[English] 日本語
![](img/lk-miru.gif)
- PDB-6nt9: Cryo-EM structure of the complex between human TBK1 and chicken STING -
+
Open data
-
Basic information
Entry | Database: PDB / ID: 6nt9 | |||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of the complex between human TBK1 and chicken STING | |||||||||||||||||||||
![]() |
| |||||||||||||||||||||
![]() | IMMUNE SYSTEM / ER / kinase / adaptor | |||||||||||||||||||||
Function / homology | ![]() STING mediated induction of host immune responses / IRF3 mediated activation of type 1 IFN / STAT6-mediated induction of chemokines / positive regulation of xenophagy / serine/threonine protein kinase complex / proton channel activity / dendritic cell proliferation / regulation of type I interferon production / 2',3'-cyclic GMP-AMP binding / cyclic-di-GMP binding ...STING mediated induction of host immune responses / IRF3 mediated activation of type 1 IFN / STAT6-mediated induction of chemokines / positive regulation of xenophagy / serine/threonine protein kinase complex / proton channel activity / dendritic cell proliferation / regulation of type I interferon production / 2',3'-cyclic GMP-AMP binding / cyclic-di-GMP binding / IRF3-mediated induction of type I IFN / positive regulation of type I interferon-mediated signaling pathway / Interleukin-37 signaling / cGAS/STING signaling pathway / reticulophagy / TNFR1-induced proapoptotic signaling / toll-like receptor 4 signaling pathway / TRAF6 mediated IRF7 activation / cytoplasmic pattern recognition receptor signaling pathway / type I interferon-mediated signaling pathway / autophagosome membrane / antiviral innate immune response / positive regulation of macroautophagy / autophagosome assembly / autophagosome / positive regulation of type I interferon production / canonical NF-kappaB signal transduction / positive regulation of interferon-alpha production / positive regulation of autophagy / negative regulation of TORC1 signaling / TICAM1-dependent activation of IRF3/IRF7 / positive regulation of TORC1 signaling / Regulation of innate immune responses to cytosolic DNA / activation of innate immune response / positive regulation of interferon-beta production / endoplasmic reticulum-Golgi intermediate compartment membrane / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Neutrophil degranulation / Negative regulators of DDX58/IFIH1 signaling / phosphoprotein binding / Regulation of TNFR1 signaling / peptidyl-threonine phosphorylation / DDX58/IFIH1-mediated induction of interferon-alpha/beta / response to virus / SARS-CoV-1 activates/modulates innate immune responses / positive regulation of peptidyl-serine phosphorylation / protein complex oligomerization / TRAF3-dependent IRF activation pathway / cytoplasmic vesicle / peptidyl-serine phosphorylation / protein phosphatase binding / positive regulation of canonical NF-kappaB signal transduction / defense response to virus / Potential therapeutics for SARS / nucleic acid binding / non-specific serine/threonine protein kinase / defense response to Gram-positive bacterium / protein kinase activity / inflammatory response / Golgi membrane / negative regulation of gene expression / protein phosphorylation / intracellular membrane-bounded organelle / innate immune response / protein serine kinase activity / protein serine/threonine kinase activity / endoplasmic reticulum membrane / SARS-CoV-2 activates/modulates innate and adaptive immune responses / perinuclear region of cytoplasm / protein homodimerization activity / positive regulation of transcription by RNA polymerase II / nucleoplasm / ATP binding / identical protein binding / cytoplasm / cytosol Similarity search - Function | |||||||||||||||||||||
Biological species | ![]() ![]() ![]() | |||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||||||||||||||
![]() | Shang, G. / Zhang, C. / Chen, Z.J. / Bai, X. / Zhang, X. | |||||||||||||||||||||
Funding support | ![]()
| |||||||||||||||||||||
![]() | ![]() Title: Structural basis of STING binding with and phosphorylation by TBK1. Authors: Conggang Zhang / Guijun Shang / Xiang Gui / Xuewu Zhang / Xiao-Chen Bai / Zhijian J Chen / ![]() Abstract: The invasion of mammalian cytoplasm by microbial DNA from infectious pathogens or by self DNA from the nucleus or mitochondria represents a danger signal that alerts the host immune system. Cyclic ...The invasion of mammalian cytoplasm by microbial DNA from infectious pathogens or by self DNA from the nucleus or mitochondria represents a danger signal that alerts the host immune system. Cyclic GMP-AMP synthase (cGAS) is a sensor of cytoplasmic DNA that activates the type-I interferon pathway. On binding to DNA, cGAS is activated to catalyse the synthesis of cyclic GMP-AMP (cGAMP) from GTP and ATP. cGAMP functions as a second messenger that binds to and activates stimulator of interferon genes (STING). STING then recruits and activates tank-binding kinase 1 (TBK1), which phosphorylates STING and the transcription factor IRF3 to induce type-I interferons and other cytokines. However, how cGAMP-bound STING activates TBK1 and IRF3 is not understood. Here we present the cryo-electron microscopy structure of human TBK1 in complex with cGAMP-bound, full-length chicken STING. The structure reveals that the C-terminal tail of STING adopts a β-strand-like conformation and inserts into a groove between the kinase domain of one TBK1 subunit and the scaffold and dimerization domain of the second subunit in the TBK1 dimer. In this binding mode, the phosphorylation site Ser366 in the STING tail cannot reach the kinase-domain active site of bound TBK1, which suggests that STING phosphorylation by TBK1 requires the oligomerization of both proteins. Mutational analyses validate the interaction mode between TBK1 and STING and support a model in which high-order oligomerization of STING and TBK1, induced by cGAMP, leads to STING phosphorylation by TBK1. | |||||||||||||||||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | Molecule: ![]() ![]() |
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 244.8 KB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 184.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 704.2 KB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 705.5 KB | Display | |
Data in XML | ![]() | 38.1 KB | Display | |
Data in CIF | ![]() | 59.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 0506MC M: map data used to model this data C: citing same article ( |
---|---|
Similar structure data |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
Components
#1: Protein | Mass: 85316.695 Da / Num. of mol.: 2 / Mutation: D135N Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: Q9UHD2, non-specific serine/threonine protein kinase #2: Protein | Mass: 44207.070 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component |
| ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Source (natural) |
| ||||||||||||||||||||||||
Source (recombinant) |
| ||||||||||||||||||||||||
Buffer solution | pH: 8 | ||||||||||||||||||||||||
Specimen | Conc.: 4.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Specimen support | Details: unspecified | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 48 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
EM imaging optics | Energyfilter name: GIF Quantum LS / Energyfilter slit width: 20 eV |
Image scans | Movie frames/image: 30 |
-
Processing
EM software |
| ||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C2 (2 fold cyclic) | ||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 86276 / Symmetry type: POINT | ||||||||||||||||||||||||||||||
Atomic model building | Protocol: AB INITIO MODEL / Space: REAL | ||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 4IM0 Accession code: 4IM0 / Source name: PDB / Type: experimental model |