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- EMDB-21669: HTR2A bound to 25-CN-NBOH in complex with a mini-Galpha-q protein... -

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Entry
Database: EMDB / ID: EMD-21669
TitleHTR2A bound to 25-CN-NBOH in complex with a mini-Galpha-q protein, beta/gamma subunits and an active-state stabilizing single-chain variable fragment (scFv16) obtained by cryo-electron microscopy (cryoEM)
Map dataHTR2A bound to 25-CN-NBOH in complex with a mini-G%u237Aq protein, %u03B2/%uD835%uDEFE subunits and an active-state stabilizing single-chain variable fragment (scFv16) obtained by cryo-electron microscopy (cryoEM)
Sample
  • Complex: HTR2A bound to 25-CN-NBOH in complex with a mini-Galpha-q protein, beta/gamma subunits and an active-state stabilizing single-chain variable fragment (scFv16) obtained by cryo-electron microscopy (cryoEM)
    • Protein or peptide: Soluble cytochrome b562,5-hydroxytryptamine receptor 2A chimera
    • Protein or peptide: G subunit q (Gi2-mini-Gq chimeric)
    • 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 Fab chain (svFv16)
  • Ligand: 4-(2-{[(2-hydroxyphenyl)methyl]amino}ethyl)-2,5-dimethoxybenzonitrile
Keywords5HT2A / G protein / 25-CN-NBOH / GPCR / cryo-EM / MEMBRANE PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


positive regulation of heat generation / 1-(4-iodo-2,5-dimethoxyphenyl)propan-2-amine binding / Gq/11-coupled serotonin receptor activity / positive regulation of phosphatidylinositol biosynthetic process / G protein-coupled serotonin receptor signaling pathway / G protein-coupled serotonin receptor complex / neurofilament / cell body fiber / artery smooth muscle contraction / phospholipase C-activating serotonin receptor signaling pathway ...positive regulation of heat generation / 1-(4-iodo-2,5-dimethoxyphenyl)propan-2-amine binding / Gq/11-coupled serotonin receptor activity / positive regulation of phosphatidylinositol biosynthetic process / G protein-coupled serotonin receptor signaling pathway / G protein-coupled serotonin receptor complex / neurofilament / cell body fiber / artery smooth muscle contraction / phospholipase C-activating serotonin receptor signaling pathway / serotonin receptor activity / positive regulation of cytokine production involved in immune response / Serotonin receptors / G protein-coupled serotonin receptor activity / serotonin receptor signaling pathway / urinary bladder smooth muscle contraction / sensitization / neurotransmitter receptor activity / serotonin binding / positive regulation of platelet aggregation / negative regulation of synaptic transmission, glutamatergic / positive regulation of DNA biosynthetic process / negative regulation of potassium ion transport / temperature homeostasis / detection of temperature stimulus involved in sensory perception of pain / regulation of dopamine secretion / protein tyrosine kinase activator activity / detection of mechanical stimulus involved in sensory perception of pain / positive regulation of vasoconstriction / positive regulation of execution phase of apoptosis / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / release of sequestered calcium ion into cytosol / behavioral response to cocaine / presynaptic modulation of chemical synaptic transmission / dendritic shaft / electron transport chain / memory / caveola / intracellular calcium ion homeostasis / positive regulation of inflammatory response / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / 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 / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / G beta:gamma signalling through BTK / photoreceptor disc membrane / positive regulation of neuron apoptotic process / ADP signalling through P2Y purinoceptor 12 / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / ADORA2B mediated anti-inflammatory cytokines production / adenylate cyclase-activating dopamine receptor signaling pathway / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / heterotrimeric G-protein complex / Inactivation, recovery and regulation of the phototransduction cascade / G alpha (12/13) signalling events / G-protein beta-subunit binding / positive regulation of cytosolic calcium ion concentration / extracellular vesicle / Thrombin signalling through proteinase activated receptors (PARs) / virus receptor activity / signaling receptor complex adaptor activity / GTPase binding / presynaptic membrane / cytoplasmic vesicle / chemical synaptic transmission / Ca2+ pathway / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / G alpha (q) signalling events / Ras protein signal transduction / positive regulation of ERK1 and ERK2 cascade / electron transfer activity / periplasmic space / postsynaptic membrane / Extra-nuclear estrogen signaling / response to xenobiotic stimulus / iron ion binding / G protein-coupled receptor signaling pathway / axon / lysosomal membrane
Similarity search - Function
5-Hydroxytryptamine 2A receptor / 5-hydroxytryptamine receptor family / Cytochrome b562 / Cytochrome b562 / Cytochrome c/b562 / Serpentine type 7TM GPCR chemoreceptor Srsx / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily ...5-Hydroxytryptamine 2A receptor / 5-hydroxytryptamine receptor family / Cytochrome b562 / Cytochrome b562 / Cytochrome c/b562 / Serpentine type 7TM GPCR chemoreceptor Srsx / 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
Similarity search - Domain/homology
Soluble cytochrome b562 / 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: 3.36 Å
AuthorsSkiniotis G / Roth B
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)R37 DA045657 United States
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)RO1 MH112205 United States
CitationJournal: Cell / Year: 2020
Title: Structure of a Hallucinogen-Activated Gq-Coupled 5-HT Serotonin Receptor.
Authors: Kuglae Kim / Tao Che / Ouliana Panova / Jeffrey F DiBerto / Jiankun Lyu / Brian E Krumm / Daniel Wacker / Michael J Robertson / Alpay B Seven / David E Nichols / Brian K Shoichet / Georgios ...Authors: Kuglae Kim / Tao Che / Ouliana Panova / Jeffrey F DiBerto / Jiankun Lyu / Brian E Krumm / Daniel Wacker / Michael J Robertson / Alpay B Seven / David E Nichols / Brian K Shoichet / Georgios Skiniotis / Bryan L Roth /
Abstract: Hallucinogens like lysergic acid diethylamide (LSD), psilocybin, and substituted N-benzyl phenylalkylamines are widely used recreationally with psilocybin being considered as a therapeutic for many ...Hallucinogens like lysergic acid diethylamide (LSD), psilocybin, and substituted N-benzyl phenylalkylamines are widely used recreationally with psilocybin being considered as a therapeutic for many neuropsychiatric disorders including depression, anxiety, and substance abuse. How psychedelics mediate their actions-both therapeutic and hallucinogenic-are not understood, although activation of the 5-HT serotonin receptor (HTR2A) is key. To gain molecular insights into psychedelic actions, we determined the active-state structure of HTR2A bound to 25-CN-NBOH-a prototypical hallucinogen-in complex with an engineered Gαq heterotrimer by cryoelectron microscopy (cryo-EM). We also obtained the X-ray crystal structures of HTR2A complexed with the arrestin-biased ligand LSD or the inverse agonist methiothepin. Comparisons of these structures reveal determinants responsible for HTR2A-Gαq protein interactions as well as the conformational rearrangements involved in active-state transitions. Given the potential therapeutic actions of hallucinogens, these findings could accelerate the discovery of more selective drugs for the treatment of a variety of neuropsychiatric disorders.
History
DepositionApr 7, 2020-
Header (metadata) releaseSep 23, 2020-
Map releaseSep 23, 2020-
UpdateNov 20, 2024-
Current statusNov 20, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.02
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  • Surface view colored by height
  • Surface level: 0.02
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  • Surface view with fitted model
  • Atomic models: PDB-6wha
  • Surface level: 0.02
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Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_21669.png

Downloads & links

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Map

FileDownload / File: emd_21669.map.gz / Format: CCP4 / Size: 28.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationHTR2A bound to 25-CN-NBOH in complex with a mini-G%u237Aq protein, %u03B2/%uD835%uDEFE subunits and an active-state stabilizing single-chain variable fragment (scFv16) obtained by cryo-electron microscopy (cryoEM)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.85 Å/pix.
x 196 pix.
= 167.012 Å		0.85 Å/pix.
x 196 pix.
= 167.012 Å		0.85 Å/pix.
x 196 pix.
= 167.012 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.8521 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.0164 / Movie #1: 0.02
Minimum - Maximum-0.06648667 - 0.11577206
Average (Standard dev.)0.00040480538 (±0.0045306403)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions196196196
Spacing196196196
CellA=B=C: 167.0116 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.852102040816330.852102040816330.85210204081633
M x/y/z196196196
origin x/y/z0.0000.0000.000
length x/y/z167.012167.012167.012
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ400400400
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS196196196
D min/max/mean-0.0660.1160.000

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Supplemental data

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Sample components

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Entire : HTR2A bound to 25-CN-NBOH in complex with a mini-Galpha-q protein...

EntireName: HTR2A bound to 25-CN-NBOH in complex with a mini-Galpha-q protein, beta/gamma subunits and an active-state stabilizing single-chain variable fragment (scFv16) obtained by cryo-electron microscopy (cryoEM)
Components
  • Complex: HTR2A bound to 25-CN-NBOH in complex with a mini-Galpha-q protein, beta/gamma subunits and an active-state stabilizing single-chain variable fragment (scFv16) obtained by cryo-electron microscopy (cryoEM)
    • Protein or peptide: Soluble cytochrome b562,5-hydroxytryptamine receptor 2A chimera
    • Protein or peptide: G subunit q (Gi2-mini-Gq chimeric)
    • 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 Fab chain (svFv16)
  • Ligand: 4-(2-{[(2-hydroxyphenyl)methyl]amino}ethyl)-2,5-dimethoxybenzonitrile

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Supramolecule #1: HTR2A bound to 25-CN-NBOH in complex with a mini-Galpha-q protein...

SupramoleculeName: HTR2A bound to 25-CN-NBOH in complex with a mini-Galpha-q protein, beta/gamma subunits and an active-state stabilizing single-chain variable fragment (scFv16) obtained by cryo-electron microscopy (cryoEM)
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Soluble cytochrome b562,5-hydroxytryptamine receptor 2A chimera

MacromoleculeName: Soluble cytochrome b562,5-hydroxytryptamine receptor 2A chimera
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 56.167309 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MKTIIALSYI FCLVFADYKD DDDAKLQTMH HHHHHHHHHE NLYFQGGTTM ADLEDNWETL NDNLKVIEKA DNAAQVKDAL TKMRAAALD AQKATPPKLE DKSPDSPEMK DFRHGFDILV GQIDDALKLA NEGKVKEAQA AAEQLKTTRN AYIQKYLGSL S LLHLQEKN ...String:
MKTIIALSYI FCLVFADYKD DDDAKLQTMH HHHHHHHHHE NLYFQGGTTM ADLEDNWETL NDNLKVIEKA DNAAQVKDAL TKMRAAALD AQKATPPKLE DKSPDSPEMK DFRHGFDILV GQIDDALKLA NEGKVKEAQA AAEQLKTTRN AYIQKYLGSL S LLHLQEKN WSALLTAVVI ILTIAGNILV IMAVSLEKKL QNATNYFLMS LAIADMLLGF LVMPVSMLTI LYGYRWPLPS KL CAVWIYL DVLFSTASIM HLCAISLDRY VAIQNPIHHS RFNSRTKAFL KIIAVWTISV GISMPIPVFG LQDDSKVFKE GSC LLADDN FVLIGSFVSF FIPLTIMVIT YFLTIKSLQK EATLCVSDLG TRAKLASFSF LPQSSLSSEK LFQRSIHREP GSYT GRRTM QSISNEQKAC KVLGIVFFLF VVMWCPFFIT NIMAVICKES CNEDVIGALL NVFVWIGYLS SAVNPLVYTL FNKTY RSAF SRYIQCQYKE NKK

UniProtKB: Soluble cytochrome b562, 5-hydroxytryptamine receptor 2A

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

MacromoleculeName: G subunit q (Gi2-mini-Gq chimeric) / 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: 39.418086 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR ...String:
MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR FLDDNQIVTS SGDTTCALWD IETGQQTTTF TGHTGDVMSL SLAPDTRLFV SGACDASAKL WDVREGMCRQ TF TGHESDI NAICFFPNGN AFATGSDDAT CRLFDLRADQ ELMTYSHDNI ICGITSVSFS KSGRLLLAGY DDFNCNVWDA LKA DRAGVL AGHDNRVSCL GVTDDGMAVA TGSWDSFLKI WN

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: 7.861143 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
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 #5: single Fab chain (svFv16)

MacromoleculeName: single Fab chain (svFv16) / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 28.668922 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS ...String:
DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS NGNTYLYWFL QRPGQSPQLL IYRMSNLASG VPDRFSGSGS GTAFTLTISR LEAEDVGVYY CMQHLEYPLT FG AGTKLEL KAAALEVLFQ GPHHHHHHHH

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Macromolecule #6: 4-(2-{[(2-hydroxyphenyl)methyl]amino}ethyl)-2,5-dimethoxybenzonitrile

MacromoleculeName: 4-(2-{[(2-hydroxyphenyl)methyl]amino}ethyl)-2,5-dimethoxybenzonitrile
type: ligand / ID: 6 / Number of copies: 1 / Formula: U0G
Molecular weightTheoretical: 312.363 Da
Chemical component information

ChemComp-U0G:
4-(2-{[(2-hydroxyphenyl)methyl]amino}ethyl)-2,5-dimethoxybenzonitrile

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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

Concentration16.7 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormula
20.0 mMHEPES
100.0 mMNaCl
0.001 %LMNG
0.0001 %CHS
0.00025 %GDN
100.0 uMTCEP
1.0 mMMgCl2
10.0 uMGDP
GridModel: Quantifoil R1.2/1.3 / Material: GOLD / Support film - Material: CARBON / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 50 sec.
VitrificationCryogen name: ETHANE / Instrument: FEI VITROBOT MARK II

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Number real images: 2368 / Average exposure time: 4.0 sec. / Average electron dose: 80.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Calibrated defocus max: 2.5 µm / Calibrated defocus min: 1.0 µm / Calibrated magnification: 57050 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 2712613
Startup modelType of model: INSILICO MODEL
Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.36 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 166497
Initial angle assignmentType: OTHER
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final 3D classificationNumber classes: 3

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