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- PDB-7w6p: Cryo-EM structure of the alpha2A adrenergic receptor GoA signalin... -

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Basic information

Entry
Database: PDB / ID: 7w6p
TitleCryo-EM structure of the alpha2A adrenergic receptor GoA signaling complex bound to a G protein biased agonist
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • Alpha-2A adrenergic receptor
  • scFv
KeywordsMEMBRANE PROTEIN / GPCR / G-protein / signaling complex / biased agonist
Function / homology
Function and homology information


negative regulation of uterine smooth muscle contraction / adenylate cyclase-inhibiting adrenergic receptor signaling pathway / phospholipase C-activating adrenergic receptor signaling pathway / alpha2-adrenergic receptor activity / Adrenaline signalling through Alpha-2 adrenergic receptor / alpha-2C adrenergic receptor binding / receptor transactivation / epinephrine binding / alpha-1B adrenergic receptor binding / negative regulation of norepinephrine secretion ...negative regulation of uterine smooth muscle contraction / adenylate cyclase-inhibiting adrenergic receptor signaling pathway / phospholipase C-activating adrenergic receptor signaling pathway / alpha2-adrenergic receptor activity / Adrenaline signalling through Alpha-2 adrenergic receptor / alpha-2C adrenergic receptor binding / receptor transactivation / epinephrine binding / alpha-1B adrenergic receptor binding / negative regulation of norepinephrine secretion / negative regulation of calcium ion transmembrane transporter activity / negative regulation of epinephrine secretion / heterotrimeric G-protein binding / negative regulation of calcium ion-dependent exocytosis / dopaminergic synapse / Surfactant metabolism / mu-type opioid receptor binding / corticotropin-releasing hormone receptor 1 binding / positive regulation of potassium ion transport / thermoception / fear response / thioesterase binding / negative regulation of insulin secretion involved in cellular response to glucose stimulus / vesicle docking involved in exocytosis / positive regulation of membrane protein ectodomain proteolysis / norepinephrine binding / intestinal absorption / Adrenoceptors / positive regulation of epidermal growth factor receptor signaling pathway / G protein-coupled dopamine receptor signaling pathway / regulation of heart contraction / positive regulation of wound healing / activation of protein kinase activity / adrenergic receptor signaling pathway / negative regulation of calcium ion transport / Rho protein signal transduction / regulation of vasoconstriction / negative regulation of lipid catabolic process / negative regulation of insulin secretion / adenylate cyclase-activating adrenergic receptor signaling pathway / G protein-coupled serotonin receptor binding / GABA-ergic synapse / axon terminus / presynaptic active zone membrane / cellular response to hormone stimulus / muscle contraction / presynaptic modulation of chemical synaptic transmission / activation of protein kinase B activity / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / guanyl-nucleotide exchange factor activity / positive regulation of cytokine production / female pregnancy / locomotory behavior / positive regulation of MAP kinase activity / postsynaptic density membrane / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Activation of the phototransduction cascade / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / platelet activation / 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 / vasodilation / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / 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 / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / 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 / glucose homeostasis
Similarity search - Function
Alpha 2A adrenoceptor / Adrenoceptor family / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / G-protein, gamma subunit ...Alpha 2A adrenoceptor / Adrenoceptor family / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / 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 / 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
N-pyridin-4-ylisoquinolin-4-amine / Alpha-2A adrenergic receptor / Guanine nucleotide-binding protein G(o) subunit alpha / 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
Similarity search - Component
Biological speciesHomo sapiens (human)
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.47 Å
AuthorsXu, J. / Fink, E.A. / Shoichet, B.K. / Du, Y.
Funding support1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
CitationJournal: Science / Year: 2022
Title: Structure-based discovery of nonopioid analgesics acting through the α-adrenergic receptor.
Authors: Elissa A Fink / Jun Xu / Harald Hübner / Joao M Braz / Philipp Seemann / Charlotte Avet / Veronica Craik / Dorothee Weikert / Maximilian F Schmidt / Chase M Webb / Nataliya A Tolmachova / ...Authors: Elissa A Fink / Jun Xu / Harald Hübner / Joao M Braz / Philipp Seemann / Charlotte Avet / Veronica Craik / Dorothee Weikert / Maximilian F Schmidt / Chase M Webb / Nataliya A Tolmachova / Yurii S Moroz / Xi-Ping Huang / Chakrapani Kalyanaraman / Stefan Gahbauer / Geng Chen / Zheng Liu / Matthew P Jacobson / John J Irwin / Michel Bouvier / Yang Du / Brian K Shoichet / Allan I Basbaum / Peter Gmeiner /
Abstract: Because nonopioid analgesics are much sought after, we computationally docked more than 301 million virtual molecules against a validated pain target, the α-adrenergic receptor (αAR), seeking new ...Because nonopioid analgesics are much sought after, we computationally docked more than 301 million virtual molecules against a validated pain target, the α-adrenergic receptor (αAR), seeking new αAR agonists chemotypes that lack the sedation conferred by known αAR drugs, such as dexmedetomidine. We identified 17 ligands with potencies as low as 12 nanomolar, many with partial agonism and preferential G and G signaling. Experimental structures of αAR complexed with two of these agonists confirmed the docking predictions and templated further optimization. Several compounds, including the initial docking hit '9087 [mean effective concentration (EC) of 52 nanomolar] and two analogs, '7075 and PS75 (EC 4.1 and 4.8 nanomolar), exerted on-target analgesic activity in multiple in vivo pain models without sedation. These newly discovered agonists are interesting as therapeutic leads that lack the liabilities of opioids and the sedation of dexmedetomidine.
History
DepositionDec 2, 2021Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Sep 28, 2022Provider: repository / Type: Initial release
Revision 1.1Oct 12, 2022Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID
Revision 1.2Nov 13, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Guanine nucleotide-binding protein G(o) subunit alpha
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
G: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
H: scFv
R: Alpha-2A adrenergic receptor
hetero molecules


Theoretical massNumber of molelcules
Total (without water)170,1896
Polymers169,9685
Non-polymers2211
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABG

#1: Protein Guanine nucleotide-binding protein G(o) subunit alpha


Mass: 40100.500 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNAO1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P09471
#2: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 38402.867 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
#3: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


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

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Antibody / Protein / Non-polymers , 3 types, 3 molecules HR

#4: Antibody scFv


Mass: 32898.781 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Trichoplusia ni (cabbage looper)
#5: Protein Alpha-2A adrenergic receptor / Alpha-2 adrenergic receptor subtype C10 / Alpha-2A adrenoreceptor / Alpha-2A adrenoceptor / Alpha-2AAR


Mass: 50704.566 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ADRA2A, ADRA2R, ADRAR / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P08913
#6: Chemical ChemComp-W96 / N-pyridin-4-ylisoquinolin-4-amine


Mass: 221.257 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C14H11N3 / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Signaling complex of alpha2A adrenergic receptor with GoA
Type: COMPLEX / Entity ID: #1-#5 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
11Homo sapiens (human)9606
21Mus musculus (house mouse)10090
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
11Trichoplusia ni (cabbage looper)7111
21Spodoptera frugiperda (fall armyworm)7108
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.47 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 287431 / Symmetry type: POINT

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