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Open data
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Basic information
| Entry | Database: PDB / ID: 8hk5 | ||||||
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| Title | C5aR1-Gi-C5a protein complex | ||||||
Components |
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Keywords | MEMBRANE PROTEIN / GPCR / C5aR1 / C5a / complement | ||||||
| Function / homology | Function and homology informationpresynapse organization / complement component C5a signaling pathway / Terminal pathway of complement / membrane attack complex / complement component C5a receptor activity / response to peptidoglycan / Activation of C3 and C5 / complement activation, GZMK pathway / negative regulation of macrophage chemotaxis / sensory perception of chemical stimulus ...presynapse organization / complement component C5a signaling pathway / Terminal pathway of complement / membrane attack complex / complement component C5a receptor activity / response to peptidoglycan / Activation of C3 and C5 / complement activation, GZMK pathway / negative regulation of macrophage chemotaxis / sensory perception of chemical stimulus / other organism cell membrane / G-protein activation / Activation of the phototransduction cascade / Glucagon-type ligand receptors / Thromboxane signalling through TP receptor / Sensory perception of sweet, bitter, and umami (glutamate) taste / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / complement receptor mediated signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Ca2+ pathway / G alpha (z) signalling events / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / complement activation, alternative pathway / Vasopressin regulates renal water homeostasis via Aquaporins / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (q) signalling events / positive regulation of neutrophil chemotaxis / chemokine activity / G alpha (i) signalling events / Thrombin signalling through proteinase activated receptors (PARs) / photoreceptor outer segment membrane / spectrin binding / endopeptidase inhibitor activity / positive regulation of macrophage chemotaxis / alkylglycerophosphoethanolamine phosphodiesterase activity / amyloid-beta clearance / complement activation, classical pathway / positive regulation of vascular endothelial growth factor production / photoreceptor outer segment / cellular defense response / positive regulation of chemokine production / cardiac muscle cell apoptotic process / neutrophil chemotaxis / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / photoreceptor inner segment / 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 / astrocyte activation / Regulation of Complement cascade / secretory granule membrane / cellular response to forskolin / positive regulation of epithelial cell proliferation / Peptide ligand-binding receptors / regulation of mitotic spindle organization / chemokine-mediated signaling pathway / Regulation of insulin secretion / neuropeptide signaling pathway / response to prostaglandin E / microglial cell activation / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / mRNA transcription by RNA polymerase II / G protein-coupled receptor binding / response to peptide hormone / cognition / G protein-coupled receptor activity / chemotaxis / centriolar satellite / G-protein beta/gamma-subunit complex binding / positive regulation of angiogenesis / apical part of cell / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / ADP signalling through P2Y purinoceptor 12 / GDP binding / Adrenaline,noradrenaline inhibits insulin secretion / G alpha (z) signalling events / ADORA2B mediated anti-inflammatory cytokines production / GPER1 signaling / heterotrimeric G-protein complex / G-protein beta-subunit binding / sensory perception of taste / sperm principal piece / adenylate cyclase-activating G protein-coupled receptor signaling pathway / signaling receptor complex adaptor activity / positive regulation of cytosolic calcium ion concentration / retina development in camera-type eye / cell body / GTPase binding / G protein activity Similarity search - Function | ||||||
| Biological species | Homo sapiens (human)![]() ![]() | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | ||||||
Authors | Wang, Y. / Liu, W. / Xu, Y. / Zhuang, Y. / Xu, H.E. | ||||||
| Funding support | China, 1items
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Citation | Journal: Nat Chem Biol / Year: 2023Title: Revealing the signaling of complement receptors C3aR and C5aR1 by anaphylatoxins. Authors: Yue Wang / Weiyi Liu / Youwei Xu / Xinheng He / Qingning Yuan / Ping Luo / Wenjia Fan / Jingpeng Zhu / Xinyue Zhang / Xi Cheng / Yi Jiang / H Eric Xu / Youwen Zhuang / ![]() Abstract: The complement receptors C3aR and C5aR1, whose signaling is selectively activated by anaphylatoxins C3a and C5a, are important regulators of both innate and adaptive immune responses. Dysregulations ...The complement receptors C3aR and C5aR1, whose signaling is selectively activated by anaphylatoxins C3a and C5a, are important regulators of both innate and adaptive immune responses. Dysregulations of C3aR and C5aR1 signaling lead to multiple inflammatory disorders, including sepsis, asthma and acute respiratory distress syndrome. The mechanism underlying endogenous anaphylatoxin recognition and activation of C3aR and C5aR1 remains elusive. Here we reported the structures of C3a-bound C3aR and C5a-bound C5aR1 as well as an apo-C3aR structure. These structures, combined with mutagenesis analysis, reveal a conserved recognition pattern of anaphylatoxins to the complement receptors that is different from chemokine receptors, unique pocket topologies of C3aR and C5aR1 that mediate ligand selectivity, and a common mechanism of receptor activation. These results provide crucial insights into the molecular understanding of C3aR and C5aR1 signaling and structural templates for rational drug design for treating inflammation disorders. | ||||||
| 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 | 8hk5.cif.gz | 185.6 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8hk5.ent.gz | 141.6 KB | Display | PDB format |
| PDBx/mmJSON format | 8hk5.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/hk/8hk5 ftp://data.pdbj.org/pub/pdb/validation_reports/hk/8hk5 | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 34846MC ![]() 8hk2C ![]() 8hk3C 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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| 1 |
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Components
-Protein , 2 types, 2 molecules AB
| #1: Protein | Mass: 39372.375 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: C5AR1 / Production host: ![]() |
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| #2: Protein | Mass: 8288.676 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: C5 / Production host: ![]() |
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules CDG
| #3: Protein | Mass: 40313.863 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNAI1 / Production host: ![]() |
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| #4: Protein | Mass: 37915.496 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
| #5: Protein | Mass: 7432.554 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Non-polymers , 1 types, 2 molecules 
| #6: Chemical |
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-Details
| Has ligand of interest | N |
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| Has protein modification | Y |
-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: C5aR1-Gi-C5a protein complex / Type: COMPLEX / Entity ID: #1-#5 / Source: MULTIPLE SOURCES |
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| Molecular weight | Value: 0.16 MDa / Experimental value: NO |
| Source (natural) | Organism: Homo sapiens (human) |
| Source (recombinant) | Organism: ![]() |
| Buffer solution | pH: 7.2 |
| 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: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 5000 nm / Nominal defocus min: 1200 nm |
| Image recording | Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
| CTF correction | Type: NONE |
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| Particle selection | Num. of particles selected: 4236350 |
| 3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 406559 / Symmetry type: POINT |
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About Yorodumi




Homo sapiens (human)

China, 1items
Citation




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gel filtration

