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Open data
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Basic information
| Entry | Database: PDB / ID: 6oij | ||||||
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| Title | Muscarinic acetylcholine receptor 1-G11 protein complex | ||||||
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Keywords | SIGNALING PROTEIN / G-protein coupled receptor-G-protein complex / neurotransmitter receptor | ||||||
| Function / homology | Function and homology informationregulation of melanocyte differentiation / saliva secretion / regulation of glial cell proliferation / positive regulation of monoatomic ion transport / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway / endothelin receptor signaling pathway / Muscarinic acetylcholine receptors / G protein-coupled acetylcholine receptor activity ...regulation of melanocyte differentiation / saliva secretion / regulation of glial cell proliferation / positive regulation of monoatomic ion transport / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway / endothelin receptor signaling pathway / Muscarinic acetylcholine receptors / G protein-coupled acetylcholine receptor activity / cholinergic synapse / phospholipase C-activating dopamine receptor signaling pathway / developmental pigmentation / cellular response to pH / positive regulation of intracellular protein transport / PLC beta mediated events / entrainment of circadian clock / cranial skeletal system development / neuromuscular synaptic transmission / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / regulation of locomotion / ligand-gated ion channel signaling pathway / regulation of postsynaptic membrane potential / action potential / phototransduction, visible light / photoreceptor outer segment / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / postsynaptic modulation of chemical synaptic transmission / enzyme regulator activity / axon terminus / Turbulent (oscillatory, disturbed) flow shear stress activates signaling by PIEZO1 and integrins in endothelial cells / skeletal system development / G protein-coupled receptor binding / postsynaptic density membrane / positive regulation of insulin secretion / regulation of blood pressure / Schaffer collateral - CA1 synapse / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / cognition / G-protein beta/gamma-subunit complex binding / 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 / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / photoreceptor disc membrane / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / 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 / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 / 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 / nervous system development / 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) / heart development / retina development in camera-type eye / G protein activity / 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 / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / chemical synaptic transmission / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity Similarity search - Function | ||||||
| Biological species | Homo sapiens (human)![]() | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å | ||||||
Authors | Maeda, S. / Qianhui, Q. / Skiniotis, G. / Kobilka, B. | ||||||
| Funding support | United States, 1items
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Citation | Journal: Science / Year: 2019Title: Structures of the M1 and M2 muscarinic acetylcholine receptor/G-protein complexes. Authors: Shoji Maeda / Qianhui Qu / Michael J Robertson / Georgios Skiniotis / Brian K Kobilka / ![]() Abstract: Muscarinic acetylcholine receptors are G protein-coupled receptors that respond to acetylcholine and play important signaling roles in the nervous system. There are five muscarinic receptor subtypes ...Muscarinic acetylcholine receptors are G protein-coupled receptors that respond to acetylcholine and play important signaling roles in the nervous system. There are five muscarinic receptor subtypes (M1R to M5R), which, despite sharing a high degree of sequence identity in the transmembrane region, couple to different heterotrimeric GTP-binding proteins (G proteins) to transmit signals. M1R, M3R, and M5R couple to the G family, whereas M2R and M4R couple to the G family. Here, we present and compare the cryo-electron microscopy structures of M1R in complex with G and M2R in complex with G The M1R-G complex exhibits distinct features, including an extended transmembrane helix 5 and carboxyl-terminal receptor tail that interacts with G protein. Detailed analysis of these structures provides a framework for understanding the molecular determinants of G-protein coupling selectivity. | ||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 6oij.cif.gz | 220.1 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb6oij.ent.gz | 166.5 KB | Display | PDB format |
| PDBx/mmJSON format | 6oij.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 6oij_validation.pdf.gz | 1003.7 KB | Display | wwPDB validaton report |
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| Full document | 6oij_full_validation.pdf.gz | 1015.1 KB | Display | |
| Data in XML | 6oij_validation.xml.gz | 34.5 KB | Display | |
| Data in CIF | 6oij_validation.cif.gz | 54.5 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/oi/6oij ftp://data.pdbj.org/pub/pdb/validation_reports/oi/6oij | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 20078MC ![]() 6oikC M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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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 ABG
| #1: Protein | Mass: 41271.086 Da / Num. of mol.: 1 Mutation: chimeric protein between G-alpha1i(1-29) and G-alpha11(30-) Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNAI1, GNA11, GA11 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: A0A3B3ITX3, UniProt: P29992 |
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| #4: Protein | Mass: 37728.152 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P62873 |
| #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: Trichoplusia ni (cabbage looper) / References: UniProt: P59768 |
-Protein / Antibody , 2 types, 2 molecules RH
| #2: Protein | Mass: 41241.262 Da / Num. of mol.: 1 / Mutation: N11Q, N21Q Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CHRM1 / Production host: ![]() |
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| #3: Antibody | Mass: 27340.482 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Trichoplusia ni (cabbage looper) |
-Non-polymers , 2 types, 3 molecules 


| #6: Chemical | ChemComp-IXO / |
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| #7: Chemical |
-Details
| Has protein modification | 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 |
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Sample preparation
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| Molecular weight | Value: 0.15 MDa / Experimental value: NO | ||||||||||||||||||||||||
| Source (natural) |
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| Buffer solution | pH: 7.5 | ||||||||||||||||||||||||
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
| Specimen support | Details: unspecified | ||||||||||||||||||||||||
| 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 |
| Image recording | Electron dose: 7 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
| EM software | Name: RELION / Version: 2.1 / Category: image acquisition |
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
| Symmetry | Point symmetry: C1 (asymmetric) |
| 3D reconstruction | Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 277988 / Symmetry type: POINT |
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Homo sapiens (human)

United States, 1items
Citation
UCSF Chimera












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Trichoplusia ni (cabbage looper)
