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- EMDB-33446: Serotonin 7 (5-HT7) receptor-Gs-Nb35 complex -

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Basic information

Entry
Database: EMDB / ID: EMD-33446
TitleSerotonin 7 (5-HT7) receptor-Gs-Nb35 complex
Map data
Sample
  • Complex: Serotonin 7 (5-HT7) receptor-Gs-Nb35 complex
    • Protein or peptide: 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: Nanobody35
    • Protein or peptide: Soluble cytochrome b562,5-hydroxytryptamine receptor 7
  • Ligand: 3-(2-azanylethyl)-1H-indole-5-carboxamide
  • Ligand: CHOLESTEROL
Function / homology
Function and homology information


Serotonin receptors / RHOBTB3 ATPase cycle / vasoconstriction / G protein-coupled serotonin receptor activity / neurotransmitter receptor activity / blood circulation / plasma membrane => GO:0005886 / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / PKA activation in glucagon signalling / hair follicle placode formation ...Serotonin receptors / RHOBTB3 ATPase cycle / vasoconstriction / G protein-coupled serotonin receptor activity / neurotransmitter receptor activity / blood circulation / plasma membrane => GO:0005886 / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / PKA activation in glucagon signalling / hair follicle placode formation / smooth muscle contraction / developmental growth / D1 dopamine receptor binding / intracellular transport / Hedgehog 'off' state / positive regulation of cAMP-mediated signaling / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / adenylate cyclase activator activity / trans-Golgi network membrane / Olfactory Signaling Pathway / G-protein beta/gamma-subunit complex binding / Activation of the phototransduction cascade / bone development / 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 / adenylate cyclase-activating G protein-coupled receptor signaling pathway / 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 / platelet aggregation / photoreceptor disc membrane / cognition / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / positive regulation of GTPase activity / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / circadian rhythm / 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 / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / sensory perception of smell / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / retina development in camera-type eye / GTPase binding / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / positive regulation of cold-induced thermogenesis / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / chemical synaptic transmission / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / electron transfer activity / periplasmic space / iron ion binding / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / dendrite / synapse / heme binding / protein-containing complex binding / GTP binding / signal transduction / extracellular exosome / membrane / metal ion binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
5-Hydroxytryptamine 7 receptor / Cytochrome b562 / Cytochrome b562 / G-protein alpha subunit, group S / Cytochrome c/b562 / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit ...5-Hydroxytryptamine 7 receptor / Cytochrome b562 / Cytochrome b562 / G-protein alpha subunit, group S / Cytochrome c/b562 / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / 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 / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Soluble cytochrome b562 / 5-hydroxytryptamine receptor 7 / 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) / Lama glama (llama)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsHuang S / Xu P / Shen DD / Simon IA / Mao C / Tan Y / Zhang H / Harpsoe K / Li H / Zhang Y ...Huang S / Xu P / Shen DD / Simon IA / Mao C / Tan Y / Zhang H / Harpsoe K / Li H / Zhang Y / You C / Yu X / Jiang Y / Gloriam DE / Xu HE
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31770796 China
CitationJournal: Mol Cell / Year: 2022
Title: GPCRs steer G and G selectivity via TM5-TM6 switches as revealed by structures of serotonin receptors.
Authors: Sijie Huang / Peiyu Xu / Dan-Dan Shen / Icaro A Simon / Chunyou Mao / Yangxia Tan / Huibing Zhang / Kasper Harpsøe / Huadong Li / Yumu Zhang / Chongzhao You / Xuekui Yu / Yi Jiang / Yan ...Authors: Sijie Huang / Peiyu Xu / Dan-Dan Shen / Icaro A Simon / Chunyou Mao / Yangxia Tan / Huibing Zhang / Kasper Harpsøe / Huadong Li / Yumu Zhang / Chongzhao You / Xuekui Yu / Yi Jiang / Yan Zhang / David E Gloriam / H Eric Xu /
Abstract: Serotonin (or 5-hydroxytryptamine, 5-HT) is an important neurotransmitter that activates 12 different G protein-coupled receptors (GPCRs) through selective coupling of G, G or G proteins. The ...Serotonin (or 5-hydroxytryptamine, 5-HT) is an important neurotransmitter that activates 12 different G protein-coupled receptors (GPCRs) through selective coupling of G, G or G proteins. The structural basis for G protein subtype selectivity by these GPCRs remains elusive. Here, we report the structures of the serotonin receptors 5-HT, 5-HT, and 5-HT with G, and 5-HT with G. The structures reveal that transmembrane helices TM5 and TM6 alternate lengths as a macro-switch to determine receptor's selectivity for G and G, respectively. We find that the macro-switch by the TM5-TM6 length is shared by class A GPCR-G protein structures. Furthermore, we discover specific residues within TM5 and TM6 that function as micro-switches to form specific interactions with G or G. Together, these results present a common mechanism of G versus G protein coupling selectivity or promiscuity by class A GPCRs and extend the basis of ligand recognition at serotonin receptors.
History
DepositionMay 16, 2022-
Header (metadata) releaseJul 27, 2022-
Map releaseJul 27, 2022-
UpdateAug 3, 2022-
Current statusAug 3, 2022Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_33446.png

Downloads & links

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Map

FileDownload / File: emd_33446.map.gz / Format: CCP4 / Size: 27 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.014 Å
Density
Contour LevelBy AUTHOR: 0.03
Minimum - Maximum-0.14912309 - 0.21241178
Average (Standard dev.)-0.00016492294 (±0.007574138)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions192192192
Spacing192192192
CellA=B=C: 194.68802 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #1

Fileemd_33446_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_33446_half_map_2.map
Projections & Slices
AxesZYX

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Slices (1/2)
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Histogram

Histogram (log scale)

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Sample components

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Entire : Serotonin 7 (5-HT7) receptor-Gs-Nb35 complex

EntireName: Serotonin 7 (5-HT7) receptor-Gs-Nb35 complex
Components
  • Complex: Serotonin 7 (5-HT7) receptor-Gs-Nb35 complex
    • Protein or peptide: 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: Nanobody35
    • Protein or peptide: Soluble cytochrome b562,5-hydroxytryptamine receptor 7
  • Ligand: 3-(2-azanylethyl)-1H-indole-5-carboxamide
  • Ligand: CHOLESTEROL

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Supramolecule #1: Serotonin 7 (5-HT7) receptor-Gs-Nb35 complex

SupramoleculeName: Serotonin 7 (5-HT7) receptor-Gs-Nb35 complex / type: complex / Chimera: Yes / 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: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

MacromoleculeName: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 45.683434 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKNTIVKQM RILHVNGFNG EGGEEDPQAA RSNSDGEKA TKVQDIKNNL KEAIETIVAA MSNLVPPVEL ANPENQFRVD YILSVMNVPD FDFPPEFYEH AKALWEDEGV R ACYERSNE ...String:
MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKNTIVKQM RILHVNGFNG EGGEEDPQAA RSNSDGEKA TKVQDIKNNL KEAIETIVAA MSNLVPPVEL ANPENQFRVD YILSVMNVPD FDFPPEFYEH AKALWEDEGV R ACYERSNE YQLIDCAQYF LDKIDVIKQA DYVPSDQDLL RCRVLTSGIF ETKFQVDKVN FHMFDVGAQR DERRKWIQCF ND VTAIIFV VASSSYNMVI REDNQTNRLQ AALKLFDSIW NNKWLRDTSV ILFLNKQDLL AEKVLAGKSK IEDYFPEFAR YTT PEDATP EPGEDPRVTR AKYFIRDEFL RISTASGDGR HYCYPHFTCA VDTENIRRVF NDCRDIIQRM HLRQYELL

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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: 37.915496 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGSLLQSELD QLRQEAEQLK NQIRDARKAC ADATLSQITN NIDPVGRIQM RTRRTLRGHL AKIYAMHWGT DSRLLVSASQ DGKLIIWDS YTTNKVHAIP LRSSWVMTCA YAPSGNYVAC GGLDNICSIY NLKTREGNVR VSRELAGHTG YLSCCRFLDD N QIVTSSGD ...String:
MGSLLQSELD QLRQEAEQLK NQIRDARKAC ADATLSQITN NIDPVGRIQM RTRRTLRGHL AKIYAMHWGT DSRLLVSASQ DGKLIIWDS YTTNKVHAIP LRSSWVMTCA YAPSGNYVAC GGLDNICSIY NLKTREGNVR VSRELAGHTG YLSCCRFLDD N QIVTSSGD TTCALWDIET GQQTTTFTGH TGDVMSLSLA PDTRLFVSGA CDASAKLWDV REGMCRQTFT GHESDINAIC FF PNGNAFA TGSDDATCRL FDLRADQELM TYSHDNIICG ITSVSFSKSG RLLLAGYDDF NCNVWDALKA DRAGVLAGHD NRV SCLGVT DDGMAVATGS WDSFLKIWN

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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: Nanobody35

MacromoleculeName: Nanobody35 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 15.271938 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MQVQLQESGG GLVQPGGSLR LSCAASGFTF SNYKMNWVRQ APGKGLEWVS DISQSGASIS YTGSVKGRFT ISRDNAKNTL YLQMNSLKP EDTAVYYCAR CPAPFTRDCF DVTSTTYAYR GQGTQVTVSS HHHHHHEPEA

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Macromolecule #5: Soluble cytochrome b562,5-hydroxytryptamine receptor 7

MacromoleculeName: Soluble cytochrome b562,5-hydroxytryptamine receptor 7
type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 64.449277 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: DYKDDDDAKL QTMHHHHHHH HHHHHHHHAD LEDNWETLND NLKVIEKADN AAQVKDALTK MRAAALDAQK ATPPKLEDKS PDSPEMKDF RHGFDILVGQ IDDALKLANE GKVKEAQAAA EQLKTTRNAY IQKYLASENL YFQGGTMDVN SSGRPDLYGH L RSFLLPEV ...String:
DYKDDDDAKL QTMHHHHHHH HHHHHHHHAD LEDNWETLND NLKVIEKADN AAQVKDALTK MRAAALDAQK ATPPKLEDKS PDSPEMKDF RHGFDILVGQ IDDALKLANE GKVKEAQAAA EQLKTTRNAY IQKYLASENL YFQGGTMDVN SSGRPDLYGH L RSFLLPEV GRGLPDLSPD GGADPVAGSW APHLLSEVTA SPAPTWDAPP DNASGCGEQI NYGRVEKVVI GSILTLITLL TI AGNCLVV ISVCFVKKLR QPSNYLIVSL ALADLSVAVA VMPFVSVTDL IGGKWIFGHF FCNVFIAMDV MCCTASIMTL CVI SIDRYL GITRPLTYPV RQNGKCMAKM ILSVWLLSAS ITLPPLFGWA QNVNDDKVCL ISQDFGYTIY STAVAFYIPM SVML FMYYQ IYKAARKSAA KHKFPGFPRV EPDSVIALNG IVKLQKEVEE CANLSRLLKH ERKNISIFKR EQKAATTLGI IVGAF TVCW LPFFLLSTAR PFICGTSCSC IPLWVERTFL WLGYANSLIN PFIYAFFNRD LRTTYRSLLQ CQYRNINRKL SAAGMH EAL KLAERPERPE FVL

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Macromolecule #6: 3-(2-azanylethyl)-1H-indole-5-carboxamide

MacromoleculeName: 3-(2-azanylethyl)-1H-indole-5-carboxamide / type: ligand / ID: 6 / Number of copies: 1 / Formula: 8K3
Molecular weightTheoretical: 203.24 Da
Chemical component information

ChemComp-8K3:
3-(2-azanylethyl)-1H-indole-5-carboxamide / neurotransmitter, agonist*YM / 5-Carboxamidotryptamine

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Macromolecule #7: CHOLESTEROL

MacromoleculeName: CHOLESTEROL / type: ligand / ID: 7 / Number of copies: 1 / Formula: CLR
Molecular weightTheoretical: 386.654 Da
Chemical component information

ChemComp-CLR:
CHOLESTEROL / Cholesterol

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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

BufferpH: 7.4
VitrificationCryogen name: ETHANE-PROPANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.0 µm
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 64.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: RANDOM ASSIGNMENT
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 88238

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