+Open data
-Basic information
Entry | Database: PDB / ID: 8i9a | |||||||||||||||
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Title | Structure of EP54-C3aR-Gq complex | |||||||||||||||
Components |
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Keywords | SIGNALING PROTEIN/IMMUNE SYSTEM / GPCR / G protein / SIGNALING PROTEIN-IMMUNE SYSTEM complex | |||||||||||||||
Function / homology | Function and homology information complement component C3a receptor activity / complement component C5a receptor activity / complement receptor mediated signaling pathway / positive regulation of neutrophil chemotaxis / blood circulation / azurophil granule membrane / positive regulation of macrophage chemotaxis / positive regulation of vascular endothelial growth factor production / Purinergic signaling in leishmaniasis infection / specific granule membrane ...complement component C3a receptor activity / complement component C5a receptor activity / complement receptor mediated signaling pathway / positive regulation of neutrophil chemotaxis / blood circulation / azurophil granule membrane / positive regulation of macrophage chemotaxis / positive regulation of vascular endothelial growth factor production / Purinergic signaling in leishmaniasis infection / specific granule membrane / Peptide ligand-binding receptors / Regulation of Complement cascade / G protein-coupled receptor activity / calcium-mediated signaling / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / positive regulation of angiogenesis / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / chemotaxis / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / positive regulation of cytosolic calcium ion concentration / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / inflammatory response / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / Neutrophil degranulation / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytoplasm / cytosol Similarity search - Function | |||||||||||||||
Biological species | Homo sapiens (human) Mus musculus (house mouse) | |||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.57 Å | |||||||||||||||
Authors | Yadav, M.K. / Yadav, R. / Maharana, J. / Sarma, P. / Banerjee, R. / Shukla, A.K. / Gati, C. | |||||||||||||||
Funding support | India, United Kingdom, 4items
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Citation | Journal: Cell / Year: 2023 Title: Molecular basis of anaphylatoxin binding, activation, and signaling bias at complement receptors. Authors: Manish K Yadav / Jagannath Maharana / Ravi Yadav / Shirsha Saha / Parishmita Sarma / Chahat Soni / Vinay Singh / Sayantan Saha / Manisankar Ganguly / Xaria X Li / Samanwita Mohapatra / Sudha ...Authors: Manish K Yadav / Jagannath Maharana / Ravi Yadav / Shirsha Saha / Parishmita Sarma / Chahat Soni / Vinay Singh / Sayantan Saha / Manisankar Ganguly / Xaria X Li / Samanwita Mohapatra / Sudha Mishra / Htet A Khant / Mohamed Chami / Trent M Woodruff / Ramanuj Banerjee / Arun K Shukla / Cornelius Gati / Abstract: The complement system is a critical part of our innate immune response, and the terminal products of this cascade, anaphylatoxins C3a and C5a, exert their physiological and pathophysiological ...The complement system is a critical part of our innate immune response, and the terminal products of this cascade, anaphylatoxins C3a and C5a, exert their physiological and pathophysiological responses primarily via two GPCRs, C3aR and C5aR1. However, the molecular mechanism of ligand recognition, activation, and signaling bias of these receptors remains mostly elusive. Here, we present nine cryo-EM structures of C3aR and C5aR1 activated by their natural and synthetic agonists, which reveal distinct binding pocket topologies of complement anaphylatoxins and provide key insights into receptor activation and transducer coupling. We also uncover the structural basis of a naturally occurring mechanism to dampen the inflammatory response of C5a via proteolytic cleavage of the terminal arginine and the G-protein signaling bias elicited by a peptide agonist of C3aR identified here. In summary, our study elucidates the innerworkings of the complement anaphylatoxin receptors and should facilitate structure-guided drug discovery to target these receptors in a spectrum of disorders. | |||||||||||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8i9a.cif.gz | 214.6 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8i9a.ent.gz | 159.2 KB | Display | PDB format |
PDBx/mmJSON format | 8i9a.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8i9a_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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Full document | 8i9a_full_validation.pdf.gz | 1.3 MB | Display | |
Data in XML | 8i9a_validation.xml.gz | 47.9 KB | Display | |
Data in CIF | 8i9a_validation.cif.gz | 70.9 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/i9/8i9a ftp://data.pdbj.org/pub/pdb/validation_reports/i9/8i9a | HTTPS FTP |
-Related structure data
Related structure data | 35263MC 8hptC 8hqcC 8i95C 8i97C 8i9lC 8i9sC 8ia2C 8j6dC 8jzzC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABG
#1: Protein | Mass: 43405.168 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) |
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#2: Protein | Mass: 38534.062 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P62873 |
#3: 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: Spodoptera frugiperda (fall armyworm) / References: UniProt: P59768 |
-Antibody / Protein / Protein/peptide , 3 types, 3 molecules HCD
#4: Antibody | Mass: 26466.486 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mus musculus (house mouse) / Production host: Escherichia coli (E. coli) |
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#5: Protein | Mass: 59808.422 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: C3AR1, AZ3B, C3R1, HNFAG09 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q16581 |
#6: Protein/peptide | Mass: 1211.475 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: Chemically synthesized / Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) |
-Details
Has ligand of interest | 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 |
-Sample preparation
Component |
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Molecular weight | Experimental value: NO | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 7.4 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Microscopy | Model: TFS GLACIOS |
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Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 800 nm |
Image recording | Electron dose: 50 e/Å2 / Detector mode: COUNTING / Film or detector model: FEI FALCON IV (4k x 4k) / Num. of real images: 4445 |
Image scans | Movie frames/image: 40 |
-Processing
Software | Name: PHENIX / Version: 1.20.1_4487: / Classification: refinement | ||||||||||||||||||||||||
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EM software |
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CTF correction | Type: NONE | ||||||||||||||||||||||||
Particle selection | Num. of particles selected: 2007547 | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.57 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 101400 / Symmetry type: POINT | ||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL | ||||||||||||||||||||||||
Atomic model building | PDB-ID: 8I95 Accession code: 8I95 / Source name: PDB / Type: experimental model | ||||||||||||||||||||||||
Refine LS restraints |
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