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- EMDB-31421: Cryo-EM structure of the GDP-bound dopamine receptor 1 and mini-G... -

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Entry
Database: EMDB / ID: EMD-31421
TitleCryo-EM structure of the GDP-bound dopamine receptor 1 and mini-Gs complex with Nb35
Map data
Sample
  • Complex: Cryo-EM structure of the GDP-bound dopamine receptor 1 and mini-Gs complex with Nb35
    • Protein or peptide: D(1A) dopamine receptor
    • Protein or peptide: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short,Isoform Gnas-2 of 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: Nanobody 35
  • Ligand: L-DOPAMINE
  • Ligand: MAGNESIUM ION
  • Ligand: GUANOSINE-5'-DIPHOSPHATE
KeywordsGPCR / dopamine receptor / mini-Gs / MEMBRANE PROTEIN
Function / homology
Function and homology information


dopamine neurotransmitter receptor activity, coupled via Gs / dopamine neurotransmitter receptor activity / cerebral cortex GABAergic interneuron migration / Dopamine receptors / regulation of dopamine uptake involved in synaptic transmission / dopamine binding / operant conditioning / phospholipase C-activating dopamine receptor signaling pathway / heterotrimeric G-protein binding / peristalsis ...dopamine neurotransmitter receptor activity, coupled via Gs / dopamine neurotransmitter receptor activity / cerebral cortex GABAergic interneuron migration / Dopamine receptors / regulation of dopamine uptake involved in synaptic transmission / dopamine binding / operant conditioning / phospholipase C-activating dopamine receptor signaling pathway / heterotrimeric G-protein binding / peristalsis / G protein-coupled receptor complex / modification of postsynaptic structure / positive regulation of neuron migration / habituation / grooming behavior / regulation of dopamine metabolic process / astrocyte development / dopamine transport / sensitization / striatum development / dentate gyrus development / positive regulation of potassium ion transport / conditioned taste aversion / maternal behavior / arrestin family protein binding / non-motile cilium / long-term synaptic depression / mating behavior / G protein-coupled dopamine receptor signaling pathway / adult walking behavior / : / ciliary membrane / temperature homeostasis / dopamine metabolic process / adenylate cyclase-activating G protein-coupled bile acid receptor signaling pathway / adenylate cyclase-activating serotonin receptor signaling pathway / transmission of nerve impulse / regulation of skeletal muscle contraction / PKA activation in glucagon signalling / hair follicle placode formation / developmental growth / intracellular transport / G-protein alpha-subunit binding / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / D1 dopamine receptor binding / vascular endothelial cell response to laminar fluid shear stress / behavioral fear response / renal water homeostasis / activation of adenylate cyclase activity / neuronal action potential / Hedgehog 'off' state / cellular response to acidic pH / positive regulation of synaptic transmission, glutamatergic / adenylate cyclase-activating adrenergic receptor signaling pathway / behavioral response to cocaine / synapse assembly / cellular response to glucagon stimulus / intracellular glucose homeostasis / presynaptic modulation of chemical synaptic transmission / adenylate cyclase activator activity / positive regulation of release of sequestered calcium ion into cytosol / positive regulation of insulin secretion involved in cellular response to glucose stimulus / trans-Golgi network membrane / response to amphetamine / synaptic transmission, glutamatergic / negative regulation of inflammatory response to antigenic stimulus / response to prostaglandin E / bone development / visual learning / platelet aggregation / G protein-coupled receptor activity / GABA-ergic synapse / vasodilation / cognition / G-protein beta/gamma-subunit complex binding / memory / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / protein import into nucleus / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / positive regulation of insulin secretion / 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 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / sensory perception of smell / 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 / long-term synaptic potentiation
Similarity search - Function
Dopamine D1 receptor / Dopamine receptor family / G-protein alpha subunit, group S / Serpentine type 7TM GPCR chemoreceptor Srsx / G protein alpha subunit, helical insertion / G protein alpha subunit / Guanine nucleotide binding protein (G-protein), alpha subunit / G-protein alpha subunit / G-alpha domain profile. / G-protein, gamma subunit ...Dopamine D1 receptor / Dopamine receptor family / G-protein alpha subunit, group S / Serpentine type 7TM GPCR chemoreceptor Srsx / G protein alpha subunit, helical insertion / G protein alpha subunit / Guanine nucleotide binding protein (G-protein), alpha subunit / G-protein alpha subunit / G-alpha domain profile. / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / G protein beta WD-40 repeat protein / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / 7 transmembrane receptor (rhodopsin family) / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 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. / 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
D(1A) dopamine 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) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.13 Å
AuthorsXiao T / Zheng S
Funding support China, 1 items
OrganizationGrant numberCountry
Ministry of Science and Technology (MoST, China) China
CitationJournal: Sci Adv / Year: 2022
Title: Structural insights into G protein activation by D1 dopamine receptor.
Authors: Xiao Teng / Sijia Chen / Qing Wang / Zhao Chen / Xiaoying Wang / Niu Huang / Sanduo Zheng /
Abstract: G protein-coupled receptors (GPCRs) comprise the largest family of membrane receptors and are the most important drug targets. An agonist-bound GPCR engages heterotrimeric G proteins and triggers the ...G protein-coupled receptors (GPCRs) comprise the largest family of membrane receptors and are the most important drug targets. An agonist-bound GPCR engages heterotrimeric G proteins and triggers the exchange of guanosine diphosphate (GDP) with guanosine triphosphate (GTP) to promote G protein activation. A complete understanding of molecular mechanisms of G protein activation has been hindered by a lack of structural information of GPCR-G protein complex in nucleotide-bound states. Here, we report the cryo-EM structures of the D1 dopamine receptor and mini-G complex in the nucleotide-free and nucleotide-bound states. These structures reveal major conformational changes in Gα such as structural rearrangements of the carboxyl- and amino-terminal α helices that account for the release of GDP and the GTP-dependent dissociation of Gα from Gβγ subunits. As validated by biochemical and cellular signaling studies, our structures shed light into the molecular basis of the entire signaling events of GPCR-mediated G protein activation.
History
DepositionJun 9, 2021-
Header (metadata) releaseJun 15, 2022-
Map releaseJun 15, 2022-
UpdateJul 2, 2025-
Current statusJul 2, 2025Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_31421.png

Downloads & links

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Map

FileDownload / File: emd_31421.map.gz / Format: CCP4 / Size: 22.2 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.09 Å/pix.
x 180 pix.
= 195.66 Å		1.09 Å/pix.
x 180 pix.
= 195.66 Å		1.09 Å/pix.
x 180 pix.
= 195.66 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.087 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.41
Minimum - Maximum-2.4711058 - 3.3338032
Average (Standard dev.)-0.0019765266 (±0.09814969)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions180180180
Spacing180180180
CellA=B=C: 195.66 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : Cryo-EM structure of the GDP-bound dopamine receptor 1 and mini-G...

EntireName: Cryo-EM structure of the GDP-bound dopamine receptor 1 and mini-Gs complex with Nb35
Components
  • Complex: Cryo-EM structure of the GDP-bound dopamine receptor 1 and mini-Gs complex with Nb35
    • Protein or peptide: D(1A) dopamine receptor
    • Protein or peptide: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short,Isoform Gnas-2 of 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: Nanobody 35
  • Ligand: L-DOPAMINE
  • Ligand: MAGNESIUM ION
  • Ligand: GUANOSINE-5'-DIPHOSPHATE

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Supramolecule #1: Cryo-EM structure of the GDP-bound dopamine receptor 1 and mini-G...

SupramoleculeName: Cryo-EM structure of the GDP-bound dopamine receptor 1 and mini-Gs complex with Nb35
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: D(1A) dopamine receptor

MacromoleculeName: D(1A) dopamine receptor / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 52.409656 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MKTIIALSYI FCLVFADYKD DDDASIDMRT LNTSAMDGTG LVVERDFSVR ILTACFLSLL ILSTLLGNTL VCAAVIRFRH LRSKVTNFF VISLAVSDLL VAVLVMPWKA VAEIAGFWPF GSFCNIWVAF DIMCSTASIL NLCVISVDRY WAISSPFRYE R KMTPKAAF ...String:
MKTIIALSYI FCLVFADYKD DDDASIDMRT LNTSAMDGTG LVVERDFSVR ILTACFLSLL ILSTLLGNTL VCAAVIRFRH LRSKVTNFF VISLAVSDLL VAVLVMPWKA VAEIAGFWPF GSFCNIWVAF DIMCSTASIL NLCVISVDRY WAISSPFRYE R KMTPKAAF ILISVAWTLS VLISFIPVQL SWHKAKPTSP SDGNATSLAE TIDNCDSSLS RTYAISSSVI SFYIPVAIMI VT YTRIYRI AQKQIRRIAA LERAAVHAKN CQTTTGNGKP VECSQPESSF KMSFKRETKV LKTLSVIMGV FVCCWLPFFI LNC ILPFCG SGETQPFCID SNTFDVFVWF GWANSSLNPI IYAFNADFRK AFSTLLGCYR LCPATNNAIE TVSINNNGAA MFSS HHEPR GSISKECNLV YLIPHAVGSS EDLKKEEAAG IARPLEKLSP ALSVILDYDT DVSLEKIQPI TQNGQHPT

UniProtKB: D(1A) dopamine receptor

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Macromolecule #2: Guanine nucleotide-binding protein G(s) subunit alpha isoforms sh...

MacromoleculeName: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short,Isoform Gnas-2 of Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 28.907684 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: NSKTEDQRNE EKAQREANKK IEKQLQKDKQ VYRATHRLLL LGADNSGKST IVKQMRILHG GSGGSGGTSG IFETKFQVDK VNFHMFDVG GQRDERRKWI QCFNDVTAII FVVDSSDYNR LQEALNLFKS IWNNRWLRTI SVILFLNKQD LLAEKVLAGK S KIEDYFPE ...String:
NSKTEDQRNE EKAQREANKK IEKQLQKDKQ VYRATHRLLL LGADNSGKST IVKQMRILHG GSGGSGGTSG IFETKFQVDK VNFHMFDVG GQRDERRKWI QCFNDVTAII FVVDSSDYNR LQEALNLFKS IWNNRWLRTI SVILFLNKQD LLAEKVLAGK S KIEDYFPE FARYTTPEDA TPEPGEDPRV TRAKYFIRDE FLRISTASGD GRHYCYPHFT CAVDTENARR IFNDCRDIIQ RM HLRQYEL L

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

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Macromolecule #3: 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: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 39.286891 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: HHHHHHLEVL FQGPGSSGSE LDQLRQEAEQ LKNQIRDARK ACADATLSQI TNNIDPVGRI QMRTRRTLRG HLAKIYAMHW GTDSRLLVS ASQDGKLIIW DSYTTNKVHA IPLRSSWVMT CAYAPSGNYV ACGGLDNICS IYNLKTREGN VRVSRELAGH T GYLSCCRF ...String:
HHHHHHLEVL FQGPGSSGSE LDQLRQEAEQ LKNQIRDARK ACADATLSQI TNNIDPVGRI QMRTRRTLRG HLAKIYAMHW GTDSRLLVS ASQDGKLIIW DSYTTNKVHA IPLRSSWVMT CAYAPSGNYV ACGGLDNICS IYNLKTREGN VRVSRELAGH T GYLSCCRF LDDNQIVTSS GDTTCALWDI ETGQQTTTFT GHTGDVMSLS LAPDTRLFVS GACDASAKLW DVREGMCRQT FT GHESDIN AICFFPNGNA FATGSDDATC RLFDLRADQE LMTYSHDNII CGITSVSFSK SGRLLLAGYD DFNCNVWDAL KAD RAGVLA GHDNRVSCLG VTDDGMAVAT GSWDSFLKIW N

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

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Macromolecule #4: 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: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 7.845078 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFSAI L

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

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Macromolecule #5: Nanobody 35

MacromoleculeName: Nanobody 35 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 17.352498 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MKYLLPTAAA GLLLLAAQPA MAQVQLQESG GGLVQPGGSL RLSCAASGFT FSNYKMNWVR QAPGKGLEWV SDISQSGASI SYTGSVKGR FTISRDNAKN TLYLQMNSLK PEDTAVYYCA RCPAPFTRDC FDVTSTTYAY RGQGTQVTVS SHHHHHHEPE A

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Macromolecule #6: L-DOPAMINE

MacromoleculeName: L-DOPAMINE / type: ligand / ID: 6 / Number of copies: 1 / Formula: LDP
Molecular weightTheoretical: 153.178 Da
Chemical component information

ChemComp-LDP:
L-DOPAMINE / medication*YM

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Macromolecule #7: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 7 / Number of copies: 1 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #8: GUANOSINE-5'-DIPHOSPHATE

MacromoleculeName: GUANOSINE-5'-DIPHOSPHATE / type: ligand / ID: 8 / Number of copies: 1 / Formula: GDP
Molecular weightTheoretical: 443.201 Da
Chemical component information

ChemComp-GDP:
GUANOSINE-5'-DIPHOSPHATE / GDP, energy-carrying molecule*YM

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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

Concentration4.0 mg/mL
BufferpH: 7.5
GridModel: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 35 sec.
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 281 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number real images: 601 / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal magnification: 64000
Sample stageCooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 973906
CTF correctionSoftware - Name: cryoSPARC (ver. v2)
Software - details: patch CTF was used to determine the CTF correction
Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: EMDB MAP
Final reconstructionNumber classes used: 2 / Resolution.type: BY AUTHOR / Resolution: 3.13 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 317029
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final 3D classificationNumber classes: 4 / Avg.num./class: 150 / Software - Name: cryoSPARC (ver. v2)
Software - details: A b-initio reconstructions was used to do classification

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