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Entry
Database: EMDB / ID: EMD-42426
TitleCryoEM structure of beta-2-adrenergic receptor in complex with GTP-bound Gs heterotrimer (Class S)
Map datastructure of beta-2-adrenergic receptor in complex with GTP-bound Gs heterotrimer (Class S)
Sample
  • Complex: Complex of beta-2 adrenergic receptor and Gs heterotrimer with GTP
    • Protein or peptide: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: Beta-2 adrenergic receptor
  • Ligand: GUANOSINE-5'-TRIPHOSPHATEGuanosine triphosphate
  • Ligand: MAGNESIUM ION
  • Ligand: (5R,6R)-6-(methylamino)-5,6,7,8-tetrahydronaphthalene-1,2,5-triol
KeywordsGPCR / Adrenergic / Receptor / G protein / SIGNALING PROTEIN
Function / homology
Function and homology information


: / beta2-adrenergic receptor activity / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / positive regulation of mini excitatory postsynaptic potential / positive regulation of cAMP-dependent protein kinase activity / norepinephrine binding / Adrenoceptors / heat generation / positive regulation of autophagosome maturation / positive regulation of AMPA receptor activity ...: / beta2-adrenergic receptor activity / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / positive regulation of mini excitatory postsynaptic potential / positive regulation of cAMP-dependent protein kinase activity / norepinephrine binding / Adrenoceptors / heat generation / positive regulation of autophagosome maturation / positive regulation of AMPA receptor activity / activation of transmembrane receptor protein tyrosine kinase activity / negative regulation of smooth muscle contraction / positive regulation of lipophagy / response to psychosocial stress / negative regulation of multicellular organism growth / adrenergic receptor signaling pathway / endosome to lysosome transport / diet induced thermogenesis / neuronal dense core vesicle / positive regulation of protein kinase A signaling / PKA activation in glucagon signalling / hair follicle placode formation / adenylate cyclase binding / smooth muscle contraction / developmental growth / intracellular transport / potassium channel regulator activity / D1 dopamine receptor binding / positive regulation of cAMP-mediated signaling / Hedgehog 'off' state / positive regulation of bone mineralization / brown fat cell differentiation / adenylate cyclase-activating adrenergic receptor signaling pathway / regulation of sodium ion transport / bone resorption / activation of adenylate cyclase activity / adenylate cyclase activator activity / response to cold / receptor-mediated endocytosis / trans-Golgi network membrane / clathrin-coated endocytic vesicle membrane / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / bone development / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / positive regulation of protein serine/threonine kinase activity / G-protein activation / G protein-coupled acetylcholine receptor signaling pathway / 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 / adenylate cyclase-activating G protein-coupled receptor signaling pathway / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste / cognition / photoreceptor disc membrane / platelet aggregation / Adrenaline,noradrenaline inhibits insulin secretion / positive regulation of GTPase activity / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / cellular response to amyloid-beta / GPER1 signaling / 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 / sensory perception of smell / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / Cargo recognition for clathrin-mediated endocytosis / retina development in camera-type eye / GTPase binding / Clathrin-mediated endocytosis / phospholipase C-activating G protein-coupled receptor signaling pathway / Ca2+ pathway / positive regulation of cold-induced thermogenesis / amyloid-beta binding / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events
Similarity search - Function
Beta 2 adrenoceptor / Adrenoceptor family / G-protein alpha subunit, group S / Serpentine type 7TM GPCR chemoreceptor Srsx / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / G-protein, gamma subunit ...Beta 2 adrenoceptor / Adrenoceptor family / G-protein alpha subunit, group S / Serpentine type 7TM GPCR chemoreceptor Srsx / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain / GGL domain / G protein gamma subunit-like motifs / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 7 transmembrane receptor (rhodopsin family) / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Beta-2 adrenergic receptor / 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 / Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsPapasergi-Scott MM / Skiniotis G
Funding support United States, 2 items
OrganizationGrant numberCountry
Other government
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS) United States
CitationJournal: Nature / Year: 2024
Title: Time-resolved cryo-EM of G-protein activation by a GPCR.
Authors: Makaía M Papasergi-Scott / Guillermo Pérez-Hernández / Hossein Batebi / Yang Gao / Gözde Eskici / Alpay B Seven / Ouliana Panova / Daniel Hilger / Marina Casiraghi / Feng He / Luis Maul ...Authors: Makaía M Papasergi-Scott / Guillermo Pérez-Hernández / Hossein Batebi / Yang Gao / Gözde Eskici / Alpay B Seven / Ouliana Panova / Daniel Hilger / Marina Casiraghi / Feng He / Luis Maul / Peter Gmeiner / Brian K Kobilka / Peter W Hildebrand / Georgios Skiniotis /
Abstract: G-protein-coupled receptors (GPCRs) activate heterotrimeric G proteins by stimulating guanine nucleotide exchange in the Gα subunit. To visualize this mechanism, we developed a time-resolved cryo-EM ...G-protein-coupled receptors (GPCRs) activate heterotrimeric G proteins by stimulating guanine nucleotide exchange in the Gα subunit. To visualize this mechanism, we developed a time-resolved cryo-EM approach that examines the progression of ensembles of pre-steady-state intermediates of a GPCR-G-protein complex. By monitoring the transitions of the stimulatory G protein in complex with the β-adrenergic receptor at short sequential time points after GTP addition, we identified the conformational trajectory underlying G-protein activation and functional dissociation from the receptor. Twenty structures generated from sequential overlapping particle subsets along this trajectory, compared to control structures, provide a high-resolution description of the order of main events driving G-protein activation in response to GTP binding. Structural changes propagate from the nucleotide-binding pocket and extend through the GTPase domain, enacting alterations to Gα switch regions and the α5 helix that weaken the G-protein-receptor interface. Molecular dynamics simulations with late structures in the cryo-EM trajectory support that enhanced ordering of GTP on closure of the α-helical domain against the nucleotide-bound Ras-homology domain correlates with α5 helix destabilization and eventual dissociation of the G protein from the GPCR. These findings also highlight the potential of time-resolved cryo-EM as a tool for mechanistic dissection of GPCR signalling events.
History
DepositionOct 19, 2023-
Header (metadata) releaseMar 6, 2024-
Map releaseMar 6, 2024-
UpdateJun 12, 2024-
Current statusJun 12, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

Downloads & links

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Map

FileDownload / File: emd_42426.map.gz / Format: CCP4 / Size: 134.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationstructure of beta-2-adrenergic receptor in complex with GTP-bound Gs heterotrimer (Class S)
Voxel sizeX=Y=Z: 0.8677 Å
Density
Contour LevelBy AUTHOR: 0.1
Minimum - Maximum-0.5945573 - 0.90335584
Average (Standard dev.)-0.000089100045 (±0.020921962)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions328328328
Spacing328328328
CellA=B=C: 284.6056 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_42426_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Additional map: #1

Fileemd_42426_additional_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Half map: Half Map B

Fileemd_42426_half_map_1.map
AnnotationHalf Map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Half map: Half Map A

Fileemd_42426_half_map_2.map
AnnotationHalf Map A
Projections & Slices
AxesZYX

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Sample components

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Entire : Complex of beta-2 adrenergic receptor and Gs heterotrimer with GTP

EntireName: Complex of beta-2 adrenergic receptor and Gs heterotrimer with GTP
Components
  • Complex: Complex of beta-2 adrenergic receptor and Gs heterotrimer with GTP
    • Protein or peptide: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: Beta-2 adrenergic receptor
  • Ligand: GUANOSINE-5'-TRIPHOSPHATEGuanosine triphosphate
  • Ligand: MAGNESIUM ION
  • Ligand: (5R,6R)-6-(methylamino)-5,6,7,8-tetrahydronaphthalene-1,2,5-triol

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Supramolecule #1: Complex of beta-2 adrenergic receptor and Gs heterotrimer with GTP

SupramoleculeName: Complex of beta-2 adrenergic receptor and Gs heterotrimer with GTP
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Details: Combined datasets of complex plunge frozen at 5 sec, 10 sec, or 17 sec after GTP addition to the sample.
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

MacromoleculeName: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 44.32616 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKSTIVKQM RILHVNGFNG DSEKATKVQD IKNNLKEAI ETIVAAMSNL VPPVELANPE NQFRVDYILS VMNVPDFDFP PEFYEHAKAL WEDEGVRACY ERSNEYQLID C AQYFLDKI ...String:
MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKSTIVKQM RILHVNGFNG DSEKATKVQD IKNNLKEAI ETIVAAMSNL VPPVELANPE NQFRVDYILS VMNVPDFDFP PEFYEHAKAL WEDEGVRACY ERSNEYQLID C AQYFLDKI DVIKQADYVP SDQDLLRCRV LTSGIFETKF QVDKVNFHMF DVGGQRDERR KWIQCFNDVT AIIFVVASSS YN MVIREDN QTNRLQEALN LFKSIWNNRW LRTISVILFL NKQDLLAEKV LAGKSKIEDY FPEFARYTTP EDATPEPGED PRV TRAKYF IRDEFLRIST ASGDGRHYCY PHFTCAVDTE NIRRVFNDCR DIIQRMHLRQ YELL

UniProtKB: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

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Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 37.573988 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: GSSGSELDQL RQEAEQLKNQ IRDARKACAD ATLSQITNNI DPVGRIQMRT RRTLRGHLAK IYAMHWGTDS RLLVSASQDG KLIIWDSYT TNKVHAIPLR SSWVMTCAYA PSGNYVACGG LDNICSIYNL KTREGNVRVS RELAGHTGYL SCCRFLDDNQ I VTSSGDTT ...String:
GSSGSELDQL RQEAEQLKNQ IRDARKACAD ATLSQITNNI DPVGRIQMRT RRTLRGHLAK IYAMHWGTDS RLLVSASQDG KLIIWDSYT TNKVHAIPLR SSWVMTCAYA PSGNYVACGG LDNICSIYNL KTREGNVRVS RELAGHTGYL SCCRFLDDNQ I VTSSGDTT CALWDIETGQ QTTTFTGHTG DVMSLSLAPD TRLFVSGACD ASAKLWDVRE GMCRQTFTGH ESDINAICFF PN GNAFATG SDDATCRLFD LRADQELMTY SHDNIICGIT SVSFSKSGRL LLAGYDDFNC NVWDALKADR AGVLAGHDNR VSC LGVTDD GMAVATGSWD SFLKIWN

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

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Macromolecule #3: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 7.861143 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

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Macromolecule #4: Beta-2 adrenergic receptor

MacromoleculeName: Beta-2 adrenergic receptor / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 51.767242 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MKTIIALSYI FCLVFADYKD DDDAMGQPGN GSAFLLAPNR SHAPDHDVEN LYFQGTQQRD EVWVVGMGIV MSLIVLAIVF GNVLVITAI AKFERLQTVT NYFITSLACA DLVMGLAVVP FGAAHILTKT WTFGNFWCEF WTSIDVLCVT ASIETLCVIA V DRYFAITS ...String:
MKTIIALSYI FCLVFADYKD DDDAMGQPGN GSAFLLAPNR SHAPDHDVEN LYFQGTQQRD EVWVVGMGIV MSLIVLAIVF GNVLVITAI AKFERLQTVT NYFITSLACA DLVMGLAVVP FGAAHILTKT WTFGNFWCEF WTSIDVLCVT ASIETLCVIA V DRYFAITS PFKYQSLLTK NKARVIILMV WIVSGLTSFL PIQMHWYRAT HQEAINCYAE ETCCDFFTNQ AYAIASSIVS FY VPLVIMV FVYSRVFQEA KRQLQKIDKS EGRFHVQNLS QVEQDGRTGH GLRRSSKFCL KEHKALKTLG IIMGTFTLCW LPF FIVNIV HVIQDNLIRK EVYILLNWIG YVNSGFNPLI YCRSPDFRIA FQELLCLRRS SLKAYGNGYS SNGNTGEQSG LEVL FQGPY HVEQEKENKL LAEDLPGTED FVGHQGTVPS DNIDSQGRNA STNDSLLETS QVAPA

UniProtKB: Beta-2 adrenergic receptor

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Macromolecule #5: GUANOSINE-5'-TRIPHOSPHATE

MacromoleculeName: GUANOSINE-5'-TRIPHOSPHATE / type: ligand / ID: 5 / Number of copies: 1 / Formula: GTP
Molecular weightTheoretical: 523.18 Da
Chemical component information

ChemComp-GTP:
GUANOSINE-5'-TRIPHOSPHATE / GTP, energy-carrying molecule*YM / Guanosine triphosphate

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Macromolecule #6: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 6 / Number of copies: 1 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #7: (5R,6R)-6-(methylamino)-5,6,7,8-tetrahydronaphthalene-1,2,5-triol

MacromoleculeName: (5R,6R)-6-(methylamino)-5,6,7,8-tetrahydronaphthalene-1,2,5-triol
type: ligand / ID: 7 / Number of copies: 1 / Formula: G1I
Molecular weightTheoretical: 209.242 Da
Chemical component information

ChemComp-G1I:
(5R,6R)-6-(methylamino)-5,6,7,8-tetrahydronaphthalene-1,2,5-triol

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
Details: GTP was added just prior to freezing at 5 sec, 10 sec, or 17 sec before plunging.
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV
Details: GTP was added just prior to freezing at 5 sec, 10 sec, or 17 sec before plunging..

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.4 µm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Detector mode: COUNTING / Average electron dose: 50.0 e/Å2
Details: The cryoEM map is the result of combining multiple datasets: cryo-EM imaging of the beta-2AR-Gs + GTP (5 sec) complex was performed on a Titan Krios electron microscope equipped with a K3 ...Details: The cryoEM map is the result of combining multiple datasets: cryo-EM imaging of the beta-2AR-Gs + GTP (5 sec) complex was performed on a Titan Krios electron microscope equipped with a K3 Summit direct electron detector (Gatan). The microscope was operated at 300 kV accelerating voltage, with a nominal magnification of 105,000x in counting mode resulting in a magnified pixel size of 0.8677 Angstrom. A total exposure of 60.48 electrons/ Angstrom^2 over 63 frames with defocus ranging from -1.0 - -2.0 micrometers was used. Cryo-EM imaging of beta-2AR-Gs + GTP (10 sec) complex was performed on four separate grids over three collection sessions. The microscope was operated at 300 kV accelerating voltage, with a magnification at the camera of 58,679x in counting mode resulting in a magnified pixel size of 0.8521 Angstrom. For the first and second grids, movies were obtained at an exposure rate of 21.13 electrons/Angstrum^2/sec with defocus ranging from -0.4 - -2.0 micrometers. The total exposure time was 2.717 sec over 77 frames per movie stack. For an additional collection of the first grid, movies were obtained at an exposure rate of 20.95 electrons/ Angstrum^2/sec with defocus ranging from -0.4 -2.0 micrometers. The total exposure time was 2.717 sec over 77 frames per movie stack. For the third and fourth grids, movies were obtained at an exposure rate of 30.71 electrons/ Angstrum^2/sec with defocus ranging from -0.5 - -1.6 micrometers. The total exposure time was 2.008 sec over 79 frames per movie stack. Cryo-EM imaging of beta-2AR-Gs + GTP (17 sec) was performed on a Titan Krios equipped with a post-column energy filter, with a magnification of 105,000x in counting mode resulting in a magnified pixel size of 0.8677 Angstrom. Movies were obtained at an exposure rate of 32.46 electrons/Angstrum^2/sec with defocus ranging from -0.4 - -0.9 micrometers. The total exposure time was 1.999 sec over 79 frames per movie stack.
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 19918625
Startup modelType of model: INSILICO MODEL
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final 3D classificationNumber classes: 20 / Software - Name: cryoSPARC
Final angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Software - details: Local refinement masking out micelle
Details: Contribution of each dataset to this refined class: 10.90% 5 sec dataset; 53.50% 10 sec dataset; 35.50% 17 sec dataset
Number images used: 54024
FSC plot (resolution estimation)

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