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Open data
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Basic information
| Entry | Database: PDB / ID: 9p0m | |||||||||||||||
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| Title | Composite map of CXCL11-CXCR3-Gi-scFv16 | |||||||||||||||
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Keywords | MEMBRANE PROTEIN / GPCR / chemokine receptor / IMMUNE SYSTEM | |||||||||||||||
| Function / homology | Function and homology informationCXCR3 chemokine receptor binding / regulation of leukocyte migration / chemokine binding / C-X-C chemokine binding / chemokine receptor activity / CXCR chemokine receptor binding / C-X-C chemokine receptor activity / positive regulation of chemotaxis / T cell chemotaxis / C-C chemokine receptor activity ...CXCR3 chemokine receptor binding / regulation of leukocyte migration / chemokine binding / C-X-C chemokine binding / chemokine receptor activity / CXCR chemokine receptor binding / C-X-C chemokine receptor activity / positive regulation of chemotaxis / T cell chemotaxis / C-C chemokine receptor activity / C-C chemokine binding / negative regulation of execution phase of apoptosis / chemokine activity / Chemokine receptors bind chemokines / negative regulation of endothelial cell proliferation / positive regulation of execution phase of apoptosis / regulation of cell adhesion / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration / positive regulation of relaxation of smooth muscle / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / G protein-coupled serotonin receptor binding / negative regulation of angiogenesis / cellular response to forskolin / bioluminescence / positive regulation of release of sequestered calcium ion into cytosol / regulation of mitotic spindle organization / chemokine-mediated signaling pathway / cell chemotaxis / generation of precursor metabolites and energy / Regulation of insulin secretion / calcium-mediated signaling / neuropeptide signaling pathway / response to prostaglandin E / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / chemotaxis / centriolar satellite / G-protein beta/gamma-subunit complex binding / positive regulation of angiogenesis / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / G beta:gamma signalling through BTK / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / GDP binding / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / cell-cell signaling / regulation of cell population proliferation / adenylate cyclase-activating dopamine receptor signaling pathway / heparin binding / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G alpha (12/13) signalling events / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / sensory perception of taste / Thrombin signalling through proteinase activated receptors (PARs) / sperm principal piece / adenylate cyclase-activating G protein-coupled receptor signaling pathway / signaling receptor complex adaptor activity / positive regulation of cytosolic calcium ion concentration / signaling receptor activity / retina development in camera-type eye / GTPase binding / fibroblast proliferation / G protein activity / angiogenesis / midbody / Ca2+ pathway Similarity search - Function | |||||||||||||||
| Biological species | Homo sapiens (human)![]() | |||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.95 Å | |||||||||||||||
Authors | Sun, D. / Masureel, M. / Johnson, M. | |||||||||||||||
| Funding support | 1items
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Citation | Journal: Sci Adv / Year: 2026Title: Molecular basis of CXC chemokine receptor 3 ligand multispecificity. Authors: Alexandre Bouyssou / Dawei Sun / Tricia Zhou / Shannon Smith / Hoangdung Ho / Matthew Johnson / Caleigh Azumaya / Sigrid Noreng / Peter Liu / Shu Ti / Prajakta Joshi / Christine Tam / Ying ...Authors: Alexandre Bouyssou / Dawei Sun / Tricia Zhou / Shannon Smith / Hoangdung Ho / Matthew Johnson / Caleigh Azumaya / Sigrid Noreng / Peter Liu / Shu Ti / Prajakta Joshi / Christine Tam / Ying Yang / Eric Janezic / Laëtitia Comps-Agrar / Matthieu Masureel / ![]() Abstract: C-X-C motif chemokine receptor 3 (CXCR3) is essential for immune cell functions and pivotal in T helper 1 cell infiltration in autoimmune and chronic inflammatory diseases and in tumor proliferation ...C-X-C motif chemokine receptor 3 (CXCR3) is essential for immune cell functions and pivotal in T helper 1 cell infiltration in autoimmune and chronic inflammatory diseases and in tumor proliferation and metastasis, but the mechanisms by which the endogenous ligands CXCL9, CXCL10, and CXCL11 differentially recognize and activate CXCR3 are not fully understood. Here, we present cryo-electron microscopy structures of all three chemokine-CXCR3-G complexes, complemented by cell binding studies and functional mutagenesis data. We systematically compare the pharmacological and interaction profiles of CXCL9, CXCL10, and CXCL11 to rationalize their varying efficacies and potencies and to reveal the critical role of the membrane-distal CXCR3 N terminus in ligand binding and signaling. Using chimeric chemokines and molecular dynamics, we reveal the signaling plasticity of chemokine ligands and signaling determinants. Together, these insights enable us to propose a multimodal binding and activation framework that explains CXCR3 chemokine ligand multispecificity and signaling versatility and offer tools to interrogate and modulate CXCR3 biology. | |||||||||||||||
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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 | 9p0m.cif.gz | 420.7 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb9p0m.ent.gz | 338 KB | Display | PDB format |
| PDBx/mmJSON format | 9p0m.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/p0/9p0m ftp://data.pdbj.org/pub/pdb/validation_reports/p0/9p0m | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 71081MC ![]() 9p0kC ![]() 9p0lC M: map data used to model this data C: citing same article ( |
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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
-Protein , 2 types, 2 molecules AB
| #1: Protein | Mass: 75792.680 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CXCR3, GPR9, EAH_00062270 / Production host: Homo sapiens (human) / References: UniProt: P49682, UniProt: U6GSR1 |
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| #2: Protein | Mass: 8324.064 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CXCL11, ITAC, SCYB11, SCYB9B / Production host: ![]() |
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules DEC
| #3: Protein | Mass: 39518.121 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: ![]() |
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| #4: Protein | Mass: 7861.143 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: ![]() |
| #5: Protein | Mass: 43182.078 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNAI1 / Production host: ![]() |
-Antibody , 1 types, 1 molecules F
| #6: Antibody | Mass: 28754.949 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Details
| Has protein modification | Y |
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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: CXCR3, CXCL11, Gi / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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| Source (natural) | Organism: Homo sapiens (human) |
| Source (recombinant) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.5 |
| 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: OTHER / Nominal defocus max: 1500 nm / Nominal defocus min: 500 nm |
| Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||
| 3D reconstruction | Resolution: 2.95 Å / Resolution method: FSC 0.5 CUT-OFF / Num. of particles: 104140 / Symmetry type: POINT |
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Homo sapiens (human)

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FIELD EMISSION GUN