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Open data
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Basic information
| Entry | ![]() | |||||||||
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| Title | Serotonin 5A (5-HT5A) receptor-Gi protein complex | |||||||||
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Keywords | Serotonin / 5-HT / GPCR / Gi / 5-CT / MEMBRANE PROTEIN | |||||||||
| Function / homology | Function and homology informationGi/o-coupled serotonin receptor activity / Serotonin receptors / serotonin receptor activity / G protein-coupled serotonin receptor activity / neurotransmitter receptor activity / postsynaptic specialization membrane / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration ...Gi/o-coupled serotonin receptor activity / Serotonin receptors / serotonin receptor activity / G protein-coupled serotonin receptor activity / neurotransmitter receptor activity / postsynaptic specialization membrane / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / response to prostaglandin E / G protein-coupled serotonin receptor binding / adenylate cyclase regulator activity / adenylate cyclase-inhibiting serotonin receptor signaling pathway / cellular response to forskolin / regulation of mitotic spindle organization / hippocampus development / Regulation of insulin secretion / positive regulation of cholesterol biosynthetic process / electron transport chain / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / centriolar satellite / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / adenylate cyclase-activating G protein-coupled receptor 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-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / photoreceptor disc membrane / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / GDP binding / 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 / ADP signalling through P2Y purinoceptor 1 / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / response to estradiol / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / G-protein beta-subunit binding / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / sensory perception of taste / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / G protein activity / retina development in camera-type eye / GTPase binding / Ca2+ pathway / fibroblast proliferation / midbody / cell cortex / 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 / perikaryon / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / chemical synaptic transmission / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / Ras protein signal transduction / electron transfer activity / periplasmic space / Extra-nuclear estrogen signaling / cell population proliferation / ciliary basal body / iron ion binding / G protein-coupled receptor signaling pathway / lysosomal membrane / cell division / GTPase activity / heme binding / dendrite / synapse / centrosome Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) / ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
Authors | Tan Y / Xu P / Huang S / Xu HE / Jiang Y | |||||||||
| Funding support | China, 1 items
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Citation | Journal: Cell Discov / Year: 2022Title: Structural insights into the ligand binding and G coupling of serotonin receptor 5-HT. Authors: Yangxia Tan / Peiyu Xu / Sijie Huang / Gong Yang / Fulai Zhou / Xinheng He / Honglei Ma / H Eric Xu / Yi Jiang / ![]() Abstract: 5-hydroxytryptamine receptor 5A (5-HT) belongs to the 5-HT receptor family and signals through the G protein. It is involved in nervous system regulation and an attractive target for the treatment of ...5-hydroxytryptamine receptor 5A (5-HT) belongs to the 5-HT receptor family and signals through the G protein. It is involved in nervous system regulation and an attractive target for the treatment of psychosis, depression, schizophrenia, and neuropathic pain. 5-HT is the only G-coupled 5-HT receptor subtype lacking a high-resolution structure, which hampers the mechanistic understanding of ligand binding and G coupling for 5-HT. Here we report a cryo-electron microscopy structure of the 5-HT-G complex bound to 5-Carboxamidotryptamine (5-CT). Combined with functional analysis, this structure reveals the 5-CT recognition mechanism and identifies the receptor residue at 6.55 as a determinant of the 5-CT selectivity for G-coupled 5-HT receptors. In addition, 5-HT shows an overall conserved G protein coupling mode compared with other G-coupled 5-HT receptors. These findings provide comprehensive insights into the ligand binding and G protein coupling of G-coupled 5-HT receptors and offer a template for the design of 5-HT-selective drugs. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_33014.map.gz | 28.7 MB | EMDB map data format | |
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| Header (meta data) | emd-33014-v30.xml emd-33014.xml | 16.5 KB 16.5 KB | Display Display | EMDB header |
| Images | emd_33014.png | 78.4 KB | ||
| Filedesc metadata | emd-33014.cif.gz | 6.5 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-33014 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-33014 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7x5hMC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_33014.map.gz / Format: CCP4 / Size: 30.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.071 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
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Sample components
-Entire : 5-HT5A-Gi-scFv16 complex
| Entire | Name: 5-HT5A-Gi-scFv16 complex |
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| Components |
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-Supramolecule #1: 5-HT5A-Gi-scFv16 complex
| Supramolecule | Name: 5-HT5A-Gi-scFv16 complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5 |
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| Source (natural) | Organism: Homo sapiens (human) |
-Supramolecule #2: 5-HT5A-Gi
| Supramolecule | Name: 5-HT5A-Gi / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#3, #5 |
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| Source (natural) | Organism: ![]() |
-Supramolecule #3: scFv16
| Supramolecule | Name: scFv16 / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #4 |
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-Macromolecule #1: Guanine nucleotide-binding protein G(i) subunit alpha-1
| Macromolecule | Name: Guanine nucleotide-binding protein G(i) subunit alpha-1 type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 40.414047 KDa |
| Recombinant expression | Organism: Trichoplusia ni (cabbage looper) |
| Sequence | String: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKNTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...String: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKNTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTTGIVETH FTFKDLHFKM FDVGAQRSER KKWIHCFEGV TAIIFCVALS DYDLVLAEDE EM NRMHASM KLFDSICNNK WFTDTSIILF LNKKDLFEEK IKKSPLTICY PEYAGSNTYE EAAAYIQCQF EDLNKRKDTK EIY THFTCS TDTKNVQFVF DAVTDVIIKN NLKDCGLF UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1 |
-Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
| Macromolecule | Name: 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 |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 40.226992 KDa |
| Recombinant expression | Organism: Trichoplusia ni (cabbage looper) |
| Sequence | String: 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 WDSFLKIWNG SSGGGGSGGG GSSGVSGWRL FKKIS UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 |
-Macromolecule #3: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
| Macromolecule | Name: 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 |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 7.729947 KDa |
| Recombinant expression | Organism: Trichoplusia ni (cabbage looper) |
| Sequence | String: ASNNTASIAQ ARKLVEQLKM EANIDRIKVS KAAADLMAYC EAHAKEDPLL TPVPASENPF REKKFFCAIL UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-Macromolecule #4: scFv16
| Macromolecule | Name: scFv16 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 30.552234 KDa |
| Recombinant expression | Organism: Trichoplusia ni (cabbage looper) |
| Sequence | String: 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 |
-Macromolecule #5: Soluble cytochrome b562,5-hydroxytryptamine receptor 5A,hydroxytr...
| Macromolecule | Name: Soluble cytochrome b562,5-hydroxytryptamine receptor 5A,hydroxytryptamine receptor 5A type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 77.127281 KDa |
| Recombinant expression | Organism: Trichoplusia ni (cabbage looper) |
| Sequence | String: MKTIIALSYI FCLVFADYKD DDDAKLQTMH HHHHHHHHHH HHHHADLEDN WETLNDNLKV IEKADNAAQV KDALTKMRAA ALDAQKATP PKLEDKSPDS PEMKDFRHGF DILVGQIDDA LKLANEGKVK EAQAAAEQLK TTRNAYIQKY LASENLYFQG G TDLPVNLT ...String: MKTIIALSYI FCLVFADYKD DDDAKLQTMH HHHHHHHHHH HHHHADLEDN WETLNDNLKV IEKADNAAQV KDALTKMRAA ALDAQKATP PKLEDKSPDS PEMKDFRHGF DILVGQIDDA LKLANEGKVK EAQAAAEQLK TTRNAYIQKY LASENLYFQG G TDLPVNLT SFSLSTPSPL ETNHSLGKDD LRPSSPLLSV FGVLILTLLG FLVAATFAWN LLVLATILRV RTFHRVPHNL VA SMAVSDV LVAALVMPLS LVHELSGRRW QLGRRLCQLW IACDVLCCTA SIWNVTAIAL DRYWSITRHM EYTLRTRKCV SNV MIALTW ALSAVISLAP LLFGWGETYS EGSEECQVSR EPSYAVFSTV GAFYLPLCVV LFVYWKIYKA AKFRVGSRKT NSVS PISEA VEVKDSAKQP QMVFTVRHAT VTFQPEGDTW REQKEQRAAL MVGILIGVFV LCWIPFFLTE LISPLCSCDI PAIWK SIFL WLGYSNSFFN PLIYTAFNKN YNSAFKNFFS RQHGSSGGGG SGGGGSSGVF TLEDFVGDWE QTAAYNLDQV LEQGGV SSL LQNLAVSVTP IQRIVRSGEN ALKIDIHVII PYEGLSADQM AQIEEVFKVV YPVDDHHFKV ILPYGTLVID GVTPNML NY FGRPYEGIAV FDGKKITVTG TLWNGNKIID ERLITPDGSM LFRVTINS UniProtKB: Soluble cytochrome b562, 5-hydroxytryptamine receptor 5A |
-Macromolecule #6: 3-(2-azanylethyl)-1H-indole-5-carboxamide
| Macromolecule | Name: 3-(2-azanylethyl)-1H-indole-5-carboxamide / type: ligand / ID: 6 / Number of copies: 1 / Formula: 8K3 |
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| Molecular weight | Theoretical: 203.24 Da |
| Chemical component information | ![]() ChemComp-8K3: |
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.4 |
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| Vitrification | Cryogen name: ETHANE-PROPANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 70.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: OTHER |
| Electron optics | Illumination mode: OTHER / Imaging mode: OTHER / Nominal defocus max: 2.2 µm / Nominal defocus min: 1.2 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
| Startup model | Type of model: EMDB MAP EMDB ID: |
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| Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 754854 |
| Initial angle assignment | Type: RANDOM ASSIGNMENT |
| Final angle assignment | Type: MAXIMUM LIKELIHOOD |
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Keywords
Homo sapiens (human)
Authors
China, 1 items
Citation































Z (Sec.)
Y (Row.)
X (Col.)




















Trichoplusia ni (cabbage looper)


