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Yorodumi- EMDB-31452: Cryo-EM structure of afamelanotide-bound melanocortin-1 receptor ... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-31452 | |||||||||
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Title | Cryo-EM structure of afamelanotide-bound melanocortin-1 receptor in complex with Gs protein, Nb35 and scFv16 | |||||||||
Map data | ||||||||||
Sample |
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Function / homology | Function and homology information 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 ...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 / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / 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 / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / 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 / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) / synthetic construct (others) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.7 Å | |||||||||
Authors | Ma S / Chen Y / Dai A / Yin W / Guo J / Yang D / Zhou F / Jiang Y / Wang M-W / Xu HE | |||||||||
Funding support | China, 1 items
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Citation | Journal: Cell Res / Year: 2021 Title: Structural mechanism of calcium-mediated hormone recognition and Gβ interaction by the human melanocortin-1 receptor. Authors: Shanshan Ma / Yan Chen / Antao Dai / Wanchao Yin / Jia Guo / Dehua Yang / Fulai Zhou / Yi Jiang / Ming-Wei Wang / H Eric Xu / Abstract: Melanocortins are peptide hormones critical for the regulation of stress response, energy homeostasis, inflammation, and skin pigmentation. Their functions are mediated by five G protein-coupled ...Melanocortins are peptide hormones critical for the regulation of stress response, energy homeostasis, inflammation, and skin pigmentation. Their functions are mediated by five G protein-coupled receptors (MC1R-MC5R), predominately through the stimulatory G protein (Gs). MC1R, the founding member of melanocortin receptors, is mainly expressed in melanocytes and is involved in melanogenesis. Dysfunction of MC1R is associated with the development of melanoma and skin cancer. Here we present three cryo-electron microscopy structures of the MC1R-Gs complexes bound to endogenous hormone α-MSH, a marketed drug afamelanotide, and a synthetic agonist SHU9119. These structures reveal the orthosteric binding pocket for the conserved HFRW motif among melanocortins and the crucial role of calcium ion in ligand binding. They also demonstrate the basis of differential activities among different ligands. In addition, unexpected interactions between MC1R and the Gβ subunit were discovered from these structures. Together, our results elucidate a conserved mechanism of calcium-mediated ligand recognition, a specific mode of G protein coupling, and a universal activation pathway of melanocortin receptors. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_31452.map.gz | 23.3 MB | EMDB map data format | |
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Header (meta data) | emd-31452-v30.xml emd-31452.xml | 22.3 KB 22.3 KB | Display Display | EMDB header |
Images | emd_31452.png | 57 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-31452 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-31452 | HTTPS FTP |
-Validation report
Summary document | emd_31452_validation.pdf.gz | 415.5 KB | Display | EMDB validaton report |
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Full document | emd_31452_full_validation.pdf.gz | 415.1 KB | Display | |
Data in XML | emd_31452_validation.xml.gz | 5.7 KB | Display | |
Data in CIF | emd_31452_validation.cif.gz | 6.4 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31452 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31452 | HTTPS FTP |
-Related structure data
Related structure data | 7f4hMC 7f4dC 7f4fC 7f4iC C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_31452.map.gz / Format: CCP4 / Size: 30.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.045 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
+Entire : Cryo-EM structure of afamelanotide-bound melanocortin-1 receptor ...
+Supramolecule #1: Cryo-EM structure of afamelanotide-bound melanocortin-1 receptor ...
+Supramolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
+Supramolecule #3: Guanine nucleotide-binding protein G(i) subunit alpha-1
+Supramolecule #4: Nanobody 35
+Supramolecule #5: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
+Supramolecule #6: Melanocortin-1 receptor
+Supramolecule #7: scFv16
+Supramolecule #8: Afamelanotide
+Macromolecule #1: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
+Macromolecule #2: Guanine nucleotide-binding protein G(i) subunit alpha-1
+Macromolecule #3: Nanobody 35
+Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
+Macromolecule #5: Melanocortin-1 receptor
+Macromolecule #6: scFv16
+Macromolecule #7: Afamelanotide
+Macromolecule #8: CALCIUM ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 80.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.7 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 460989 |
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Initial angle assignment | Type: OTHER |
Final angle assignment | Type: OTHER |