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- EMDB-24378: 5-HT2AR bound to a novel agonist in complex with a mini-Gq protei... -

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Basic information

Entry
Database: EMDB / ID: EMD-24378
Title5-HT2AR bound to a novel agonist in complex with a mini-Gq protein and an active-state stabilizing single-chain variable fragment (scFv16) obtained by cryo-electron microscopy (cryoEM)
Map dataPost-processed map
Sample
  • Complex: 5-HT2AR bound to a tetrahydropyridine agonist (R-69) in complex with heterotrimeric mini-Gq protein and single-chain variable fragment (scFv16)
    • Protein or peptide: 5-hydroxytryptamine receptor 2A
    • Protein or peptide: G protein subunit q (Gi2-mini-Gq chimera)
    • 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: single-chain variable fragment 16 (scFv16)
  • Ligand: (3R)-3-methyl-5-(1H-pyrrolo[2,3-b]pyridin-3-yl)-1,2,3,6-tetrahydropyridin-1-ium
Function / homology
Function and homology information


protein localization to cytoskeleton / 1-(4-iodo-2,5-dimethoxyphenyl)propan-2-amine binding / Gq/11-coupled serotonin receptor activity / phospholipase C-activating serotonin receptor signaling pathway / positive regulation of phosphatidylinositol biosynthetic process / G protein-coupled serotonin receptor signaling pathway / G protein-coupled serotonin receptor complex / serotonin receptor signaling pathway / Serotonin receptors / artery smooth muscle contraction ...protein localization to cytoskeleton / 1-(4-iodo-2,5-dimethoxyphenyl)propan-2-amine binding / Gq/11-coupled serotonin receptor activity / phospholipase C-activating serotonin receptor signaling pathway / positive regulation of phosphatidylinositol biosynthetic process / G protein-coupled serotonin receptor signaling pathway / G protein-coupled serotonin receptor complex / serotonin receptor signaling pathway / Serotonin receptors / artery smooth muscle contraction / cell body fiber / urinary bladder smooth muscle contraction / serotonin binding / negative regulation of synaptic transmission, glutamatergic / G protein-coupled serotonin receptor activity / neurotransmitter receptor activity / temperature homeostasis / regulation of dopamine secretion / protein tyrosine kinase activator activity / behavioral response to cocaine / detection of temperature stimulus involved in sensory perception of pain / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / negative regulation of potassium ion transport / activation of phospholipase C activity / positive regulation of fat cell differentiation / detection of mechanical stimulus involved in sensory perception of pain / release of sequestered calcium ion into cytosol / positive regulation of vasoconstriction / presynaptic modulation of chemical synaptic transmission / positive regulation of glycolytic process / dendritic shaft / phosphatidylinositol 3-kinase/protein kinase B signal transduction / caveola / glycolytic process / 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 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 / intracellular calcium ion homeostasis / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Sensory perception of sweet, bitter, and umami (glutamate) taste / memory / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / 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 / adenylate cyclase-activating dopamine receptor signaling pathway / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / sensory perception of taste / GPER1 signaling / G-protein beta-subunit binding / heterotrimeric G-protein complex / Inactivation, recovery and regulation of the phototransduction cascade / positive regulation of neuron apoptotic process / extracellular vesicle / G alpha (12/13) signalling events / positive regulation of peptidyl-tyrosine phosphorylation / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / virus receptor activity / retina development in camera-type eye / GTPase binding / presynaptic membrane / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / positive regulation of cytosolic calcium ion concentration / G alpha (i) signalling events / fibroblast proliferation / chemical synaptic transmission / cytoplasmic vesicle / G alpha (s) signalling events / postsynaptic membrane / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / positive regulation of ERK1 and ERK2 cascade / response to xenobiotic stimulus / G protein-coupled receptor signaling pathway / lysosomal membrane / axon / GTPase activity / dendrite
Similarity search - Function
5-Hydroxytryptamine 2A receptor / 5-hydroxytryptamine receptor family / Serpentine type 7TM GPCR chemoreceptor Srsx / 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 ...5-Hydroxytryptamine 2A receptor / 5-hydroxytryptamine receptor family / Serpentine type 7TM GPCR chemoreceptor Srsx / 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. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
5-hydroxytryptamine receptor 2A / 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)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.45 Å
AuthorsBarros-Alvarez X / Kim K / Panova O / Roth BL / Skiniotis G
Funding support United States, 1 items
OrganizationGrant numberCountry
Defense Advanced Research Projects Agency (DARPA) United States
CitationJournal: Nature / Year: 2022
Title: Bespoke library docking for 5-HT receptor agonists with antidepressant activity.
Authors: Anat Levit Kaplan / Danielle N Confair / Kuglae Kim / Ximena Barros-Álvarez / Ramona M Rodriguiz / Ying Yang / Oh Sang Kweon / Tao Che / John D McCorvy / David N Kamber / James P Phelan / ...Authors: Anat Levit Kaplan / Danielle N Confair / Kuglae Kim / Ximena Barros-Álvarez / Ramona M Rodriguiz / Ying Yang / Oh Sang Kweon / Tao Che / John D McCorvy / David N Kamber / James P Phelan / Luan Carvalho Martins / Vladimir M Pogorelov / Jeffrey F DiBerto / Samuel T Slocum / Xi-Ping Huang / Jain Manish Kumar / Michael J Robertson / Ouliana Panova / Alpay B Seven / Autumn Q Wetsel / William C Wetsel / John J Irwin / Georgios Skiniotis / Brian K Shoichet / Bryan L Roth / Jonathan A Ellman /
Abstract: There is considerable interest in screening ultralarge chemical libraries for ligand discovery, both empirically and computationally. Efforts have focused on readily synthesizable molecules, ...There is considerable interest in screening ultralarge chemical libraries for ligand discovery, both empirically and computationally. Efforts have focused on readily synthesizable molecules, inevitably leaving many chemotypes unexplored. Here we investigate structure-based docking of a bespoke virtual library of tetrahydropyridines-a scaffold that is poorly sampled by a general billion-molecule virtual library but is well suited to many aminergic G-protein-coupled receptors. Using three inputs, each with diverse available derivatives, a one pot C-H alkenylation, electrocyclization and reduction provides the tetrahydropyridine core with up to six sites of derivatization. Docking a virtual library of 75 million tetrahydropyridines against a model of the serotonin 5-HT receptor (5-HTR) led to the synthesis and testing of 17 initial molecules. Four of these molecules had low-micromolar activities against either the 5-HT or the 5-HT receptors. Structure-based optimization led to the 5-HTR agonists (R)-69 and (R)-70, with half-maximal effective concentration values of 41 nM and 110 nM, respectively, and unusual signalling kinetics that differ from psychedelic 5-HTR agonists. Cryo-electron microscopy structural analysis confirmed the predicted binding mode to 5-HTR. The favourable physical properties of these new agonists conferred high brain permeability, enabling mouse behavioural assays. Notably, neither had psychedelic activity, in contrast to classic 5-HTR agonists, whereas both had potent antidepressant activity in mouse models and had the same efficacy as antidepressants such as fluoxetine at as low as 1/40th of the dose. Prospects for using bespoke virtual libraries to sample pharmacologically relevant chemical space will be considered.
History
DepositionJul 2, 2021-
Header (metadata) releaseJul 6, 2022-
Map releaseJul 6, 2022-
UpdateNov 2, 2022-
Current statusNov 2, 2022Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_24378.png

Downloads & links

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Map

FileDownload / File: emd_24378.map.gz / Format: CCP4 / Size: 129.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationPost-processed map
Voxel sizeX=Y=Z: 0.8521 Å
Density
Contour LevelBy AUTHOR: 0.0165
Minimum - Maximum-0.067463875 - 0.11725463
Average (Standard dev.)6.984212e-05 (±0.0019176813)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions324324324
Spacing324324324
CellA=B=C: 276.0804 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : 5-HT2AR bound to a tetrahydropyridine agonist (R-69) in complex w...

EntireName: 5-HT2AR bound to a tetrahydropyridine agonist (R-69) in complex with heterotrimeric mini-Gq protein and single-chain variable fragment (scFv16)
Components
  • Complex: 5-HT2AR bound to a tetrahydropyridine agonist (R-69) in complex with heterotrimeric mini-Gq protein and single-chain variable fragment (scFv16)
    • Protein or peptide: 5-hydroxytryptamine receptor 2A
    • Protein or peptide: G protein subunit q (Gi2-mini-Gq chimera)
    • 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: single-chain variable fragment 16 (scFv16)
  • Ligand: (3R)-3-methyl-5-(1H-pyrrolo[2,3-b]pyridin-3-yl)-1,2,3,6-tetrahydropyridin-1-ium

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Supramolecule #1: 5-HT2AR bound to a tetrahydropyridine agonist (R-69) in complex w...

SupramoleculeName: 5-HT2AR bound to a tetrahydropyridine agonist (R-69) in complex with heterotrimeric mini-Gq protein and single-chain variable fragment (scFv16)
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)

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Macromolecule #1: 5-hydroxytryptamine receptor 2A

MacromoleculeName: 5-hydroxytryptamine receptor 2A / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 38.274285 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: LSLLHLQEKN WSALLTAVVI ILTIAGNILV IMAVSLEKKL QNATNYFLMS LAIADMLLGF LVMPVSMLTI LYGYRWPLPS KLCAVWIYL DVLFSTASIM HLCAISLDRY VAIQNPIHHS RFNSRTKAFL KIIAVWTISV GISMPIPVFG LQDDSKVFKE G SCLLADDN ...String:
LSLLHLQEKN WSALLTAVVI ILTIAGNILV IMAVSLEKKL QNATNYFLMS LAIADMLLGF LVMPVSMLTI LYGYRWPLPS KLCAVWIYL DVLFSTASIM HLCAISLDRY VAIQNPIHHS RFNSRTKAFL KIIAVWTISV GISMPIPVFG LQDDSKVFKE G SCLLADDN FVLIGSFVSF FIPLTIMVIT YFLTIKSLQK EATLCVSDLG TRAKLASFSF LPQSSLSSEK LFQRSIHREP GS YTGRRTM QSISNEQKAC KVLGIVFFLF VVMWCPFFIT NIMAVICKES CNEDVIGALL NVFVWIGYLS SAVNPLVYTL FNK TYRSAF SRYIQCQYKE NKK

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Macromolecule #2: G protein subunit q (Gi2-mini-Gq chimera)

MacromoleculeName: G protein subunit q (Gi2-mini-Gq chimera) / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 28.084832 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGSTVSAEDK AAAERSKMID KNLREDGEKA RRTLRLLLLG ADNSGKSTIV KQMRILHGGS GGSGGTSGIF ETKFQVDKVN FHMFDVGGQ RDERRKWIQC FNDVTAIIFV VDSSDYNRLQ EALNDFKSIW NNRWLRTISV ILFLNKQDLL AEKVLAGKSK I EDYFPEFA ...String:
MGSTVSAEDK AAAERSKMID KNLREDGEKA RRTLRLLLLG ADNSGKSTIV KQMRILHGGS GGSGGTSGIF ETKFQVDKVN FHMFDVGGQ RDERRKWIQC FNDVTAIIFV VDSSDYNRLQ EALNDFKSIW NNRWLRTISV ILFLNKQDLL AEKVLAGKSK I EDYFPEFA RYTTPEDATP EPGEDPRVTR AKYFIRKEFV DISTASGDGR HICYPHFTCA VDTENARRIF NDCKDIILQM NL REYNLV

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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: 37.41693 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL ...String:
MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD INAICFFPNG NA FATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAGHDNRVSC LGV TDDGMA VATGSWDSFL KIWN

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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: 7.861143 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

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Macromolecule #5: single-chain variable fragment 16 (scFv16)

MacromoleculeName: single-chain variable fragment 16 (scFv16) / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 30.552234 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MLLVNQSHQG FNKEHTSKMV SAIVLYVLLA AAAHSAFADV QLVESGGGLV QPGGSRKLSC SASGFAFSSF GMHWVRQAPE KGLEWVAYI SSGSGTIYYA DTVKGRFTIS RDDPKNTLFL QMTSLRSEDT AMYYCVRSIY YYGSSPFDFW GQGTTLTVSS G GGGSGGGG ...String:
MLLVNQSHQG FNKEHTSKMV SAIVLYVLLA AAAHSAFADV QLVESGGGLV QPGGSRKLSC SASGFAFSSF GMHWVRQAPE KGLEWVAYI SSGSGTIYYA DTVKGRFTIS RDDPKNTLFL QMTSLRSEDT AMYYCVRSIY YYGSSPFDFW GQGTTLTVSS G GGGSGGGG SGGGGSDIVM TQATSSVPVT PGESVSISCR SSKSLLHSNG NTYLYWFLQR PGQSPQLLIY RMSNLASGVP DR FSGSGSG TAFTLTISRL EAEDVGVYYC MQHLEYPLTF GAGTKLELK

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Macromolecule #6: (3R)-3-methyl-5-(1H-pyrrolo[2,3-b]pyridin-3-yl)-1,2,3,6-tetrahydr...

MacromoleculeName: (3R)-3-methyl-5-(1H-pyrrolo[2,3-b]pyridin-3-yl)-1,2,3,6-tetrahydropyridin-1-ium
type: ligand / ID: 6 / Number of copies: 1 / Formula: 3IQ
Molecular weightTheoretical: 214.286 Da
Chemical component information

ChemComp-3IQ:
(3R)-3-methyl-5-(1H-pyrrolo[2,3-b]pyridin-3-yl)-1,2,3,6-tetrahydropyridin-1-ium

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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

Concentration17.4 mg/mL
BufferpH: 7.5
GridModel: Quantifoil R1.2/1.3
VitrificationCryogen name: ETHANE / Instrument: FEI VITROBOT MARK II

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Calibrated magnification: 57050 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 60.01 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: RELION (ver. 3.1)
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

6wha

Initial angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: RELION / Software - details: 3.1
Final angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: RELION / Software - details: 3.1
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.45 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION / Software - details: 3.1 / Number images used: 88393
FSC plot (resolution estimation)

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