+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-34993 | |||||||||
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Title | Gi bound Orphan GPR20 complex with Fab046 in ligand-free state | |||||||||
Map data | ||||||||||
Sample |
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Function / homology | Function and homology information positive regulation of Rho protein signal transduction / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / D2 dopamine receptor binding / G protein-coupled serotonin receptor binding / regulation of mitotic spindle organization / cellular response to forskolin / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Regulation of insulin secretion ...positive regulation of Rho protein signal transduction / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / D2 dopamine receptor binding / G protein-coupled serotonin receptor binding / regulation of mitotic spindle organization / cellular response to forskolin / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / electron transport chain / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / 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 / response to peptide hormone / 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 / 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 / GDP binding / 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 / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / cell cortex / midbody / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / Ras protein signal transduction / Extra-nuclear estrogen signaling / receptor complex / cell population proliferation / periplasmic space / electron transfer activity / iron ion binding / G protein-coupled receptor signaling pathway / cell division / lysosomal membrane / GTPase activity / centrosome / synapse / heme binding / protein-containing complex binding / nucleolus / GTP binding / magnesium ion binding / signal transduction / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) / Rattus (rat) / Vicugna pacos (alpaca) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.22 Å | |||||||||
Authors | Lin X / Jiang S / Xu F | |||||||||
Funding support | 1 items
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Citation | Journal: Cell Discov / Year: 2023 Title: The activation mechanism and antibody binding mode for orphan GPR20. Authors: Xi Lin / Shan Jiang / Yiran Wu / Xiaohu Wei / Gye-Won Han / Lijie Wu / Junlin Liu / Bo Chen / Zhibin Zhang / Suwen Zhao / Vadim Cherezov / Fei Xu / Abstract: GPR20 is a class-A orphan G protein-coupled receptor (GPCR) and a potential therapeutic target for gastrointestinal stromal tumors (GIST) owing to its differentially high expression. An antibody-drug ...GPR20 is a class-A orphan G protein-coupled receptor (GPCR) and a potential therapeutic target for gastrointestinal stromal tumors (GIST) owing to its differentially high expression. An antibody-drug conjugate (ADC) containing a GPR20-binding antibody (Ab046) was recently developed in clinical trials for GIST treatment. GPR20 constitutively activates Gi proteins in the absence of any known ligand, but it remains obscure how this high basal activity is achieved. Here we report three cryo-EM structures of human GPR20 complexes including Gi-coupled GPR20 in the absence or presence of the Fab fragment of Ab046 and Gi-free GPR20. Remarkably, the structures demonstrate a uniquely folded N-terminal helix capping onto the transmembrane domain and our mutagenesis study suggests a key role of this cap region in stimulating the basal activity of GPR20. We also uncover the molecular interactions between GPR20 and Ab046, which may enable the design of tool antibodies with enhanced affinity or new functionality for GPR20. Furthermore, we report the orthosteric pocket occupied by an unassigned density which might be essential for exploring opportunities for deorphanization. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_34993.map.gz | 85.9 MB | EMDB map data format | |
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Header (meta data) | emd-34993-v30.xml emd-34993.xml | 20.8 KB 20.8 KB | Display Display | EMDB header |
Images | emd_34993.png | 76.5 KB | ||
Masks | emd_34993_msk_1.map | 91.1 MB | Mask map | |
Others | emd_34993_half_map_1.map.gz emd_34993_half_map_2.map.gz | 84.5 MB 84.5 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-34993 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-34993 | HTTPS FTP |
-Related structure data
Related structure data | 8hscMC 8hs2C 8hs3C M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_34993.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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Voxel size | X=Y=Z: 0.832 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
File | emd_34993_msk_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_34993_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_34993_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
-Entire : The complex of Gi bound Orphan GPR20 with Fab046
Entire | Name: The complex of Gi bound Orphan GPR20 with Fab046 |
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Components |
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-Supramolecule #1: The complex of Gi bound Orphan GPR20 with Fab046
Supramolecule | Name: The complex of Gi bound Orphan GPR20 with Fab046 / type: complex / ID: 1 / Chimera: Yes / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: Homo sapiens (human) |
-Macromolecule #1: light chain of Fab046
Macromolecule | Name: light chain of Fab046 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Rattus (rat) |
Molecular weight | Theoretical: 25.637654 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: METDRLLLWV LLLWVPGSTG DTVLTQSPAL AVSLGQRVTI SCRASKSVST YIHWYQQRSG QQPKLLIYSA SNLESGVPSR FSGSGSGTD FTLTIDPVEP DDIANYYCQQ INELPYTFGA GTKLELKRAD AAPTVSIFPP STERLATGGA SVVCLMNNFY P RDISVKWK ...String: METDRLLLWV LLLWVPGSTG DTVLTQSPAL AVSLGQRVTI SCRASKSVST YIHWYQQRSG QQPKLLIYSA SNLESGVPSR FSGSGSGTD FTLTIDPVEP DDIANYYCQQ INELPYTFGA GTKLELKRAD AAPTVSIFPP STERLATGGA SVVCLMNNFY P RDISVKWK IDGTERRDGV LDSVTDQDSK DSTYSMSSTL SLTKADYESH NLYTCEVVHK TSSSPVVKSF NRNEC |
-Macromolecule #2: 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: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 40.472082 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
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 NRMHESM KLFDSICNNK WFTDTSIILF LNKKDLFEEK IKKSPLTICY PEYAGSNTYE EAAAYIQCQF EDLNKRKDTK EIY THFTCS TDTKNVQFVF DAVTDVIIKN NLKDCGLF |
-Macromolecule #3: 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: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 37.41693 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: 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 |
-Macromolecule #4: 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: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 7.861143 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L |
-Macromolecule #5: heavy chain of Fab046
Macromolecule | Name: heavy chain of Fab046 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Rattus (rat) |
Molecular weight | Theoretical: 25.406607 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: MEWNWVFLFL LSVTAEVHSQ VQLQQSGAEL AKPGSSVKIS CKASGYTFTS YYISWIKQTT GQGLKYIGFI NPGSGHTNYN EKFKGKATL TVDKSSSTAF MQLSSLTPDD SAIYYCARGA GGFLRIITKF DYWGQGVMVT VSSAQTTAPS VYPLAPGCGD T TSSTVTLG ...String: MEWNWVFLFL LSVTAEVHSQ VQLQQSGAEL AKPGSSVKIS CKASGYTFTS YYISWIKQTT GQGLKYIGFI NPGSGHTNYN EKFKGKATL TVDKSSSTAF MQLSSLTPDD SAIYYCARGA GGFLRIITKF DYWGQGVMVT VSSAQTTAPS VYPLAPGCGD T TSSTVTLG CLVKGYFPEP VTVTWNSGAL SSDVHTFPAV LQSGLYTLTS SVTSSTWPSQ TVTCNVAHPA SSTKVDKKV |
-Macromolecule #6: Soluble cytochrome b562,G-protein coupled receptor 20
Macromolecule | Name: Soluble cytochrome b562,G-protein coupled receptor 20 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 56.04198 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: MKTIIALSYI FCLVFADYKD DDDAGRAADL EDNWETLNDN LKVIEKADNA AQVKDALTKM RAAALDAQKA TPPKLEDKSP DSPEMKDFR HGFDILVGQI DDALKLANEG KVKEAQAAAE QLKTTRNAYI QKYLMPSVSP AGPSAGAVPN ATAVTTVRTN A SGLEVPLF ...String: MKTIIALSYI FCLVFADYKD DDDAGRAADL EDNWETLNDN LKVIEKADNA AQVKDALTKM RAAALDAQKA TPPKLEDKSP DSPEMKDFR HGFDILVGQI DDALKLANEG KVKEAQAAAE QLKTTRNAYI QKYLMPSVSP AGPSAGAVPN ATAVTTVRTN A SGLEVPLF HLFARLDEEL HGTFPGLWLA LMAVHGAIFL AGLVLNGLAL YVFCCRTRAK TPSVIYTINL VVTDLLVGLS LP TRFAVYY GARGCLRCAF PHVLGYFLNM HCSILFLTCI CVDRYLAIVR PEGSRRCRQP ACARAVCAFV WLAAGAVTLS VLG VTGSRP CCRVFALTVL EFLLPLLVIS VFTGRIMCAL SRPGLLHQGR QRRVRAMQLL LTVLIIFLVC FTPFHARQVA VALW PDMPH HTSLVVYHVA VTLSSLNSCM DPIVYCFVTS GFQATVRGLF GQHGEREPSS GDVVSMHRSS KGSGRHHILS AGPHA LTQA LANGPEAEFL EVLFQGPHHH HHHHHHH |
-Macromolecule #7: scFv16
Macromolecule | Name: scFv16 / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Vicugna pacos (alpaca) |
Molecular weight | Theoretical: 31.870629 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
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 GAGTKLELKA AAHHHHHHHH |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: OTHER |
Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.2 µm / Nominal defocus min: 0.7000000000000001 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.22 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 164932 |
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Initial angle assignment | Type: OTHER |
Final angle assignment | Type: OTHER |