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- EMDB-25402: 5-HT2B receptor bound to LSD in complex with heterotrimeric mini-... -

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Basic information

Entry
Database: EMDB / ID: EMD-25402
Title5-HT2B receptor bound to LSD in complex with heterotrimeric mini-Gq protein obtained by cryo-electron microscopy (cryoEM)
Map dataComposite cryo-EM map for 5-HT2BR bound to LSD in complex with heterotrimeric mini-Gq
Sample
  • Complex: 5-HT2B receptor bound to LSD in complex with heterotrimeric mini-Gq protein and single-chain variable fragment (scFv16)
    • 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)
    • Protein or peptide: 5-hydroxytryptamine receptor 2B
  • Ligand: (8alpha)-N,N-diethyl-6-methyl-9,10-didehydroergoline-8-carboxamide
Function / homology
Function and homology information


behavior / intestine smooth muscle contraction / 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 / protein kinase C signaling / regulation of behavior / Serotonin receptors ...behavior / intestine smooth muscle contraction / 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 / protein kinase C signaling / regulation of behavior / Serotonin receptors / embryonic morphogenesis / cellular response to temperature stimulus / serotonin binding / vasoconstriction / protein kinase C-activating G protein-coupled receptor signaling pathway / G protein-coupled serotonin receptor activity / G protein-coupled receptor internalization / cardiac muscle hypertrophy / neural crest cell differentiation / neural crest cell migration / neurotransmitter receptor activity / cGMP-mediated signaling / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / positive regulation of cell division / : / G-protein alpha-subunit binding / heart morphogenesis / release of sequestered calcium ion into cytosol / positive regulation of endothelial cell proliferation / ERK1 and ERK2 cascade / GTPase activator activity / phosphatidylinositol 3-kinase/protein kinase B signal transduction / positive regulation of nitric-oxide synthase activity / positive regulation of cytokine production / calcium-mediated signaling / positive regulation of MAP kinase activity / 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 / 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 / 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 / intracellular calcium ion homeostasis / 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 / 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 / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / phospholipase C-activating G protein-coupled receptor signaling pathway / Ca2+ pathway / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / chemical synaptic transmission / positive regulation of canonical NF-kappaB signal transduction / cell population proliferation / Ras protein signal transduction / Extra-nuclear estrogen signaling / positive regulation of ERK1 and ERK2 cascade / response to xenobiotic stimulus / G protein-coupled receptor signaling pathway / phosphorylation / lysosomal membrane / GTPase activity / synapse / dendrite / positive regulation of cell population proliferation / protein-containing complex binding / negative regulation of apoptotic process / signal transduction
Similarity search - Function
5-Hydroxytryptamine 2B 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 2B 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. / 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
Similarity search - Domain/homology
5-hydroxytryptamine receptor 2B / 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: 2.9 Å
AuthorsBarros-Alvarez X / Kim K / Panova O / Cao C / Roth BL / Skiniotis G
Funding support1 items
OrganizationGrant numberCountry
Other government
CitationJournal: Neuron / Year: 2022
Title: Signaling snapshots of a serotonin receptor activated by the prototypical psychedelic LSD.
Authors: Can Cao / Ximena Barros-Álvarez / Shicheng Zhang / Kuglae Kim / Marc A Dämgen / Ouliana Panova / Carl-Mikael Suomivuori / Jonathan F Fay / Xiaofang Zhong / Brian E Krumm / Ryan H Gumpper / ...Authors: Can Cao / Ximena Barros-Álvarez / Shicheng Zhang / Kuglae Kim / Marc A Dämgen / Ouliana Panova / Carl-Mikael Suomivuori / Jonathan F Fay / Xiaofang Zhong / Brian E Krumm / Ryan H Gumpper / Alpay B Seven / Michael J Robertson / Nevan J Krogan / Ruth Hüttenhain / David E Nichols / Ron O Dror / Georgios Skiniotis / Bryan L Roth /
Abstract: Serotonin (5-hydroxytryptamine [5-HT]) 5-HT2-family receptors represent essential targets for lysergic acid diethylamide (LSD) and all other psychedelic drugs. Although the primary psychedelic drug ...Serotonin (5-hydroxytryptamine [5-HT]) 5-HT2-family receptors represent essential targets for lysergic acid diethylamide (LSD) and all other psychedelic drugs. Although the primary psychedelic drug effects are mediated by the 5-HT serotonin receptor (HTR2A), the 5-HT serotonin receptor (HTR2B) has been used as a model receptor to study the activation mechanisms of psychedelic drugs due to its high expression and similarity to HTR2A. In this study, we determined the cryo-EM structures of LSD-bound HTR2B in the transducer-free, Gq-protein-coupled, and β-arrestin-1-coupled states. These structures provide distinct signaling snapshots of LSD's action, ranging from the transducer-free, partially active state to the transducer-coupled, fully active states. Insights from this study will both provide comprehensive molecular insights into the signaling mechanisms of the prototypical psychedelic LSD and accelerate the discovery of novel psychedelic drugs.
History
DepositionNov 8, 2021-
Header (metadata) releaseSep 21, 2022-
Map releaseSep 21, 2022-
UpdateOct 19, 2022-
Current statusOct 19, 2022Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_25402.png

Downloads & links

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Map

FileDownload / File: emd_25402.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationComposite cryo-EM map for 5-HT2BR bound to LSD in complex with heterotrimeric mini-Gq
Voxel sizeX=Y=Z: 0.8677 Å
Density
Contour LevelBy AUTHOR: 0.15
Minimum - Maximum-0.04299454 - 2.6528993
Average (Standard dev.)0.00090877607 (±0.019151883)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 312.37198 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: Focused refinement map for 5-HT2BR bound to LSD

Fileemd_25402_additional_1.map
AnnotationFocused refinement map for 5-HT2BR bound to LSD
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: Focused refinement map for heterotrimeric mini-Gq

Fileemd_25402_additional_2.map
AnnotationFocused refinement map for heterotrimeric mini-Gq
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : 5-HT2B receptor bound to LSD in complex with heterotrimeric mini-...

EntireName: 5-HT2B receptor bound to LSD in complex with heterotrimeric mini-Gq protein and single-chain variable fragment (scFv16)
Components
  • Complex: 5-HT2B receptor bound to LSD in complex with heterotrimeric mini-Gq protein and single-chain variable fragment (scFv16)
    • 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)
    • Protein or peptide: 5-hydroxytryptamine receptor 2B
  • Ligand: (8alpha)-N,N-diethyl-6-methyl-9,10-didehydroergoline-8-carboxamide

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Supramolecule #1: 5-HT2B receptor bound to LSD in complex with heterotrimeric mini-...

SupramoleculeName: 5-HT2B receptor bound to LSD 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: G protein subunit q (Gi2-mini-Gq chimera)

MacromoleculeName: G protein subunit q (Gi2-mini-Gq chimera) / type: protein_or_peptide / ID: 1 / 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 #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: 37.41693 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 #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: Spodoptera frugiperda (fall armyworm)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

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Macromolecule #4: single-chain variable fragment 16 (scFv16)

MacromoleculeName: single-chain variable fragment 16 (scFv16) / type: protein_or_peptide / ID: 4 / 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 #5: 5-hydroxytryptamine receptor 2B

MacromoleculeName: 5-hydroxytryptamine receptor 2B / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 41.670207 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: TESIPEEMKQ IVEEQGNKLH WAALLILMVI IPTIGGNTLV ILAVSLEKKL QYATNYFLMS LAVADLLVGL FVMPIALLTI MFEAMWPLP LVLCPAWLFL DVLFSTASIW HLCAISVDRY IAIKKPIQAN QYNSRATAFI KITVVWLISI GIAIPVPIKG I ETDVDNPN ...String:
TESIPEEMKQ IVEEQGNKLH WAALLILMVI IPTIGGNTLV ILAVSLEKKL QYATNYFLMS LAVADLLVGL FVMPIALLTI MFEAMWPLP LVLCPAWLFL DVLFSTASIW HLCAISVDRY IAIKKPIQAN QYNSRATAFI KITVVWLISI GIAIPVPIKG I ETDVDNPN NITCVLTKER FGDFMLFGSL AAFFTPLAIM IVTYFLTIHA LQKKAYLVKN KPPQRLTWLT VSTVFQRDET PC SSPEKVA MLDGSRKDKA LPNSGDETLM RRTSTIGKKS VQTISNEQRA SKVLGIVFFL FLLMWCPFFI TNITLVLCDS CNQ TTLQML LEIFVWIGYV SSGVNPLVYT LFNKTFRDAF GRYITCNYRA TKSV

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Macromolecule #6: (8alpha)-N,N-diethyl-6-methyl-9,10-didehydroergoline-8-carboxamide

MacromoleculeName: (8alpha)-N,N-diethyl-6-methyl-9,10-didehydroergoline-8-carboxamide
type: ligand / ID: 6 / Number of copies: 1 / Formula: 7LD
Molecular weightTheoretical: 323.432 Da
Chemical component information

ChemComp-7LD:
(8alpha)-N,N-diethyl-6-methyl-9,10-didehydroergoline-8-carboxamide

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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

Concentration8.5 mg/mL
BufferpH: 7.5
GridModel: UltrAuFoil R1.2/1.3
VitrificationCryogen name: ETHANE / 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) / Average electron dose: 1.07 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Calibrated magnification: 55000 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.8 µm / Nominal defocus min: 0.8 µm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 3214021
CTF correctionSoftware - Name: cryoSPARC (ver. 3.2)
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 3.2) / Number images used: 772614
Initial angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC (ver. 3.2)
Final angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC (ver. 3.2)

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