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      RECEPTOR
      STRUCTURE
      SIGNAL PROTEIN
      AUXILIARY PROTEIN
      STRUCTURE LIGAND
      PHYSIOLOGICAL LIGAND
      SODIUM ION SITE
      REFERENCE
      ANNOTATED
      UniProt
      IUPHARReceptor familyCl.SpeciesMethod
      PDB
      Refined
      structure
      ResolutionPreferred
      chain
      State
      Degree
      active (%)
      % of SeqFamilySubtypeNote% of SeqFusionAntibodiesNameTypeModalityNameTypeD2x50
      S3x39
      Sodium in
      structure
      AuthorsReferencePDB Date
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      RECEPTOR
      STRUCTURE
      SIGNAL PROTEIN
      AUXILIARY PROTEIN
      STRUCTURE LIGAND
      PHYSIOLOGICAL LIGAND
      SODIUM ION SITE
      REFERENCE
      ANNOTATED
      UniProt
      IUPHAR
      Receptor family
      Cl.
      Species
      Method
      PDB
      Refined
      structure
      Resolution
      Preferred
      chain
      State
      Degree
      active (%)
      % of Seq
      Family
      Subtype
      Note
      % of Seq
      Fusion
      Antibodies
      Name
      Type
      Modality
      Name
      Type
      D2x50
      S3x39
      Sodium in
      structure
      Authors
      Reference
      PDB Date
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      CCR8 CCR8 Chemokine A Human Cryo-EM 8XML - 2.6 R Active 100 63 Gi/o αi1 - 62 BRIL scFv16 Apo (no ligand)
      none Apo (no ligand) CCL1, CCL8 peptide No No - - 2025-01-01 Yes
      GPR55 GPR55 GPR18, GPR55 and GPR119 A Human Cryo-EM 9IY8 9IY8_refined 3.0 R Active 100 92 G12/13 α13 - 57 - scFv16 Apo (no ligand)
      none Apo (no ligand) 2-arachidonoylglycerolphosphoinositol, lysophosphatidylinositol, 2-arachidonoylglycerol, N-palmitoylethanolamine, anandamide small-molecule No No Chang H, Li X, Shen L, Ge X, Hao S, Wu L, Liu S, Liu J, Cherezov V, Hua T 10.1038/S41422-024-01046-8 2025-01-01 Yes
      GPR55 GPR55 GPR18, GPR55 and GPR119 A Human Cryo-EM 9IYA - 3.0 A Active 56 86 - - - - BRIL anti-BRIL Fab heavy chain
      anti-BRIL Fab light chain
      anti-BRIL Fab Nanobody
      4-(3-Bromo-5-ethoxy-4-hydroxyphenyl)-N-(2-methoxyphenyl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxamide
      small-molecule Antagonist 2-arachidonoylglycerolphosphoinositol, lysophosphatidylinositol, 2-arachidonoylglycerol, N-palmitoylethanolamine, anandamide small-molecule No No - - 2025-01-01 Yes
      LPAR1 LPA1 Lysophospholipid (LPA) A Human Cryo-EM 9IZH - 3.0 R Active 100 82 G12/13 α13 G13-Gi2 chimera 56 BRIL scFv16 lysophosphatidic acid
      small-molecule Agonist 1-O-Oleoyl-D-glycerol 3-phosphoric acid small-molecule No No Suzuki S, Tanaka K, Kamegawa A, Nishikawa K, Suzuki H, Oshima A, Fujiyoshi Y 10.1016/J.JSB.2024.108164 2025-01-01 Yes
      LPAR1 LPA1 Lysophospholipid (LPA) A Human Cryo-EM 9IZF - 3.1 R Active 100 80 Gi/o αi1 - 61 BRIL scFv16 lysophosphatidic acid
      small-molecule Agonist 1-O-Oleoyl-D-glycerol 3-phosphoric acid small-molecule No No - - 2025-01-01 Yes
      LPAR1 LPA1 Lysophospholipid (LPA) A Human Cryo-EM 9IZG - 3.0 R Active 100 82 Gq/11 αq Gq-Gs chimera 57 BRIL scFv16 lysophosphatidic acid
      small-molecule Agonist 1-O-Oleoyl-D-glycerol 3-phosphoric acid small-molecule No No - - 2025-01-01 Yes
      AA2AR A2A Adenosine A Human X-ray 8UGW - 3.9 A Active 69 67 - - - - T4-Lysozyme - CGS 21680
      small-molecule Agonist adenosine small-molecule No No - - 2024-12-18 Yes
      HCAR3 HCA3 Hydroxycarboxylic acid A Human Cryo-EM 8JEF 8JEF_refined 3.0 A Active 100 73 Gi/o αi1 - 61 - scFv16 3-hydroxyoctanoic acid
      small-molecule Agonist 3-hydroxyoctanoic acid small-molecule No No Ye F, Pan X, Zhang Z, Xiang X, Li X, Zhang B, Ning P, Liu A, Wang Q, Gong K, Li J, Zhu L, Qian C, Chen G, Du Y 10.1016/J.CELREP.2024.114895 2024-12-18 Yes
      MCHR1 MCH1 Melanin-concentrating hormone A Human Cryo-EM 8YNT - 3.4 R Inactive 8 69 - - - - BRIL Fab 1B3 heavy chain
      Fab 1B3 light chain
      CHEMBL242004
      small-molecule Antagonist melanin-concentrating hormone peptide No No - - 2024-12-18 Yes
      MCHR1 MCH1 Melanin-concentrating hormone A Human Cryo-EM 8YNS - 3.3 R Inactive 8 65 - - - - BRIL Fab 1B3 heavy chain
      Fab 1B3 light chain
      CHEMBL242004
      small-molecule Antagonist melanin-concentrating hormone peptide No No - - 2024-12-18 Yes
      FFAR1 FFA1 Free fatty acid A Human Cryo-EM 9K1C 9K1C_refined 3.2 R Active 100 93 Gi/o αi1 - 62 - - docosahexaenoic acid
      small-molecule Agonist myristic acid, docosahexaenoic acid, α-linolenic acid, oleic acid small-molecule No No Ke Y, Huang Y, Yi C, Ma L, Chu X, Wu B, Zhao Q, Han S 10.1016/J.CELREP.2024.115024 2024-12-11 Yes
      FFAR2 FFA2 Free fatty acid A Human Cryo-EM 9K1D - 3.3 R Active 100 81 Gi/o αi1 - 62 - - butyric acid
      small-molecule Agonist propanoic acid, acetic acid, butyric acid, trans-2-methylcrotonic acid small-molecule No No Ke Y, Huang Y, Yi C, Ma L, Chu X, Wu B, Zhao Q, Han S 10.1016/J.CELREP.2024.115024 2024-12-11 Yes
      MRGRD MRGPRD A orphans A Human Cryo-EM 9DQH 9DQH_refined 2.9 A Active 100 79 Gq/11 αq Gq-Gs-Gi chimera 57 - scFv16 2-[[1-[2-(4-chlorophenyl)-2-methylpropanoyl]piperidin-4-yl]amino]-5,6,7,8-tetrahydro-3H-quinazolin-4-one
      small-molecule Agonist β-alanine small-molecule No No - - 2024-12-11 Yes
      MRGRD MRGPRD A orphans A Human Cryo-EM 9DQJ 9DQJ_refined 2.9 A Active 100 79 Gq/11 αq Gq-Gs-Gi chimera 57 - scFv16 2-[[1-[1-(4-methoxyphenyl)cyclopropanecarbonyl]piperidin-4-yl]amino]-3H-quinazolin-4-one
      small-molecule Agonist β-alanine small-molecule No No - - 2024-12-11 Yes
      S1PR1 S1P1 Lysophospholipid (S1P) A Human Cryo-EM 8YIC 8YIC_refined 3.5 R Active 100 78 Gi/o αi1 - 64 T4-Lysozyme - SAR247799
      small-molecule Agonist sphingosine 1-phosphate, sphingosylphosphorylcholine, dihydrosphingosine 1-phosphate small-molecule No No - - 2024-12-11 Yes
      XCR1 XCR1 Chemokine A Human Cryo-EM 9AST 9AST_refined 3.1 R Active 100 85 Gi/o αi1 - 62 - scFv16 Lymphotactin
      protein Agonist XCL1, XCL2 peptide No No Zhang X, Schlimgen RR, Singh S, Tomani MP, Volkman BF, Zhang C 10.1073/PNAS.2405732121 2024-12-11 Yes
      APJ apelin Apelin A Human X-ray 8S4D - 2.6 A Inactive 16 73 - - - - BRIL - CMF-019
      small-molecule Agonist Elabela/Toddler-11, apelin-13, [Pyr1]apelin-13, apelin-17, Elabela/Toddler-21, Elabela/Toddler-32, apelin receptor early endogenous ligand, apelin-36 peptide No No - - 2024-12-04 Yes
      GPR6 GPR6 A orphans A Human X-ray 8T1W - 3.5 A Inactive 1 73 - - - - BRIL - CVN424
      small-molecule Inverse agonist sphingosine 1-phosphate small-molecule No No Barekatain M, Johansson LC, Lam JH, Chang H, Sadybekov AV, Han GW, Russo J, Bliesath J, Brice NL, Carlton MBL, Saikatendu KS, Sun H, Murphy ST, Monenschein H, Schiffer HH, Popov P, Lutomski CA, Robinson CV, Liu ZJ, Hua T, Katritch V, Cherezov V 10.1126/SCISIGNAL.ADO8741 2024-12-04 Yes
      GPR6 GPR6 A orphans A Human Cryo-EM 8TYW 8TYW_refined 3.4 A Active 100 73 Gs αs - 60 - Nanobody-35 Apo (no ligand)
      none Apo (no ligand) sphingosine 1-phosphate small-molecule No No Barekatain M, Johansson LC, Lam JH, Chang H, Sadybekov AV, Han GW, Russo J, Bliesath J, Brice NL, Carlton MBL, Saikatendu KS, Sun H, Murphy ST, Monenschein H, Schiffer HH, Popov P, Lutomski CA, Robinson CV, Liu ZJ, Hua T, Katritch V, Cherezov V 10.1126/SCISIGNAL.ADO8741 2024-12-04 Yes
      GPR6 GPR6 A orphans A Human X-ray 8T1V - 2.6 A Inactive 1 73 - - - - BRIL - CHEMBL4763822
      small-molecule Inverse agonist sphingosine 1-phosphate small-molecule No No Barekatain M, Johansson LC, Lam JH, Chang H, Sadybekov AV, Han GW, Russo J, Bliesath J, Brice NL, Carlton MBL, Saikatendu KS, Sun H, Murphy ST, Monenschein H, Schiffer HH, Popov P, Lutomski CA, Robinson CV, Liu ZJ, Hua T, Katritch V, Cherezov V 10.1126/SCISIGNAL.ADO8741 2024-12-04 Yes
      GPR6 GPR6 A orphans A Human X-ray 8TF5 - 2.1 A Active 99 73 - - - - BRIL - oleic acid
      small-molecule Inverse agonist sphingosine 1-phosphate small-molecule No No Barekatain M, Johansson LC, Lam JH, Chang H, Sadybekov AV, Han GW, Russo J, Bliesath J, Brice NL, Carlton MBL, Saikatendu KS, Sun H, Murphy ST, Monenschein H, Schiffer HH, Popov P, Lutomski CA, Robinson CV, Liu ZJ, Hua T, Katritch V, Cherezov V 10.1126/SCISIGNAL.ADO8741 2024-12-04 Yes
      LGR4 LGR4 A orphans A Human Cryo-EM 8XFT - 3.2 A Inactive 8 77 - - - - - Nanobody-52 R-spondin-2
      protein Agonist R-spondin-3, R-spondin-4, R-spondin-1, R-spondin-2 peptide No No - - 2024-12-04 Yes
      LGR4 LGR4 A orphans A Human Cryo-EM 8XFP - 3.2 A Inactive 8 77 - - - - - Nanobody-52 R-spondin-2
      protein Agonist R-spondin-3, R-spondin-4, R-spondin-1, R-spondin-2 peptide No No - - 2024-12-04 Yes
      LGR4 LGR4 A orphans A Human Cryo-EM 8Y69 - 3.4 D Inactive 8 77 - - - - - Nanobody-52 R-spondin-2
      protein Agonist R-spondin-3, R-spondin-4, R-spondin-1, R-spondin-2 peptide No No - - 2024-12-04 Yes
      LGR4 LGR4 A orphans A Human Cryo-EM 8XFS - 3.2 A Inactive 8 77 - - - - - Nanobody-52 R-spondin-2
      protein Agonist R-spondin-3, R-spondin-4, R-spondin-1, R-spondin-2 peptide No No - - 2024-12-04 Yes
      PD2R2 DP2 Prostanoid A Human Cryo-EM 9IYB - 2.8 A Active 100 76 Gi/o αi1 - 64 - scFv16 PGD2
      lipid Agonist PGD3, PGD2, PGI2, PGE2, thromboxane A2, PGJ2, PGF2α small-molecule No No - - 2024-12-04 Yes
      PD2R2 DP2 Prostanoid A Human Cryo-EM 8XXV - 2.3 A Active 100 76 Gi/o αi1 - 64 - scFv16 [(2~{R})-1-hexadecanoyloxy-3-[oxidanyl-[(2~{S},3~{R},5~{R},6~{S})-2,3,4,5,6-pentakis(oxidanyl)cyclohexyl]oxy-phosphoryl]oxy-propan-2-yl] (~{Z})-octadec-9-enoate
      lipid PAM PGD3, PGD2, PGI2, PGE2, thromboxane A2, PGJ2, PGF2α small-molecule No No - - 2024-12-04 Yes
      PD2R2 DP2 Prostanoid A Human Cryo-EM 8XXU - 2.5 A Active 100 80 Gi/o αi1 - 64 - scFv16 [(2~{R})-1-hexadecanoyloxy-3-[oxidanyl-[(2~{S},3~{R},5~{R},6~{S})-2,3,4,5,6-pentakis(oxidanyl)cyclohexyl]oxy-phosphoryl]oxy-propan-2-yl] (~{Z})-octadec-9-enoate
      lipid PAM PGD3, PGD2, PGI2, PGE2, thromboxane A2, PGJ2, PGF2α small-molecule No No - - 2024-12-04 Yes
      GLP1R GLP-1 Glucagon B1 Human Cryo-EM 9IVG 9IVG_refined 3.0 R Active 100 83 Gs αs Gs-Gi chimera 62 - Nanobody-35 CHEMBL410972
      protein Agonist glucagon-like peptide 1-(7-37), glucagon, glucagon-like peptide 1-(7-36) amide peptide No No Li J, Li G, Mai Y, Liu X, Yang D, Zhou Q, Wang MW 10.1016/J.APSB.2024.09.002 2024-11-27 Yes
      GRM2 mGlu2 Metabotropic glutamate C Human Cryo-EM 8WGC - 6.0 D Active - 87 - - - - - - LY379268
      small-molecule Agonist L-glutamic acid small-molecule No No Huang W, Jin N, Guo J, Shen C, Xu C, Xi K, Bonhomme L, Quast RB, Shen DD, Qin J, Liu YR, Song Y, Gao Y, Margeat E, Rondard P, Pin JP, Zhang Y, Liu J 10.1038/S41467-024-54744-7 2024-11-27 Yes
      GRM4 mGlu4 Metabotropic glutamate C Human Cryo-EM 8WGD - 4.5 B Inactive - 82 - - - - - - (2S)-2-azanyl-2-cyclopropyl-2-(4-phosphonophenyl)ethanoic acid
      small-molecule Antagonist L-serine-O-phosphate, L-glutamic acid small-molecule No No - - 2024-11-27 Yes
      GRM4 mGlu4 Metabotropic glutamate C Human Cryo-EM 8WG9 - 4.5 B Active - 85 - - - - - - L-AP4
      small-molecule Agonist L-serine-O-phosphate, L-glutamic acid small-molecule No No - - 2024-11-27 Yes
      LPAR1 LPA1 Lysophospholipid (LPA) A Human Cryo-EM 9J5V - 2.9 R Active 100 80 Gi/o αi1 - 63 - scFv16 CpY
      small-molecule Agonist 1-O-Oleoyl-D-glycerol 3-phosphoric acid small-molecule No No - - 2024-11-27 Yes
      OPRD δ Opioid A Human Cryo-EM 8Y45 8Y45_refined 3.5 A Active 100 77 Gi/o αi2 - 63 - scFv16 ADL5859
      small-molecule Agonist endomorphin-1, α-neoendorphin, β-endorphin, dynorphin B, [Met]enkephalin, dynorphin A-(1-13), [Leu]enkephalin, dynorphin A, dynorphin A-(1-8) peptide No No - - 2024-11-27 Yes
      T2R14 TAS2R14 Taste 2 T2 Human Cryo-EM 8RQL - 3.0 R Active 100 88 Gi/o αgust - 61 - scFv16 flufenamic acid
      small-molecule Agonist - - No No Peri L, Matzov D, Huxley DR, Rainish A, Fierro F, Sapir L, Pfeiffer T, Waterloo L, Hubner H, Peleg Y, Gmeiner P, McCormick PJ, Weikert D, Niv MY, Shalev-Benami M 10.1038/S41467-024-54157-6 2024-11-27 Yes
      CNR1 CB1 Cannabinoid A Human Cryo-EM 9BA0 - 3.1 R Inactive 7 60 - - - - Glycogen synthase Nanobody-36 Monlunabant
      small-molecule Inverse agonist 2-arachidonoylglycerol, anandamide small-molecule No No - - 2024-11-20 Yes
      CNR1 CB1 Cannabinoid A Human Cryo-EM 9B9Y - 3.5 R Inactive 7 60 - - - - Glycogen synthase Nanobody-36 taranabant
      small-molecule Inverse agonist 2-arachidonoylglycerol, anandamide small-molecule No No Kumari P, Dvoracsko S, Enos MD, Ramesh K, Lim D, Hassan SA, Kunos G, Cinar R, Iyer MR, Rosenbaum DM 10.1038/S41467-024-54206-0 2024-11-20 Yes
      CNR1 CB1 Cannabinoid A Human Cryo-EM 9B9Z - 3.3 R Inactive 7 60 - - - - Glycogen synthase Nanobody-36 Zevaquenabant
      small-molecule Inverse agonist 2-arachidonoylglycerol, anandamide small-molecule No No - - 2024-11-20 Yes
      CNR2 CB2 Cannabinoid A Human Cryo-EM 8X3L 8X3L_refined 3.1 R Active 100 80 Gi/o αi1 - 62 - scFv16 CHEMBL5422946
      small-molecule Agonist 2-arachidonoylglycerol, anandamide small-molecule No No Yang X, Zhou P, Shen S, Hu Q, Tian C, Xia A, Wang Y, Yang Z, Nan J, Zhou Y, Chen S, Tian X, Wu C, Lin G, Zhang L, Wang K, Zheng T, Zou J, Yan W, Shao Z, Yang S 10.1073/PNAS.2401091121 2024-11-20 Yes
      HCAR3 HCA3 Hydroxycarboxylic acid A Human Cryo-EM 8JEI - 2.7 A Active 100 74 Gi/o αi1 - 61 - scFv16 4-(n-propyl)amino-3-nitrobenzoic acid
      small-molecule Agonist 3-hydroxyoctanoic acid small-molecule No No Ye F, Pan X, Zhang Z, Xiang X, Li X, Zhang B, Ning P, Liu A, Wang Q, Gong K, Li J, Zhu L, Qian C, Chen G, Du Y 10.1016/J.CELREP.2024.114895 2024-11-20 Yes
      OPSD Rhodopsin Opsins A Bovine Cryo-EM 8P13 - 5.2 R Active 100 91 Gi/o αi1 - 94 - Fab heavy chain
      Fab light chain
      scFv16
      Apo (no ligand)
      none Apo (no ligand) - - No No - - 2024-11-20 Yes
      OPSD Rhodopsin Opsins A Bovine Cryo-EM 8P12 - 3.2 R Active 100 91 Gi/o αi1 - 59 - Fab heavy chain
      Fab light chain
      Apo (no ligand)
      none Apo (no ligand) - - No No - - 2024-11-20 Yes
      OPSD Rhodopsin Opsins A Bovine Cryo-EM 8P15 - 5.9 R Active 100 92 Gi/o αi1 - 96 - Fab heavy chain
      Fab light chain
      scFv16
      Apo (no ligand)
      none Apo (no ligand) - - No No - - 2024-11-20 Yes
      ADRB2 β2 Adrenoceptors A Human Cryo-EM 9CHV - 4.0 A Intermediate 47 63 - - - - - - Apo (no ligand)
      none Apo (no ligand) (-)-adrenaline, L-NOREPINEPHRINE, (-)-noradrenaline, Zn2+, noradrenaline small-molecule No No Xu J, Chen G, Wang H, Cao S, Heng J, Deupi X, Du Y, Kobilka BK 10.1073/PNAS.2414544121 2024-11-13 Yes
      ADRB2 β2 Adrenoceptors A Human Cryo-EM 9CHU - 3.5 A Intermediate 47 66 - - - - - - Noradrenaline
      small-molecule Agonist (-)-adrenaline, L-NOREPINEPHRINE, (-)-noradrenaline, Zn2+, noradrenaline small-molecule No No Xu J, Chen G, Wang H, Cao S, Heng J, Deupi X, Du Y, Kobilka BK 10.1073/PNAS.2414544121 2024-11-13 Yes
      ADRB2 β2 Adrenoceptors A Human Cryo-EM 9CHX - 3.5 A Intermediate 47 67 - - - - - - Carazolol
      small-molecule Inverse agonist (-)-adrenaline, L-NOREPINEPHRINE, (-)-noradrenaline, Zn2+, noradrenaline small-molecule No No Xu J, Chen G, Wang H, Cao S, Heng J, Deupi X, Du Y, Kobilka BK 10.1073/PNAS.2414544121 2024-11-13 Yes
      GLP1R GLP-1 Glucagon B1 Human Cryo-EM 9IVM - 3.2 R Active 100 83 Gs αs Gs-Gi chimera 62 - Nanobody-35 CHEMBL410972
      LSN3318839
      protein
      small-molecule
      Agonist
      PAM
      glucagon-like peptide 1-(7-37), glucagon, glucagon-like peptide 1-(7-36) amide peptide No No - - 2024-11-13 Yes
      GPR55 GPR55 GPR18, GPR55 and GPR119 A Human Cryo-EM 8ZX5 - 3.0 R Active 100 88 G12/13 α13 - 56 - - AM251
      small-molecule Agonist 2-arachidonoylglycerolphosphoinositol, lysophosphatidylinositol, 2-arachidonoylglycerol, N-palmitoylethanolamine, anandamide small-molecule No No - - 2024-11-13 Yes
      GPR55 GPR55 GPR18, GPR55 and GPR119 A Human Cryo-EM 8ZX4 - 2.9 R Active 100 90 G12/13 α13 - 56 - - LPI
      small-molecule Agonist 2-arachidonoylglycerolphosphoinositol, lysophosphatidylinositol, 2-arachidonoylglycerol, N-palmitoylethanolamine, anandamide small-molecule No No - - 2024-11-13 Yes
      MCHR1 MCH1 Melanin-concentrating hormone A Human Cryo-EM 8WWI 8WWI_refined 3.4 R Active 100 68 Gi/o αi1 - 63 - scFv16 Apo (no ligand)
      none Apo (no ligand) melanin-concentrating hormone peptide No No - - 2024-11-13 Yes
      MCHR1 MCH1 Melanin-concentrating hormone A Human Cryo-EM 8WWM 8WWM_refined 2.8 R Active 100 68 Gi/o αi1 - 63 - scFv16 Melanin-concentrating hormone
      peptide Agonist melanin-concentrating hormone peptide No No Ye X, Liu G, Li X, He B, Tao Y, Guan J, Mu Y, Liu H, Gong W 10.1038/S41421-024-00754-0 2024-11-13 Yes
      MCHR1 MCH1 Melanin-concentrating hormone A Human Cryo-EM 8WWK 8WWK_refined 2.6 R Active 100 68 Gi/o αi1 - 63 - scFv16 Melanin-concentrating hormone
      peptide Agonist melanin-concentrating hormone peptide No No Ye X, Liu G, Li X, He B, Tao Y, Guan J, Mu Y, Liu H, Gong W 10.1038/S41421-024-00754-0 2024-11-13 Yes
      MCHR1 MCH1 Melanin-concentrating hormone A Human Cryo-EM 8WWN 8WWN_refined 2.7 R Active 100 68 Gi/o αi1 - 63 - scFv16 Melanin-concentrating hormone
      peptide Agonist melanin-concentrating hormone peptide No No Ye X, Liu G, Li X, He B, Tao Y, Guan J, Mu Y, Liu H, Gong W 10.1038/S41421-024-00754-0 2024-11-13 Yes
      MCHR1 MCH1 Melanin-concentrating hormone A Human Cryo-EM 8WWJ - 3.0 R Active 100 68 Gi/o αi1 - 63 - scFv16 Apo (no ligand)
      none Apo (no ligand) melanin-concentrating hormone peptide No No - - 2024-11-13 Yes
      MCHR1 MCH1 Melanin-concentrating hormone A Human Cryo-EM 8WWL 8WWL_refined 2.8 R Active 100 68 Gi/o αi1 - 63 - scFv16 Melanin-concentrating hormone
      peptide Agonist melanin-concentrating hormone peptide No No Ye X, Liu G, Li X, He B, Tao Y, Guan J, Mu Y, Liu H, Gong W 10.1038/S41421-024-00754-0 2024-11-13 Yes
      MCHR1 MCH1 Melanin-concentrating hormone A Human Cryo-EM 8WWH 8WWH_refined 2.8 R Active 100 68 Gi/o αi1 - 63 - scFv16 Apo (no ligand)
      none Apo (no ligand) melanin-concentrating hormone peptide No No - - 2024-11-13 Yes
      PTAFR PAF Platelet-activating factor A Human Cryo-EM 8XYD 8XYD_refined 2.9 A Active 100 89 Gi/o αi1 - 61 - scFv16 PAF
      small-molecule Agonist PAF small-molecule No No Fan W, Xu Y, He X, Luo P, Zhu J, Li J, Wang R, Yuan Q, Wu K, Hu W, Zhao Y, Xu S, Cheng X, Wang Y, Xu HE, Zhuang Y 10.1016/J.CELREP.2024.114422 2024-11-13 Yes
      GRM5 mGlu5 Metabotropic glutamate C Human Cryo-EM 8X0C - 3.2 A Active - 63 - - - - - - quisqualate
      VU0424465
      small-molecule
      small-molecule
      Agonist
      PAM
      L-glutamic acid small-molecule No No Cannone G, Berto L, Malhaire F, Ferguson G, Fouillen A, Balor S, Font-Ingles J, Llebaria A, Goudet C, Kotecha A, K R V, Lebon G 10.1038/S41467-024-55439-9 2024-11-06 Yes
      GRM5 mGlu5 Metabotropic glutamate C Human Cryo-EM 8X0B - 3.1 A Active - 64 - - - - - - quisqualate
      VU0424465
      small-molecule
      small-molecule
      Agonist
      PAM
      L-glutamic acid small-molecule No No Cannone G, Berto L, Malhaire F, Ferguson G, Fouillen A, Balor S, Font-Ingles J, Llebaria A, Goudet C, Kotecha A, K R V, Lebon G 10.1038/S41467-024-55439-9 2024-11-06 Yes
      GRM5 mGlu5 Metabotropic glutamate C Human Cryo-EM 8X0D - 3.5 A Active - 63 - - - - - - quisqualate
      VU0424465
      small-molecule
      small-molecule
      Agonist
      PAM
      L-glutamic acid small-molecule No No Cannone G, Berto L, Malhaire F, Ferguson G, Fouillen A, Balor S, Font-Ingles J, Llebaria A, Goudet C, Kotecha A, K R V, Lebon G 10.1038/S41467-024-55439-9 2024-11-06 Yes
      GRM5 mGlu5 Metabotropic glutamate C Human Cryo-EM 8X0H - 4.1 A Active - 64 - - - - - - quisqualate
      small-molecule Agonist L-glutamic acid small-molecule No No Cannone G, Berto L, Malhaire F, Ferguson G, Fouillen A, Balor S, Font-Ingles J, Llebaria A, Goudet C, Kotecha A, K R V, Lebon G 10.1038/S41467-024-55439-9 2024-11-06 Yes
      GRM5 mGlu5 Metabotropic glutamate C Human Cryo-EM 8X0G - 3.0 A Active - 63 - - - - - - quisqualate
      small-molecule Agonist L-glutamic acid small-molecule No No Cannone G, Berto L, Malhaire F, Ferguson G, Fouillen A, Balor S, Font-Ingles J, Llebaria A, Goudet C, Kotecha A, K R V, Lebon G 10.1038/S41467-024-55439-9 2024-11-06 Yes
      GRM5 mGlu5 Metabotropic glutamate C Human Cryo-EM 8X0F - 3.3 A Active - 63 - - - - - - quisqualate
      VU-29
      small-molecule
      small-molecule
      Agonist
      PAM
      L-glutamic acid small-molecule No No Cannone G, Berto L, Malhaire F, Ferguson G, Fouillen A, Balor S, Font-Ingles J, Llebaria A, Goudet C, Kotecha A, K R V, Lebon G 10.1038/S41467-024-55439-9 2024-11-06 Yes
      GRM5 mGlu5 Metabotropic glutamate C Human Cryo-EM 8X0E - 3.4 A Active - 63 - - - - - - quisqualate
      small-molecule Agonist L-glutamic acid small-molecule No No Cannone G, Berto L, Malhaire F, Ferguson G, Fouillen A, Balor S, Font-Ingles J, Llebaria A, Goudet C, Kotecha A, K R V, Lebon G 10.1038/S41467-024-55439-9 2024-11-06 Yes
      MRGX4 MRGPRX4 A orphans A Human Cryo-EM 8KEX - 3.2 E Active 98 79 - - - - BRIL - DCA-3P
      small-molecule Agonist - - No No Yang J, Zhao T, Fan J, Zou H, Lan G, Guo F, Shi Y, Ke H, Yu H, Yue Z, Wang X, Bai Y, Li S, Liu Y, Wang X, Chen Y, Li Y, Lei X 10.1016/J.CELL.2024.10.001 2024-11-06 Yes
      MRGX4 MRGPRX4 A orphans A Human Cryo-EM 8K4S 8K4S_refined 2.9 E Active 100 79 Gq/11 αq Gq-Gs chimera 57 BRIL scFv16 DCA-3P
      small-molecule Agonist - - No No Yang J, Zhao T, Fan J, Zou H, Lan G, Guo F, Shi Y, Ke H, Yu H, Yue Z, Wang X, Bai Y, Li S, Liu Y, Wang X, Chen Y, Li Y, Lei X 10.1016/J.CELL.2024.10.001 2024-11-06 Yes
      B1B1U5 Rhodopsin Opsins A Hasarius adansoni Cryo-EM 9EPR - 4.9 R Active 100 89 Gi/o αi1 - 60 - - Retinal (11-cis)
      small-molecule Agonist - - No No Tejero O, Pamula F, Koyanagi M, Nagata T, Afanasyev P, Das I, Deupi X, Sheves M, Terakita A, Schertler GFX, Rodrigues MJ, Tsai CJ 10.1038/S41467-024-53208-2 2024-10-30 Yes
      GP119 GPR119 GPR18, GPR55 and GPR119 A Human Cryo-EM 8VHF 8VHF_refined 3.5 R Active 100 88 Gs αs - 60 BRIL Nanobody-35 MBX-2982
      small-molecule Agonist N-oleoylethanolamide, SEA, N-palmitoylethanolamine, anandamide small-molecule No No - - 2024-10-30 Yes
      GRM2 mGlu2 Metabotropic glutamate C Human Cryo-EM 8WGB - 3.7 B Active - 83 Gi/o αi3 - 63 - - VU0155041
      small-molecule Agonist L-glutamic acid small-molecule No No Huang W, Jin N, Guo J, Shen C, Xu C, Xi K, Bonhomme L, Quast RB, Shen DD, Qin J, Liu YR, Song Y, Gao Y, Margeat E, Rondard P, Pin JP, Zhang Y, Liu J 10.1038/S41467-024-54744-7 2024-10-30 Yes
      KISSR kisspeptin Kisspeptin A Human Cryo-EM 8XGS - 3.0 A Active 100 74 Gq/11 αq - 64 - scFv16 Kisspeptin-10
      peptide Agonist kisspeptin-10, kisspeptin-14, kisspeptin-13, kisspeptin-52, kisspeptin-54 peptide No No Wu Z, Chen G, Qiu C, Yan X, Xu L, Jiang S, Xu J, Han R, Shi T, Liu Y, Gao W, Wang Q, Li J, Ye F, Pan X, Zhang Z, Ning P, Zhang B, Chen J, Du Y 10.1126/SCIADV.ADN7771 2024-10-30 Yes
      KISSR kisspeptin Kisspeptin A Human Cryo-EM 8XGO - 2.7 A Active 100 75 Gq/11 αq - 64 - scFv16 TAK448
      peptide Agonist kisspeptin-10, kisspeptin-14, kisspeptin-13, kisspeptin-52, kisspeptin-54 peptide No No Wu Z, Chen G, Qiu C, Yan X, Xu L, Jiang S, Xu J, Han R, Shi T, Liu Y, Gao W, Wang Q, Li J, Ye F, Pan X, Zhang Z, Ning P, Zhang B, Chen J, Du Y 10.1126/SCIADV.ADN7771 2024-10-30 Yes
      KISSR kisspeptin Kisspeptin A Human Cryo-EM 8XGU - 3.0 A Active 100 72 Gi/o αi1 - 60 - scFv16 ACY-DTY-HYP-ASN-THR-PHE-XZA-LEU-NMM-TRP-NH2
      peptide Agonist kisspeptin-10, kisspeptin-14, kisspeptin-13, kisspeptin-52, kisspeptin-54 peptide No No Wu Z, Chen G, Qiu C, Yan X, Xu L, Jiang S, Xu J, Han R, Shi T, Liu Y, Gao W, Wang Q, Li J, Ye F, Pan X, Zhang Z, Ning P, Zhang B, Chen J, Du Y 10.1126/SCIADV.ADN7771 2024-10-30 Yes
      LGR4 LGR4 A orphans A Human Cryo-EM 8WVW - 3.5 A Inactive 8 76 - - - - - - Apo (no ligand)
      none Apo (no ligand) R-spondin-3, R-spondin-4, R-spondin-1, R-spondin-2 peptide No No - - 2024-10-30 Yes
      LGR4 LGR4 A orphans A Human Cryo-EM 8WVU - 3.6 A Inactive 8 77 - - - - - - R-spondin-1
      protein Agonist R-spondin-3, R-spondin-4, R-spondin-1, R-spondin-2 peptide No No - - 2024-10-30 Yes
      LGR4 LGR4 A orphans A Human Cryo-EM 8WVV - 3.4 A Inactive 8 75 - - - - - - Apo (no ligand)
      none Apo (no ligand) R-spondin-3, R-spondin-4, R-spondin-1, R-spondin-2 peptide No No - - 2024-10-30 Yes
      LGR4 LGR4 A orphans A Human Cryo-EM 8WVX - 3.3 A Inactive 8 76 - - - - - - Norrin
      peptide Agonist R-spondin-3, R-spondin-4, R-spondin-1, R-spondin-2 peptide No No - - 2024-10-30 Yes
      LGR4 LGR4 A orphans A Human Cryo-EM 8WVY - 3.3 A Inactive 8 77 - - - - - - Norrin
      peptide Agonist R-spondin-3, R-spondin-4, R-spondin-1, R-spondin-2 peptide No No - - 2024-10-30 Yes
      O51G2 OR51G2 Odorant family 51 O1 Human Cryo-EM 8UXV - 3.2 A Active - 96 Gs αs Mini-Gs 56 - Nanobody-35 Apo (no ligand)
      none Apo (no ligand) - - No No de March CA, Ma N, Billesbolle CB, Tewari J, Llinas Del Torrent C, van der Velden WJC, Ojiro I, Takayama I, Faust B, Li L, Vaidehi N, Manglik A, Matsunami H 10.1038/S41586-024-08126-0 2024-10-30 Yes
      OR1F1 OR1F1 Odorant family 1 O2 Human Cryo-EM 8UXY - 3.3 A Active - 94 Gs αs Mini-Gs 56 - Nanobody-35 l-Menthol
      small-molecule Agonist - - No No de March CA, Ma N, Billesbolle CB, Tewari J, Llinas Del Torrent C, van der Velden WJC, Ojiro I, Takayama I, Faust B, Li L, Vaidehi N, Manglik A, Matsunami H 10.1038/S41586-024-08126-0 2024-10-30 Yes
      OR2T2 OR2T2 Odorant family 2 O2 Human Cryo-EM 8UY0 - 3.2 A Active - 89 Gs αs Mini-Gs 55 - Nanobody-35 (5S)-2-methyl-5-(prop-1-en-2-yl)cyclohex-2-en-1-one
      small-molecule Agonist - - No No de March CA, Ma N, Billesbolle CB, Tewari J, Llinas Del Torrent C, van der Velden WJC, Ojiro I, Takayama I, Faust B, Li L, Vaidehi N, Manglik A, Matsunami H 10.1038/S41586-024-08126-0 2024-10-30 Yes
      OR4D5 OR4D5 Odorant family 4 O2 Human Cryo-EM 8UYQ - 3.5 A Active - 93 Gs αs Mini-Gs 55 - Nanobody-35 (2R)-2-methyl-1,3-thiazolidine
      small-molecule Agonist - - No No de March CA, Ma N, Billesbolle CB, Tewari J, Llinas Del Torrent C, van der Velden WJC, Ojiro I, Takayama I, Faust B, Li L, Vaidehi N, Manglik A, Matsunami H 10.1038/S41586-024-08126-0 2024-10-30 Yes
      B1B1U5 Rhodopsin Opsins A Hasarius adansoni Cryo-EM 9EPQ - 4.2 R Active 100 86 Gi/o αi1 - 65 - - 11,20-Ethanoretinal
      small-molecule Agonist - - No No - - 2024-10-23 Yes
      B1B1U5 Rhodopsin Opsins A Hasarius adansoni Cryo-EM 9EPP - 4.1 R Active 100 87 Gi/o αi1 - 63 - - 11,20-Ethanoretinal
      small-molecule Agonist - - No No - - 2024-10-23 Yes
      HRH3 H3 Histamine A Human Cryo-EM 8YN7 - 2.8 R Active 100 64 Gi/o αo Mini-Go 61 - scFv16 [(2R)-3-[(E)-hexadec-9-enoyl]oxy-2-octadecanoyloxypropyl] 2-(trimethylazaniumyl)ethyl phosphate
      lipid Agonist histamine small-molecule No No - - 2024-10-16 Yes
      HRH3 H3 Histamine A Human Cryo-EM 8YN8 - 2.8 R Active 100 64 Gi/o αo Mini-Go 61 - scFv16 proxyfan
      small-molecule Agonist histamine small-molecule No No - - 2024-10-16 Yes
      PTH1R PTH1 Parathyroid hormone B1 Human Cryo-EM 9JR3 - 2.8 R Active 100 60 Gq/11 αq Mini-Gq 57 - scFv16 Parathyroid hormone
      peptide Agonist TIP39, PTHrP-(1-36), PTHrP, PTH peptide No No - - 2024-10-16 Yes
      PTH1R PTH1 Parathyroid hormone B1 Human Cryo-EM 9JR2 - 2.8 R Active 100 59 Gq/11 αq Mini-Gq 57 - scFv16 Parathyroid hormone
      peptide Agonist TIP39, PTHrP-(1-36), PTHrP, PTH peptide No No - - 2024-10-16 Yes
      TAAR1 TA1 Trace amine A Human Cryo-EM 9JKQ 9JKQ_refined 2.7 R Active 100 87 Gs αs - 60 BRIL Nanobody-35 METHAMPHETAMINE
      small-molecule Agonist CHEMBL1160703, dopamine, octopamine, 3-iodothyronamine, tyramine, β-phenylethylamine, (+)-Octopamine small-molecule No No Lin Y, Wang J, Shi F, Yang L, Wu S, Qiao A, Ye S 10.1021/ACS.JMEDCHEM.4C01961 2024-10-16 Yes
      GPBAR GPBA Bile acid A Human Cryo-EM 9GYO - 2.5 R Active 100 83 Gs αs Mini-Gs 59 BRIL Nanobody-35 CHEMBL2331646
      small-molecule Agonist lithocholic acid, deoxycholic acid, cholic acid, chenodeoxycholic acid small-molecule No No - - 2024-10-09 Yes
      HRH1 H1 Histamine A Human Cryo-EM 8YN2 - 2.7 R Active 100 56 Gq/11 αq Mini-Gq 64 - scFv16 histamine
      small-molecule Agonist histamine small-molecule No No Zhang X, Liu G, Zhong YN, Zhang R, Yang CC, Niu C, Pu X, Sun J, Zhang T, Yang L, Zhang C, Li X, Shen X, Xiao P, Sun JP, Gong W 10.1038/S41467-024-52585-Y 2024-10-09 Yes
      HRH2 H2 Histamine A Human Cryo-EM 8YN4 - 3.0 R Active 100 75 Gq/11 αq Mini-Gq 64 - scFv16 histamine
      small-molecule Agonist histamine small-molecule No No Zhang X, Liu G, Zhong YN, Zhang R, Yang CC, Niu C, Pu X, Sun J, Zhang T, Yang L, Zhang C, Li X, Shen X, Xiao P, Sun JP, Gong W 10.1038/S41467-024-52585-Y 2024-10-09 Yes
      HRH2 H2 Histamine A Human Cryo-EM 8YN3 - 2.6 R Active 100 78 Gs αs Mini-Gq 60 - Nanobody-35 histamine
      small-molecule Agonist histamine small-molecule No No Zhang X, Liu G, Zhong YN, Zhang R, Yang CC, Niu C, Pu X, Sun J, Zhang T, Yang L, Zhang C, Li X, Shen X, Xiao P, Sun JP, Gong W 10.1038/S41467-024-52585-Y 2024-10-09 Yes
      HRH3 H3 Histamine A Human Cryo-EM 8YN6 - 2.8 R Active 100 65 Gi/o αi1 - 63 - scFv16 imetit
      small-molecule Agonist histamine small-molecule No No Zhang X, Liu G, Zhong YN, Zhang R, Yang CC, Niu C, Pu X, Sun J, Zhang T, Yang L, Zhang C, Li X, Shen X, Xiao P, Sun JP, Gong W 10.1038/S41467-024-52585-Y 2024-10-09 Yes
      HRH3 H3 Histamine A Human Cryo-EM 8YN5 - 2.7 R Active 100 65 Gi/o αi1 - 63 - scFv16 histamine
      small-molecule Agonist histamine small-molecule No No Zhang X, Liu G, Zhong YN, Zhang R, Yang CC, Niu C, Pu X, Sun J, Zhang T, Yang L, Zhang C, Li X, Shen X, Xiao P, Sun JP, Gong W 10.1038/S41467-024-52585-Y 2024-10-09 Yes
      HRH4 H4 Histamine A Human Cryo-EM 8YN9 - 2.3 R Active 100 71 Gi/o αi1 - 63 - scFv16 histamine
      small-molecule Agonist histamine, CCL16 small-molecule No No Zhang X, Liu G, Zhong YN, Zhang R, Yang CC, Niu C, Pu X, Sun J, Zhang T, Yang L, Zhang C, Li X, Shen X, Xiao P, Sun JP, Gong W 10.1038/S41467-024-52585-Y 2024-10-09 Yes
      HRH4 H4 Histamine A Human Cryo-EM 8YNA - 2.6 R Active 100 71 Gi/o αi1 - 63 - scFv16 immepip
      small-molecule Agonist histamine, CCL16 small-molecule No No - - 2024-10-09 Yes
      CASR CaS Calcium-sensing C Human Cryo-EM 9C1P - 2.8 A Inactive - 72 - - - - - - (5R)-N-[2-(1,2-benzothiazol-3-yl)ethyl]-1-methyl-2,3,4,5-tetrahydro-1H-1-benzazepin-5-amine
      small-molecule PAM spermine, Mg2+, L-tryptophan, Ca2+ small-molecule No No - - 2024-10-02 Yes
      CASR CaS Calcium-sensing C Human Cryo-EM 9C2F - 2.8 A Inactive - 71 - - - - - - (1R)-1-(2H-1,3-benzodioxol-4-yl)-N-[2-(1,2-benzothiazol-3-yl)ethyl]ethan-1-amine
      small-molecule PAM spermine, Mg2+, L-tryptophan, Ca2+ small-molecule No No - - 2024-10-02 Yes
      EDNRB ETB Endothelin A Human Cryo-EM 8ZRT - 3.6 R Active 83 64 - - - - - - ENDOTHELIN
      protein Agonist endothelin-2, endothelin-3, endothelin-1 peptide No No Tani K, Maki-Yonekura S, Kanno R, Negami T, Hamaguchi T, Hall M, Mizoguchi A, Humbel BM, Terada T, Yonekura K, Doi T 10.1038/S42003-024-06905-Z 2024-10-02 Yes
      EDNRB ETB Endothelin A Human Cryo-EM 8XWP 8XWP_refined 3.2 R Active 100 68 Gi/o αi1 - 62 - scFv16 ENDOTHELIN
      protein Agonist endothelin-2, endothelin-3, endothelin-1 peptide No No Tani K, Maki-Yonekura S, Kanno R, Negami T, Hamaguchi T, Hall M, Mizoguchi A, Humbel BM, Terada T, Yonekura K, Doi T 10.1038/S42003-024-06905-Z 2024-10-02 Yes
      CCR8CCR8
      GPR55GPR55
      GPR55GPR55
      LPAR1LPA1
      LPAR1LPA1
      LPAR1LPA1
      AA2ARA2A
      HCAR3HCA3
      MCHR1MCH1
      MCHR1MCH1
      FFAR1FFA1
      FFAR2FFA2
      MRGRDMRGPRD
      MRGRDMRGPRD
      S1PR1S1P1
      XCR1XCR1
      APJapelin
      GPR6GPR6
      GPR6GPR6
      GPR6GPR6
      GPR6GPR6
      LGR4LGR4
      LGR4LGR4
      LGR4LGR4
      LGR4LGR4
      PD2R2DP2
      PD2R2DP2
      PD2R2DP2
      GLP1RGLP-1
      GRM2mGlu2
      GRM4mGlu4
      GRM4mGlu4
      LPAR1LPA1
      OPRDδ
      T2R14TAS2R14
      CNR1CB1
      CNR1CB1
      CNR1CB1
      CNR2CB2
      HCAR3HCA3
      OPSDRhodopsin
      OPSDRhodopsin
      OPSDRhodopsin
      ADRB2β2
      ADRB2β2
      ADRB2β2
      GLP1RGLP-1
      GPR55GPR55
      GPR55GPR55
      MCHR1MCH1
      MCHR1MCH1
      MCHR1MCH1
      MCHR1MCH1
      MCHR1MCH1
      MCHR1MCH1
      MCHR1MCH1
      PTAFRPAF
      GRM5mGlu5
      GRM5mGlu5
      GRM5mGlu5
      GRM5mGlu5
      GRM5mGlu5
      GRM5mGlu5
      GRM5mGlu5
      MRGX4MRGPRX4
      MRGX4MRGPRX4
      B1B1U5Rhodopsin
      GP119GPR119
      GRM2mGlu2
      KISSRkisspeptin
      KISSRkisspeptin
      KISSRkisspeptin
      LGR4LGR4
      LGR4LGR4
      LGR4LGR4
      LGR4LGR4
      LGR4LGR4
      O51G2OR51G2
      OR1F1OR1F1
      OR2T2OR2T2
      OR4D5OR4D5
      B1B1U5Rhodopsin
      B1B1U5Rhodopsin
      HRH3H3
      HRH3H3
      PTH1RPTH1
      PTH1RPTH1
      TAAR1TA1
      GPBARGPBA
      HRH1H1
      HRH2H2
      HRH2H2
      HRH3H3
      HRH3H3
      HRH4H4
      HRH4H4
      CASRCaS
      CASRCaS
      EDNRBETB
      EDNRBETB
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      PDB UniProt IUPHAR Rec. family Class Species State PDB Date