+Open data
-Basic information
Entry | Database: PDB / ID: 5yud | |||||||||||||||||||||
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Title | Flagellin derivative in complex with the NLR protein NAIP5 | |||||||||||||||||||||
Components |
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Keywords | IMMUNE SYSTEM / Flagellin / NAIP5 / NLRC4 / Cryo-EM | |||||||||||||||||||||
Function / homology | Function and homology information TLR5 cascade / MyD88 cascade initiated on plasma membrane / NFkB and MAPK activation mediated by TRAF6 / IPAF inflammasome complex / The IPAF inflammasome / bacterial-type flagellum / pyroptotic inflammatory response / cysteine-type endopeptidase inhibitor activity involved in apoptotic process / detection of bacterium / positive regulation of interleukin-1 beta production ...TLR5 cascade / MyD88 cascade initiated on plasma membrane / NFkB and MAPK activation mediated by TRAF6 / IPAF inflammasome complex / The IPAF inflammasome / bacterial-type flagellum / pyroptotic inflammatory response / cysteine-type endopeptidase inhibitor activity involved in apoptotic process / detection of bacterium / positive regulation of interleukin-1 beta production / perikaryon / defense response to Gram-negative bacterium / receptor ligand activity / defense response to bacterium / inflammatory response / symbiont entry into host cell / innate immune response / neuronal cell body / negative regulation of apoptotic process / apoptotic process / structural molecule activity / extracellular space / extracellular region / ATP binding / metal ion binding Similarity search - Function | |||||||||||||||||||||
Biological species | Mus musculus (house mouse) Salmonella typhimurium (bacteria) | |||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.28 Å | |||||||||||||||||||||
Authors | Yang, X.R. / Yang, F. / Wang, W.G. / Lin, G.Z. | |||||||||||||||||||||
Funding support | China, 6items
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Citation | Journal: Cell Res / Year: 2018 Title: Structural basis for specific flagellin recognition by the NLR protein NAIP5. Authors: Xinru Yang / Fan Yang / Weiguang Wang / Guangzhong Lin / Zehan Hu / Zhifu Han / Yijun Qi / Liman Zhang / Jiawei Wang / Sen-Fang Sui / Jijie Chai / Abstract: The nucleotide-binding domain- and leucine-rich repeat (LRR)-containing proteins (NLRs) function as intracellular immune receptors to detect the presence of pathogen- or host-derived signals. The ...The nucleotide-binding domain- and leucine-rich repeat (LRR)-containing proteins (NLRs) function as intracellular immune receptors to detect the presence of pathogen- or host-derived signals. The mechanisms of how NLRs sense their ligands remain elusive. Here we report the structure of a bacterial flagellin derivative in complex with the NLR proteins NAIP5 and NLRC4 determined by cryo-electron microscopy at 4.28 Å resolution. The structure revealed that the flagellin derivative forms two parallel helices interacting with multiple domains including BIR1 and LRR of NAIP5. Binding to NAIP5 results in a nearly complete burial of the flagellin derivative, thus stabilizing the active conformation of NAIP5. The extreme C-terminal side of the flagellin is anchored to a sterically constrained binding pocket of NAIP5, which likely acts as a structural determinant for discrimination of different bacterial flagellins by NAIP5, a notion further supported by biochemical data. Taken together, our results shed light on the molecular mechanisms underlying NLR ligand perception. | |||||||||||||||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 5yud.cif.gz | 254.8 KB | Display | PDBx/mmCIF format |
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PDB format | pdb5yud.ent.gz | 198.9 KB | Display | PDB format |
PDBx/mmJSON format | 5yud.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 5yud_validation.pdf.gz | 994.7 KB | Display | wwPDB validaton report |
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Full document | 5yud_full_validation.pdf.gz | 1.1 MB | Display | |
Data in XML | 5yud_validation.xml.gz | 56.9 KB | Display | |
Data in CIF | 5yud_validation.cif.gz | 83.9 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/yu/5yud ftp://data.pdbj.org/pub/pdb/validation_reports/yu/5yud | HTTPS FTP |
-Related structure data
Related structure data | 6845MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 160018.047 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mus musculus (house mouse) / Gene: Naip5, Birc1e / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q8CGT2, UniProt: Q9R016*PLUS |
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#2: Protein | Mass: 7665.362 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720) (bacteria) Strain: LT2 / SGSC1412 / ATCC 700720 / Gene: fljB, H2, STM2771, fliC, flaF, hag, STM1959 / Production host: Escherichia coli K-12 (bacteria) / Strain (production host): K-12 / References: UniProt: P52616, UniProt: P06179 |
#3: Chemical | ChemComp-ATP / |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
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Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 8 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 50 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.10.1_2155: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 4.28 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 626608 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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