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Open data
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Basic information
| Entry | Database: PDB / ID: 9swq | |||||||||||||||||||||||||||
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| Title | Stimulator of interferon genes protein mutant - I165H | |||||||||||||||||||||||||||
Components | Stimulator of interferon genes protein | |||||||||||||||||||||||||||
Keywords | IMMUNE SYSTEM / STING / Innate Immunity | |||||||||||||||||||||||||||
| Function / homology | Function and homology informationSTING complex / STAT6-mediated induction of chemokines / serine/threonine protein kinase complex / protein localization to endoplasmic reticulum / 2',3'-cyclic GMP-AMP binding / cyclic-di-GMP binding / STING mediated induction of host immune responses / positive regulation of type I interferon-mediated signaling pathway / IRF3-mediated induction of type I IFN / proton channel activity ...STING complex / STAT6-mediated induction of chemokines / serine/threonine protein kinase complex / protein localization to endoplasmic reticulum / 2',3'-cyclic GMP-AMP binding / cyclic-di-GMP binding / STING mediated induction of host immune responses / positive regulation of type I interferon-mediated signaling pathway / IRF3-mediated induction of type I IFN / proton channel activity / reticulophagy / cGAS/STING signaling pathway / pattern recognition receptor signaling pathway / cellular response to exogenous dsRNA / cytoplasmic pattern recognition receptor signaling pathway / protein complex oligomerization / autophagosome membrane / positive regulation of macroautophagy / autophagosome assembly / cellular response to interferon-beta / positive regulation of defense response to virus by host / positive regulation of type I interferon production / endoplasmic reticulum-Golgi intermediate compartment membrane / activation of innate immune response / signaling adaptor activity / positive regulation of interferon-beta production / autophagosome / cytoplasmic vesicle membrane / secretory granule membrane / antiviral innate immune response / Regulation of innate immune responses to cytosolic DNA / protein serine/threonine kinase binding / SARS-CoV-1 activates/modulates innate immune responses / peroxisome / regulation of inflammatory response / defense response to virus / RNA polymerase II-specific DNA-binding transcription factor binding / transcription coactivator activity / mitochondrial outer membrane / endosome / cilium / ciliary basal body / Golgi membrane / innate immune response / Neutrophil degranulation / ubiquitin protein ligase binding / protein kinase binding / endoplasmic reticulum membrane / perinuclear region of cytoplasm / SARS-CoV-2 activates/modulates innate and adaptive immune responses / protein homodimerization activity / positive regulation of transcription by RNA polymerase II / nucleoplasm / identical protein binding / plasma membrane / cytosol Similarity search - Function | |||||||||||||||||||||||||||
| Biological species | Homo sapiens (human) | |||||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.31 Å | |||||||||||||||||||||||||||
Authors | Xu, P. / Zhang, B. / Meng, Y. / Ablasser, A. | |||||||||||||||||||||||||||
| Funding support | 1items
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Citation | Journal: Nature / Year: 2026Title: The mutational landscape of STING-induced immunity. Authors: Bing Zhang / Pengbiao Xu / Yu Meng / Laure Gallay / François Lestelle / Hélène Morel / Marie-Louise Frémond / Bruno E Correia / Andrea Ablasser / ![]() Abstract: Stimulator of interferon genes (STING) is an evolutionary conserved immune signalling protein with key roles in host defence, cancer, senescence and inflammation. Downstream of STING, type I ...Stimulator of interferon genes (STING) is an evolutionary conserved immune signalling protein with key roles in host defence, cancer, senescence and inflammation. Downstream of STING, type I interferon, inflammatory cytokine signalling and non-canonical autophagy are governed by a multilayered mechanism integrating ligand-induced structural transitions, protein-protein interactions and coordinated intracellular trafficking. Despite its central role in immunity and relevance as therapeutic target, the sequence elements that govern STING (in)activation in cells remain incompletely understood. Here we developed a massively parallel assay to systematically chart the sequence-function landscape of STING. Profiling thousands of single amino-acid variants, we identified structural and functional determinants that shape the immunostimulatory capacity of STING and its ability to translate ligand recognition into distinct signalling outputs. Cryogenic-electron microscopy structures of select STING hyperactive variants revealed new regulatory principles dictating conformational transition from inactive to signalling-competent states of STING. Mutational effects are widespread across the functional landscape and can sensitize STING towards the natural ligand 2'3'-cGAMP or decouple interferon induction from non-canonical autophagy, demonstrating a diversity of possible responses that can be accessed through single point substitutions. Finally, our data showed the clinical and evolutionary relevance of naturally occurring STING protein variants. Collectively, these findings define molecular principles that tune STING activity and chart the landscape of its functional potential across immune contexts. | |||||||||||||||||||||||||||
| History |
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9swq.cif.gz | 133.5 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb9swq.ent.gz | 103 KB | Display | PDB format |
| PDBx/mmJSON format | 9swq.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/sw/9swq ftp://data.pdbj.org/pub/pdb/validation_reports/sw/9swq | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 55324MC ![]() 9swmC ![]() 9swrC ![]() 9swsC C: citing same article ( M: map data used to model this data |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
| #1: Protein | Mass: 42261.461 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: STING1, ERIS, MITA, STING, TMEM173 / Production host: Homo sapiens (human) / References: UniProt: Q86WV6Has protein modification | N | |
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-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: STING mutant - I165H / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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| Molecular weight | Value: 0.1 MDa / Experimental value: NO |
| Source (natural) | Organism: Homo sapiens (human) |
| Source (recombinant) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.4 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: TFS KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3200 nm / Nominal defocus min: 600 nm |
| Image recording | Electron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.31 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 535604 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refinement | Highest resolution: 3.31 Å Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
| Refine LS restraints |
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Homo sapiens (human)
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FIELD EMISSION GUN