatory response / positive regulation of inflammatory response / positive regulation of non-canonical NF-kappaB signal transduction / SARS-CoV-1 activates/modulates innate immune responses / positive regulation of NF-kappaB transcription factor activity / protein-macromolecule adaptor activity / cellular response to lipopolysaccharide / DNA-binding transcription factor binding / sequence-specific DNA binding / molecular adaptor activity / inflammatory response / Golgi membrane / innate immune response / apoptotic process / SARS-CoV-2 activates/modulates innate and adaptive immune responses / signal transduction / endoplasmic reticulum / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / mitochondrion / extracellular region / ATP binding / identical protein binding / membrane / nucleus / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||
Authors | Wu H / Xiao L | |||||||||
Funding support | United States, 1 items
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Citation | Journal: Nature / Year: 2023 Title: Cryo-EM structures of the active NLRP3 inflammasome disc. Authors: Le Xiao / Venkat Giri Magupalli / Hao Wu / Abstract: Inflammasomes are cytosolic innate immune complexes that activate caspase-1 following detection of pathogenic and endogenous dangers, and NACHT-, leucine-rich repeat (LRR)- and pyrin domain (PYD)- ...Inflammasomes are cytosolic innate immune complexes that activate caspase-1 following detection of pathogenic and endogenous dangers, and NACHT-, leucine-rich repeat (LRR)- and pyrin domain (PYD)-containing protein 3 (NLRP3) is an inflammasome sensor of membrane damage highly important in regard to the induction of inflammation. Here we report cryogenic electron microscopy structures of disc-shaped active NLRP3 oligomers in complex with adenosine 5'-O-(3-thio)triphosphate, the centrosomal NIMA-related kinase 7 (NEK7) and the adaptor protein ASC, which recruits caspase-1. In these NLRP3-NEK7-ASC complexes, the central NACHT domain of NLRP3 assumes an ATP-bound conformation in which two of its subdomains rotate by about 85° relative to the ADP-bound inactive conformation. The fish-specific NACHT-associated domain conserved in NLRP3 but absent in most NLRPs becomes ordered in its key regions to stabilize the active NACHT conformation and mediate most interactions in the disc. Mutations on these interactions compromise NLRP3-mediated caspase-1 activation. The N-terminal PYDs from all NLRP3 subunits combine to form a PYD filament that recruits ASC PYD to elicit downstream signalling. Surprisingly, the C-terminal LRR domain and the LRR-bound NEK7 do not participate in disc interfaces. Together with previous structures of an inactive NLRP3 cage in which LRR-LRR interactions play an important role, we propose that the role of NEK7 is to break the inactive cage to transform NLRP3 into the active NLRP3 inflammasome disc. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_28560.map.gz | 28.8 MB | EMDB map data format | |
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Header (meta data) | emd-28560-v30.xml emd-28560.xml | 12.6 KB 12.6 KB | Display Display | EMDB header |
Images | emd_28560.png | 102.7 KB | ||
Filedesc metadata | emd-28560.cif.gz | 4.8 KB | ||
Others | emd_28560_half_map_1.map.gz emd_28560_half_map_2.map.gz | 28.3 MB 28.3 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-28560 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-28560 | HTTPS FTP |
-Validation report
Summary document | emd_28560_validation.pdf.gz | 1 MB | Display | EMDB validaton report |
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Full document | emd_28560_full_validation.pdf.gz | 1 MB | Display | |
Data in XML | emd_28560_validation.xml.gz | 10.8 KB | Display | |
Data in CIF | emd_28560_validation.cif.gz | 12.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-28560 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-28560 | HTTPS FTP |
-Related structure data
Related structure data | 8ertMC 8ej4C M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_28560.map.gz / Format: CCP4 / Size: 30.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #1
File | emd_28560_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_28560_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
-Entire : a complex of NLRP3 and NEK7
Entire | Name: a complex of NLRP3 and NEK7 |
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Components |
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-Supramolecule #1: a complex of NLRP3 and NEK7
Supramolecule | Name: a complex of NLRP3 and NEK7 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: Homo sapiens (human) |
-Macromolecule #1: NACHT, LRR and PYD domains-containing protein 3
Macromolecule | Name: NACHT, LRR and PYD domains-containing protein 3 / type: protein_or_peptide / ID: 1 / Number of copies: 21 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 11.14694 KDa |
Recombinant expression | Organism: Homo sapiens (human) |
Sequence | String: MKMASTRCKL ARYLEDLEDV DLKKFKMHLE DYPPQKGCIP LPRGQTEKAD HVDLATLMID FNGEEKAWAM AVWIFAAINR RDLYEKAKR DEPKWG UniProtKB: NACHT, LRR and PYD domains-containing protein 3 |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 8 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: NONE |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 33227 |
Initial angle assignment | Type: COMMON LINE |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |