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- EMDB-20078: Muscarinic acetylcholine receptor 1-G11 protein complex -

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Basic information

Entry
Database: EMDB / ID: EMD-20078
TitleMuscarinic acetylcholine receptor 1-G11 protein complex
Map data
Samplemuscarinic acetylcholine receptor 1 in complex with heterotrimeric G11 protein
  • (Guanine nucleotide-binding protein ...) x 4
  • (Muscarinic acetylcholine receptor ...) x 2
  • Antibody fragment
  • (ligand) x 2
Function / homology
Function and homology information


guanyl nucleotide binding / regulation of glial cell proliferation / positive regulation of ion transport / regulation of melanocyte differentiation / phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway / type 2A serotonin receptor binding / saliva secretion / G protein-coupled acetylcholine receptor activity / regulation of locomotion / neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential ...guanyl nucleotide binding / regulation of glial cell proliferation / positive regulation of ion transport / regulation of melanocyte differentiation / phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway / type 2A serotonin receptor binding / saliva secretion / G protein-coupled acetylcholine receptor activity / regulation of locomotion / neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / phospholipase C-activating dopamine receptor signaling pathway / G protein-coupled serotonin receptor activity / cholinergic synapse / neurotransmitter receptor activity / cellular response to pH / entrainment of circadian clock / developmental pigmentation / phototransduction, visible light / neuromuscular synaptic transmission / phosphatidylinositol phospholipase C activity / cardiac muscle cell apoptotic process / sensory perception of taste / G-protein beta/gamma-subunit complex / cellular response to catecholamine stimulus / G protein-coupled acetylcholine receptor signaling pathway / protein kinase C-activating G protein-coupled receptor signaling pathway / alkylglycerophosphoethanolamine phosphodiesterase activity / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / action potential / positive regulation of intracellular protein transport / rhodopsin mediated signaling pathway / adenylate cyclase-activating dopamine receptor signaling pathway / photoreceptor outer segment membrane / G-protein beta-subunit binding / photoreceptor disc membrane / spectrin binding / G-protein beta/gamma-subunit complex binding / photoreceptor outer segment / heterotrimeric G-protein complex / axon terminus / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G protein-coupled receptor activity / extracellular vesicle / Wnt signaling pathway, calcium modulating pathway / cellular response to prostaglandin E stimulus / retina development in camera-type eye / phospholipase C-activating G protein-coupled receptor signaling pathway / integral component of postsynaptic density membrane / GTPase binding / G protein-coupled receptor binding / photoreceptor inner segment / cognition / integral component of presynaptic membrane / Schaffer collateral - CA1 synapse / skeletal system development / nervous system development / cell body / cell population proliferation / lysosomal membrane / cellular response to hypoxia / chemical synaptic transmission / positive regulation of cytosolic calcium ion concentration / platelet activation / Ras protein signal transduction / heart development / protein folding / GTPase activity / synapse / G protein-coupled receptor signaling pathway / glutamatergic synapse / cell junction / GTP binding / dendrite / protein-containing complex binding / signal transduction / integral component of plasma membrane / go:0005623: / extracellular exosome / membrane / plasma membrane / metal ion binding / cytosol / cytoplasm
G-protein, beta subunit / GPCR, rhodopsin-like, 7TM / Muscarinic acetylcholine receptor family / WD40 repeat / G-protein, gamma subunit / G-protein alpha subunit, group Q / Muscarinic acetylcholine receptor M1 / G protein-coupled receptor, rhodopsin-like / G protein alpha subunit, helical insertion / G-protein gamma-like domain ...G-protein, beta subunit / GPCR, rhodopsin-like, 7TM / Muscarinic acetylcholine receptor family / WD40 repeat / G-protein, gamma subunit / G-protein alpha subunit, group Q / Muscarinic acetylcholine receptor M1 / G protein-coupled receptor, rhodopsin-like / G protein alpha subunit, helical insertion / G-protein gamma-like domain / Guanine nucleotide binding protein (G-protein), alpha subunit / Guanine nucleotide-binding protein, beta subunit / WD40/YVTN repeat-like-containing domain superfamily / WD40-repeat-containing domain / WD40 repeat, conserved site / G-protein beta WD-40 repeat / P-loop containing nucleoside triphosphate hydrolase / G-protein gamma-like domain superfamily / WD40-repeat-containing domain superfamily
Guanine nucleotide-binding protein G(i) subunit alpha-1 / Muscarinic acetylcholine receptor M1 / Guanine nucleotide-binding protein subunit alpha-11 / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Biological speciesHomo sapiens (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsMaeda S / Qianhui Q / Skiniotis G / Kobilka B
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM083118 United States
CitationJournal: Science / Year: 2019
Title: 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.
Validation ReportPDB-ID: 6oij

SummaryFull reportAbout validation report
History
DepositionApr 9, 2019-
Header (metadata) releaseMay 1, 2019-
Map releaseMay 8, 2019-
UpdateJan 8, 2020-
Current statusJan 8, 2020Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.023
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by height
  • Surface level: 0.023
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6oij
  • Surface level: 0.023
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_20078.map.gz / Format: CCP4 / Size: 40.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.06 Å/pix.
x 220 pix.
= 233.2 Å
1.06 Å/pix.
x 220 pix.
= 233.2 Å
1.06 Å/pix.
x 220 pix.
= 233.2 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.06 Å
Density
Contour LevelBy AUTHOR: 0.01 / Movie #1: 0.023
Minimum - Maximum-0.08929198 - 0.1408231
Average (Standard dev.)-0.000007907 (±0.004012879)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions220220220
Spacing220220220
CellA=B=C: 233.19998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.061.061.06
M x/y/z220220220
origin x/y/z0.0000.0000.000
length x/y/z233.200233.200233.200
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS220220220
D min/max/mean-0.0890.141-0.000

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Supplemental data

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Sample components

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Entire muscarinic acetylcholine receptor 1 in complex with heterotrimeri...

EntireName: muscarinic acetylcholine receptor 1 in complex with heterotrimeric G11 protein
Number of components: 10

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Component #1: protein, muscarinic acetylcholine receptor 1 in complex with hete...

ProteinName: muscarinic acetylcholine receptor 1 in complex with heterotrimeric G11 protein
Recombinant expression: No
MassTheoretical: 150 kDa

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Component #2: protein, Guanine nucleotide-binding protein G(i) subunit alpha-1,...

ProteinName: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein subunit alpha-11, Antibody fragment, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, ...Name: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein subunit alpha-11, Antibody fragment, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Recombinant expression: No
SourceSpecies: Homo sapiens (human)
Source (engineered)Expression System: Trichoplusia ni (cabbage looper)

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Component #3: protein, Muscarinic acetylcholine receptor M1

ProteinName: Muscarinic acetylcholine receptor M1 / Recombinant expression: No
SourceSpecies: Homo sapiens (human)
Source (engineered)Expression System: Spodoptera frugiperda (fall armyworm)

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Component #4: protein, Guanine nucleotide-binding protein G(i) subunit alpha-1,...

ProteinName: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein subunit alpha-11
Number of Copies: 1 / Recombinant expression: No
MassTheoretical: 41.271086 kDa
SourceSpecies: Homo sapiens (human)
Source (engineered)Expression System: Trichoplusia ni (cabbage looper)

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Component #5: protein, Muscarinic acetylcholine receptor M1

ProteinName: Muscarinic acetylcholine receptor M1 / Number of Copies: 1 / Recombinant expression: No
MassTheoretical: 41.241262 kDa
SourceSpecies: Homo sapiens (human)
Source (engineered)Expression System: Spodoptera frugiperda (fall armyworm)

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Component #6: protein, Antibody fragment

ProteinName: Antibody fragment / Number of Copies: 1 / Recombinant expression: No
MassTheoretical: 27.340482 kDa
SourceSpecies: Mus musculus (house mouse)
Source (engineered)Expression System: Trichoplusia ni (cabbage looper)

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Component #7: protein, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subuni...

ProteinName: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Number of Copies: 1 / Recombinant expression: No
MassTheoretical: 37.728152 kDa
SourceSpecies: Homo sapiens (human)
Source (engineered)Expression System: Trichoplusia ni (cabbage looper)

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Component #8: protein, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subuni...

ProteinName: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Number of Copies: 1 / Recombinant expression: No
MassTheoretical: 7.861143 kDa
SourceSpecies: Homo sapiens (human)
Source (engineered)Expression System: Trichoplusia ni (cabbage looper)

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Component #9: ligand, 4-(4,5-dihydro-1,2-oxazol-3-yloxy)-N,N,N-trimethylbut-2-y...

LigandName: 4-(4,5-dihydro-1,2-oxazol-3-yloxy)-N,N,N-trimethylbut-2-yn-1-aminium
Number of Copies: 1 / Recombinant expression: No
MassTheoretical: 0.197254 kDa

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Component #10: ligand, CHOLESTEROL HEMISUCCINATE

LigandName: CHOLESTEROL HEMISUCCINATE / Number of Copies: 2 / Recombinant expression: No
MassTheoretical: 0.486726 kDa

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Experimental details

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Sample preparation

SpecimenSpecimen state: Particle / Method: cryo EM
Sample solutionpH: 7.5
Support filmunspecified
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
ImagingMicroscope: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Electron dose: 7 e/Å2 / Illumination mode: FLOOD BEAM
LensImaging mode: BRIGHT FIELD
Specimen HolderModel: OTHER
CameraDetector: GATAN K2 SUMMIT (4k x 4k)

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Image processing

ProcessingMethod: single particle reconstruction / Applied symmetry: C1 (asymmetric) / Number of projections: 277988
3D reconstructionResolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF

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Atomic model buiding

Output model

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