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- EMDB-35292: Structure of C5a bound human C5aR1 in complex with Go (Composite map) -
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Open data
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Basic information
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Title | Structure of C5a bound human C5aR1 in complex with Go (Composite map) | |||||||||||||||
![]() | Full map | |||||||||||||||
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![]() | GPCR / G protein / SIGNALING PROTEIN-IMMUNE SYSTEM complex | |||||||||||||||
Function / homology | ![]() complement component C5a signaling pathway / presynapse organization / complement component C5a receptor activity / Terminal pathway of complement / response to peptidoglycan / membrane attack complex / sensory perception of chemical stimulus / Activation of C3 and C5 / negative regulation of macrophage chemotaxis / mu-type opioid receptor binding ...complement component C5a signaling pathway / presynapse organization / complement component C5a receptor activity / Terminal pathway of complement / response to peptidoglycan / membrane attack complex / sensory perception of chemical stimulus / Activation of C3 and C5 / negative regulation of macrophage chemotaxis / mu-type opioid receptor binding / corticotropin-releasing hormone receptor 1 binding / complement receptor mediated signaling pathway / complement activation, alternative pathway / vesicle docking involved in exocytosis / positive regulation of neutrophil chemotaxis / chemokine activity / endopeptidase inhibitor activity / G protein-coupled dopamine receptor signaling pathway / regulation of heart contraction / parallel fiber to Purkinje cell synapse / positive regulation of macrophage chemotaxis / amyloid-beta clearance / positive regulation of vascular endothelial growth factor production / complement activation, classical pathway / cellular defense response / postsynaptic modulation of chemical synaptic transmission / positive regulation of chemokine production / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / neutrophil chemotaxis / astrocyte activation / muscle contraction / Peptide ligand-binding receptors / secretory granule membrane / Regulation of Complement cascade / positive regulation of epithelial cell proliferation / locomotory behavior / mRNA transcription by RNA polymerase II / microglial cell activation / negative regulation of insulin secretion / G protein-coupled receptor activity / GABA-ergic synapse / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / cognition / 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 / positive regulation of angiogenesis / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / chemotaxis / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / apical part of cell / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADP signalling through P2Y purinoceptor 1 / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / retina development in camera-type eye / G protein activity / cell body / positive regulation of cytosolic calcium ion concentration / presynaptic membrane / GTPase binding / Ca2+ pathway / fibroblast proliferation / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / basolateral plasma membrane / phospholipase C-activating G protein-coupled receptor signaling pathway Similarity search - Function | |||||||||||||||
Biological species | ![]() ![]() ![]() | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.21 Å | |||||||||||||||
![]() | Yadav MK / Yadav R / Maharana J / Banerjee R / Shukla AK / Gati C | |||||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() 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
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 166.9 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 26.4 KB 26.4 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 11.9 KB | Display | ![]() |
Images | ![]() | 37 KB | ||
Filedesc metadata | ![]() | 7.2 KB | ||
Others | ![]() ![]() | 164.2 MB 164.2 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 817.9 KB | Display | ![]() |
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Full document | ![]() | 817.5 KB | Display | |
Data in XML | ![]() | 20.4 KB | Display | |
Data in CIF | ![]() | 26.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8ia2MC ![]() 8hptC ![]() 8hqcC ![]() 8i95C ![]() 8i97C ![]() 8i9aC ![]() 8i9lC ![]() 8i9sC ![]() 8j6dC ![]() 8jzzC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | Full map | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.0631 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: Half map B
File | emd_35292_half_map_1.map | ||||||||||||
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Annotation | Half map B | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map A
File | emd_35292_half_map_2.map | ||||||||||||
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Annotation | Half map A | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
+Entire : C5a bound human C5aR1 in complex with Go
+Supramolecule #1: C5a bound human C5aR1 in complex with Go
+Supramolecule #2: C5a anaphylatoxin chemotactic receptor 1
+Supramolecule #3: C5a anaphylatoxin
+Supramolecule #4: Guanine nucleotide-binding protein G(o) subunit alpha
+Supramolecule #5: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
+Supramolecule #6: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
+Supramolecule #7: Antibody fragment - ScFv16
+Macromolecule #1: C5a anaphylatoxin chemotactic receptor 1
+Macromolecule #2: C5a anaphylatoxin
+Macromolecule #3: Guanine nucleotide-binding protein G(o) subunit alpha
+Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
+Macromolecule #5: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
+Macromolecule #6: Antibody fragment - ScFv16
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | TFS GLACIOS |
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Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Detector mode: COUNTING / Number real images: 10151 / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 200 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.0 µm / Nominal defocus min: 0.8 µm |