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Yorodumi- PDB-7ykd: Cryo-EM structure of the human chemerin receptor 1 complex with t... -
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Basic information
| Entry | Database: PDB / ID: 7ykd | ||||||
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| Title | Cryo-EM structure of the human chemerin receptor 1 complex with the C-terminal nonapeptide of chemerin | ||||||
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Keywords | PEPTIDE BINDING PROTEIN / macrophages / inflammation | ||||||
| Function / homology | Function and homology informationregulation of chemokine activity / adipokinetic hormone binding / adipokinetic hormone receptor activity / platelet dense granule lumen / complement receptor activity / regulation of lipid catabolic process / antifungal innate immune response / chemokine receptor activity / negative regulation of interleukin-12 production / embryonic digestive tract development ...regulation of chemokine activity / adipokinetic hormone binding / adipokinetic hormone receptor activity / platelet dense granule lumen / complement receptor activity / regulation of lipid catabolic process / antifungal innate immune response / chemokine receptor activity / negative regulation of interleukin-12 production / embryonic digestive tract development / response to caloric restriction / antifungal humoral response / positive regulation of chemotaxis / Class A/1 (Rhodopsin-like receptors) / complement receptor mediated signaling pathway / positive regulation of macrophage chemotaxis / positive regulation of systemic arterial blood pressure / positive regulation of fat cell differentiation / skeletal system development / regulation of calcium-mediated signaling / regulation of eating behavior / adenylate cyclase inhibitor activity / retinoid metabolic process / T cell migration / positive regulation of protein localization to cell cortex / 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 / response to activity / cellular response to forskolin / regulation of mitotic spindle organization / mast cell degranulation / chemokine-mediated signaling pathway / neuropeptide signaling pathway / Regulation of insulin secretion / response to prostaglandin E / positive regulation of cholesterol biosynthetic process / positive regulation of protein phosphorylation / G protein-coupled receptor binding / response to peptide hormone / insulin receptor signaling pathway / chemotaxis / G protein-coupled receptor activity / G-protein beta/gamma-subunit complex binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / phospholipase C-activating 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 / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / GDP binding / G beta:gamma signalling through BTK / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / Platelet degranulation / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / 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 / G beta:gamma signalling through PI3Kgamma / ADORA2B mediated anti-inflammatory cytokines production / adenylate cyclase-activating dopamine receptor signaling pathway / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / positive regulation of cold-induced thermogenesis / regulation of inflammatory response / GPER1 signaling / heterotrimeric G-protein complex / Inactivation, recovery and regulation of the phototransduction cascade / G alpha (12/13) signalling events / G-protein beta-subunit binding / positive regulation of cytosolic calcium ion concentration / extracellular vesicle / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / adenylate cyclase-activating G protein-coupled receptor signaling pathway / signaling receptor activity / GTPase binding / G protein activity / midbody / extracellular matrix / Ca2+ pathway / cell cortex / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells Similarity search - Function | ||||||
| Biological species | Homo sapiens (human)![]() | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.81 Å | ||||||
Authors | Chen, G. / Liao, Q. / Ye, R.D. / Wang, J. | ||||||
| Funding support | 1items
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Citation | Journal: Proc Natl Acad Sci U S A / Year: 2023Title: Cryo-EM structure of the human chemerin receptor 1-Gi protein complex bound to the C-terminal nonapeptide of chemerin. Authors: Junlin Wang / Geng Chen / Qiwen Liao / Wenping Lyu / Aijun Liu / Lizhe Zhu / Yang Du / Richard D Ye / ![]() Abstract: Chemerin is a processed protein that acts on G protein-coupled receptors (GPCRs) for its chemotactic and adipokine activities. The biologically active chemerin (chemerin 21-157) results from ...Chemerin is a processed protein that acts on G protein-coupled receptors (GPCRs) for its chemotactic and adipokine activities. The biologically active chemerin (chemerin 21-157) results from proteolytic cleavage of prochemerin and uses its C-terminal peptide containing the sequence YFPGQFAFS for receptor activation. Here we report a high-resolution cryo-electron microscopy (cryo-EM) structure of human chemerin receptor 1 (CMKLR1) bound to the C-terminal nonapeptide of chemokine (C9) in complex with Gi proteins. C9 inserts its C terminus into the binding pocket and is stabilized through hydrophobic interactions involving its Y1, F2, F6, and F8, as well as polar interactions between G4, S9, and several amino acids lining the binding pocket of CMKLR1. Microsecond scale molecular dynamics simulations support a balanced force distribution across the whole ligand-receptor interface that enhances thermodynamic stability of the captured binding pose of C9. The C9 interaction with CMKLR1 is drastically different from chemokine recognition by chemokine receptors, which follow a two-site two-step model. In contrast, C9 takes an "S"-shaped pose in the binding pocket of CMKLR1 much like angiotensin II in the AT1 receptor. Our mutagenesis and functional analyses confirmed the cryo-EM structure and key residues in the binding pocket for these interactions. Our findings provide a structural basis for chemerin recognition by CMKLR1 for the established chemotactic and adipokine activities. | ||||||
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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 | 7ykd.cif.gz | 215.7 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb7ykd.ent.gz | 167.8 KB | Display | PDB format |
| PDBx/mmJSON format | 7ykd.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/yk/7ykd ftp://data.pdbj.org/pub/pdb/validation_reports/yk/7ykd | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 33891MC 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
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules CBG
| #3: Protein | Mass: 40153.672 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: 37416.930 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: ![]() |
| #5: 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: ![]() |
-Protein/peptide / Protein / Antibody / Non-polymers , 4 types, 8 molecules LAS

| #1: Protein/peptide | Mass: 1063.161 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: RARRES2, TIG2 / Production host: ![]() |
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| #2: Protein | Mass: 42362.848 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CMKLR1, CHEMR23, DEZ / Production host: ![]() |
| #6: Antibody | Mass: 26337.307 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: a single-chain variable fragment (scFv16) derived from a developed antibody that bind to the αN helix of Gαi subunit used to stabilize the GPCR-G protein complex (https://doi. ...Details: a single-chain variable fragment (scFv16) derived from a developed antibody that bind to the αN helix of Gαi subunit used to stabilize the GPCR-G protein complex (https://doi.org/10.1038/s41467-018-06002-w) Source: (gene. exp.) ![]() ![]() |
| #7: Chemical | ChemComp-CLR / |
-Details
| Has ligand of interest | Y |
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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
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| Molecular weight | Value: 0.15 MDa / Experimental value: YES | ||||||||||||||||||||||||||||||
| Source (natural) |
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| Source (recombinant) |
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| Buffer solution | pH: 7.5 | ||||||||||||||||||||||||||||||
| Specimen | Conc.: 5 mg/ml / 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: 2000 nm / Nominal defocus min: 1200 nm |
| Image recording | Electron dose: 1.13 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 3D reconstruction | Resolution: 2.81 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 432349 / Symmetry type: POINT |
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