G-protein coupled receptor
├──motilin receptor ...
│  ├──motilin receptor (human) *
│  └──Motilin receptor *
├──Motilin receptor ...
│  ├──motilin receptor (human) *
│  └──Motilin receptor *
├──Ghrelin receptor ...
│  ├──Ghrelin receptor *
│  ├──Ghrelin receptor *
│  └──Ghrelin receptor *
├──growth hormone secretagogue receptor ...
│  ├──Ghrelin receptor *
│  ├──Ghrelin receptor *
│  └──Ghrelin receptor *
├──Neuropeptide S receptor ...
│  └──NPS receptor * ...
│     ├──NPS receptor
│     └──NPS receptor
├──neuropeptide S receptor ...
│  └──NPS receptor * ...
│     ├──NPS receptor
│     └──NPS receptor
├──Opsin-like receptor ...
│  └──Opsin-like receptor - unspecified 1 ...
│     ├──Opsin-like receptor - unspecified 1
│     └──Opsin-like receptor - unspecified 1
├──TRH receptor ...
│  ├──TRH receptor
│  ├──TRH receptor
│  └──TRH receptor
├──apelin receptor ...
│  └──APJ receptor * ...
│     ├──APJ receptor
│     ├──APJ receptor
│     └──APJ receptor
├──Apelin receptor ...
│  └──APJ receptor * ...
│     ├──APJ receptor
│     ├──APJ receptor
│     └──APJ receptor
├──G protein-coupled bile acid receptor ...
│  └──GPBA receptor ...
│     ├──GPBA receptor
│     ├──GPBA receptor
│     └──GPBA receptor
├──Orphan (Chemokine receptor-like) ...
│  └──Orphan (Chemokine receptor-like) - unspecified 1 ...
│     ├──Orphan (Chemokine receptor-like) - unspecified 1
│     ├──Orphan (Chemokine receptor-like) - unspecified 1
│     └──Orphan (Chemokine receptor-like) - unspecified 1
├──Orphan (melatonin-like) receptor ...
│  └──Orphan (melatonin-like) receptor - unspecified 1 ...
│     ├──Orphan (melatonin-like) receptor - unspecified 1
│     ├──Orphan (melatonin-like) receptor - unspecified 1
│     └──Orphan (melatonin-like) receptor - unspecified 1
├──Orphan (P2Y-like) receptor ...
│  └──Orphan (P2Y-like) receptor - unspecified 1 ...
│     ├──Orphan (P2Y-like) receptor - unspecified 1
│     ├──Orphan (P2Y-like) receptor - unspecified 1
│     └──Orphan (P2Y-like) receptor - unspecified 1
├──OrphanA7 receptor ...
│  └──OrphanA7 receptor - unspecified 1 ...
│     ├──OrphanA7 receptor - unspecified 1
│     ├──OrphanA7 receptor - unspecified 1
│     └──OrphanA7 receptor - unspecified 1
├──Peptide P518 receptor ...
│  └──QRFP receptor ...
│     ├──QRFP receptor
│     ├──QRFP receptor
│     └──QRFP receptor
├──platelet-activating factor receptor ...
│  └──PAF receptor * ...
│     ├──PAF receptor
│     ├──PAF receptor
│     └──PAF receptor
├──Platelet-activating factor receptor ...
│  └──PAF receptor * ...
│     ├──PAF receptor
│     ├──PAF receptor
│     └──PAF receptor
├──Prolactin releasing peptide receptor ...
│  └──PRRP receptor * ...
│     ├──PRRP receptor
│     ├──PRRP receptor
│     └──PRRP receptor
├──prolactin-releasing peptide receptor ...
│  └──PRRP receptor * ...
│     ├──PRRP receptor
│     ├──PRRP receptor
│     └──PRRP receptor
├──Trace Amine receptor ...
│  └──TA1 receptor ...
│     ├──TA1 receptor
│     ├──TA1 receptor
│     └──TA1 receptor
├──Urotensin receptor ...
│  └──UT receptor ...
│     ├──UT receptor
│     ├──UT receptor
│     └──UT receptor
├──OrphanA2 receptor ...
│  ├──OrphanA2 receptor - unspecified 1 ...
│  │  └──OrphanA2 receptor - unspecified 1
│  └──OrphanA2 receptor - unspecified 2 ...
│     ├──OrphanA2 receptor - unspecified 2
│     └──OrphanA2 receptor - unspecified 2
├──GnRH receptor ...
│  ├──GnRH receptor - unspecified 1 * ...
│  │  └──GnRH receptor - unspecified 1
│  └──GnRH receptor - unspecified 2 * ...
│     ├──GnRH receptor - unspecified 2
│     ├──GnRH receptor - unspecified 2
│     └──GnRH receptor - unspecified 2
├──gonadotropin-releasing hormone I receptor ...
│  ├──GnRH receptor - unspecified 1 * ...
│  │  └──GnRH receptor - unspecified 1
│  └──GnRH receptor - unspecified 2 * ...
│     ├──GnRH receptor - unspecified 2
│     ├──GnRH receptor - unspecified 2
│     └──GnRH receptor - unspecified 2
├──Melanin-concentrating hormone receptor ...
│  ├──MCH2 receptor ...
│  │  └──MCH2 receptor
│  └──MCH1 receptor ...
│     ├──MCH1 receptor
│     ├──MCH1 receptor
│     └──MCH1 receptor
├──Neuropeptide W/neuropeptide B receptor ...
│  ├──NPBW2 receptor ...
│  │  └──NPBW2 receptor
│  └──NPBW1 receptor ...
│     ├──NPBW1 receptor
│     ├──NPBW1 receptor
│     └──NPBW1 receptor
├──OrphanA3 receptor ...
│  ├──OrphanA3 receptor - unspecified 1 ...
│  │  └──OrphanA3 receptor - unspecified 1
│  └──OrphanA3 receptor - unspecified 2 ...
│     ├──OrphanA3 receptor - unspecified 2
│     ├──OrphanA3 receptor - unspecified 2
│     └──OrphanA3 receptor - unspecified 2
├──OrphanA13 receptor ...
│  ├──OrphanA13 receptor - unspecified 1 ...
│  │  └──OrphanA13 receptor - unspecified 1
│  └──OrphanA13 receptor - unspecified 2 ...
│     ├──OrphanA13 receptor - unspecified 2
│     ├──OrphanA13 receptor - unspecified 2
│     └──OrphanA13 receptor - unspecified 2
├──Neuropeptide FF/neuropeptide AF receptor ...
│  ├──NPFF1 receptor ...
│  │  ├──NPFF1 receptor
│  │  └──NPFF1 receptor
│  └──NPFF2 receptor ...
│     ├──NPFF2 receptor
│     ├──NPFF2 receptor
│     └──NPFF2 receptor
├──OrphanA12 receptor ...
│  ├──OrphanA12 receptor - unspecified 1 ...
│  │  ├──OrphanA12 receptor - unspecified 1
│  │  └──OrphanA12 receptor - unspecified 1
│  └──OrphanA12 receptor - unspecified 2 ...
│     ├──OrphanA12 receptor - unspecified 2
│     ├──OrphanA12 receptor - unspecified 2
│     └──OrphanA12 receptor - unspecified 2
├──OrphanA14 receptor ...
│  ├──OrphanA14 receptor - unspecified 1 ...
│  │  ├──OrphanA14 receptor - unspecified 1
│  │  └──OrphanA14 receptor - unspecified 1
│  └──OrphanA14 receptor - unspecified 2 ...
│     ├──OrphanA14 receptor - unspecified 2
│     ├──OrphanA14 receptor - unspecified 2
│     └──OrphanA14 receptor - unspecified 2
├──Angiotensin receptor ...
│  ├──AT1 receptor ...
│  │  ├──AT1 receptor
│  │  ├──AT1 receptor
│  │  └──AT1 receptor
│  └──AT2 receptor ...
│     ├──AT2 receptor
│     ├──AT2 receptor
│     └──AT2 receptor
├──Cannabinoid receptor ...
│  ├──CB1 receptor ...
│  │  ├──CB1 receptor
│  │  ├──CB1 receptor
│  │  └──CB1 receptor
│  └──CB2 receptor ...
│     ├──CB2 receptor
│     ├──CB2 receptor
│     └──CB2 receptor
├──fMet-Leu-Phe receptor ...
│  ├──fMet-Leu-Phe receptor (human) *
│  ├──fMet-Leu-Phe receptor (mouse) *
│  ├──N-formylpeptide receptor - unspecified 1 * ...
│  │  └──N-formylpeptide receptor - unspecified 1
│  └──N-formylpeptide receptor - unspecified 2 * ...
│     ├──N-formylpeptide receptor - unspecified 2
│     ├──N-formylpeptide receptor - unspecified 2
│     └──N-formylpeptide receptor - unspecified 2
├──KiSS1-derived peptide receptor ...
│  ├──KiSS1 receptor ...
│  │  ├──KiSS1 receptor *
│  │  ├──KiSS1 receptor *
│  │  └──KiSS1 receptor *
│  └──KiSS-1 receptor ...
│     ├──KiSS1 receptor *
│     ├──KiSS1 receptor *
│     └──KiSS1 receptor *
├──Melatonin receptor ...
│  ├──MT1 receptor ...
│  │  ├──MT1 receptor
│  │  ├──MT1 receptor
│  │  └──MT1 receptor
│  └──MT2 receptor ...
│     ├──MT2 receptor
│     ├──MT2 receptor
│     └──MT2 receptor
├──N-formylpeptide receptor ...
│  ├──fMet-Leu-Phe receptor (human) *
│  ├──fMet-Leu-Phe receptor (mouse) *
│  ├──N-formylpeptide receptor - unspecified 1 * ...
│  │  └──N-formylpeptide receptor - unspecified 1
│  └──N-formylpeptide receptor - unspecified 2 * ...
│     ├──N-formylpeptide receptor - unspecified 2
│     ├──N-formylpeptide receptor - unspecified 2
│     └──N-formylpeptide receptor - unspecified 2
├──Neurotensin receptor ...
│  ├──NTS1 receptor ...
│  │  ├──NTS1 receptor
│  │  ├──NTS1 receptor
│  │  └──NTS1 receptor
│  └──NTS2 receptor ...
│     ├──NTS2 receptor
│     ├──NTS2 receptor
│     └──NTS2 receptor
├──Orexin (hypocretin) receptor ...
│  ├──OX1 receptor ...
│  │  ├──OX1 receptor
│  │  ├──OX1 receptor
│  │  └──OX1 receptor
│  └──OX2 receptor ...
│     ├──OX2 receptor
│     ├──OX2 receptor
│     └──OX2 receptor
├──Orphan receptor ...
│  ├──Orphan receptor - unspecified 1 ...
│  │  ├──Orphan receptor - unspecified 1
│  │  ├──Orphan receptor - unspecified 1
│  │  └──Orphan receptor - unspecified 1
│  └──Orphan receptor - unspecified 2 ...
│     ├──Orphan receptor - unspecified 2
│     ├──Orphan receptor - unspecified 2
│     └──Orphan receptor - unspecified 2
├──OrphanA4 receptor ...
│  ├──OrphanA4 receptor - unspecified 1 ...
│  │  ├──OrphanA4 receptor - unspecified 1
│  │  ├──OrphanA4 receptor - unspecified 1
│  │  └──OrphanA4 receptor - unspecified 1
│  └──OrphanA4 receptor - unspecified 2 ...
│     ├──OrphanA4 receptor - unspecified 2
│     ├──OrphanA4 receptor - unspecified 2
│     └──OrphanA4 receptor - unspecified 2
├──OrphanA6 receptor ...
│  ├──OrphanA6 receptor - unspecified 1 ...
│  │  ├──OrphanA6 receptor - unspecified 1
│  │  ├──OrphanA6 receptor - unspecified 1
│  │  └──OrphanA6 receptor - unspecified 1
│  └──OrphanA6 receptor - unspecified 2 ...
│     ├──OrphanA6 receptor - unspecified 2
│     ├──OrphanA6 receptor - unspecified 2
│     └──OrphanA6 receptor - unspecified 2
├──OrphanA9 receptor ...
│  ├──OrphanA9 receptor - unspecified 1 ...
│  │  ├──OrphanA9 receptor - unspecified 1
│  │  ├──OrphanA9 receptor - unspecified 1
│  │  └──OrphanA9 receptor - unspecified 1
│  └──OrphanA9 receptor - unspecified 2 ...
│     ├──OrphanA9 receptor - unspecified 2
│     ├──OrphanA9 receptor - unspecified 2
│     └──OrphanA9 receptor - unspecified 2
├──OrphanA15 receptor ...
│  ├──OrphanA15 receptor - unspecified 1 ...
│  │  ├──OrphanA15 receptor - unspecified 1
│  │  ├──OrphanA15 receptor - unspecified 1
│  │  └──OrphanA15 receptor - unspecified 1
│  └──OrphanA15 receptor - unspecified 2 ...
│     ├──OrphanA15 receptor - unspecified 2
│     ├──OrphanA15 receptor - unspecified 2
│     └──OrphanA15 receptor - unspecified 2
├──bradykinin receptor ...
│  ├──B1 bradykinin receptor *
│  ├──B2 bradykinin receptor *
│  ├──B1 receptor * ...
│  │  ├──B1 receptor
│  │  ├──B1 receptor
│  │  └──B1 receptor
│  └──B2 receptor * ...
│     ├──B2 receptor
│     ├──B2 receptor
│     └──B2 receptor
├──Bradykinin receptor ...
│  ├──B1 bradykinin receptor *
│  ├──B2 bradykinin receptor *
│  ├──B1 receptor * ...
│  │  ├──B1 receptor
│  │  ├──B1 receptor
│  │  └──B1 receptor
│  └──B2 receptor * ...
│     ├──B2 receptor
│     ├──B2 receptor
│     └──B2 receptor
├──Cholecystokinin receptor ...
│  ├──cholecystokinin receptor 1 *
│  ├──cholecystokinin receptor 2 *
│  ├──CCK1 receptor * ...
│  │  ├──CCK1 receptor
│  │  ├──CCK1 receptor
│  │  └──CCK1 receptor
│  └──CCK2 receptor * ...
│     ├──CCK2 receptor
│     ├──CCK2 receptor
│     └──CCK2 receptor
├──cholecystokinin receptor ...
│  ├──cholecystokinin receptor 1 *
│  ├──cholecystokinin receptor 2 *
│  ├──CCK1 receptor * ...
│  │  ├──CCK1 receptor
│  │  ├──CCK1 receptor
│  │  └──CCK1 receptor
│  └──CCK2 receptor * ...
│     ├──CCK2 receptor
│     ├──CCK2 receptor
│     └──CCK2 receptor
├──Endothelin receptor ...
│  ├──endothelin receptor A *
│  ├──endothelin receptor B *
│  ├──ETA receptor * ...
│  │  ├──ETA receptor
│  │  ├──ETA receptor
│  │  └──ETA receptor
│  └──ETB receptor * ...
│     ├──ETB receptor
│     ├──ETB receptor
│     └──ETB receptor
├──endothelin receptor ...
│  ├──endothelin receptor A *
│  ├──endothelin receptor B *
│  ├──ETA receptor * ...
│  │  ├──ETA receptor
│  │  ├──ETA receptor
│  │  └──ETA receptor
│  └──ETB receptor * ...
│     ├──ETB receptor
│     ├──ETB receptor
│     └──ETB receptor
├──OrphanLGR receptor ...
│  ├──OrphanLGR receptor - unspecified 1 ...
│  │  └──OrphanLGR receptor - unspecified 1
│  ├──OrphanLGR receptor - unspecified 2 ...
│  │  ├──OrphanLGR receptor - unspecified 2
│  │  ├──OrphanLGR receptor - unspecified 2
│  │  └──OrphanLGR receptor - unspecified 2
│  └──OrphanLGR receptor - unspecified 3 ...
│     ├──OrphanLGR receptor - unspecified 3
│     ├──OrphanLGR receptor - unspecified 3
│     └──OrphanLGR receptor - unspecified 3
├──Prokineticin receptor ...
│  ├──prokineticin receptor 1 *
│  ├──prokineticin receptor 2 *
│  ├──PKR1 receptor * ...
│  │  ├──PKR1 receptor
│  │  ├──PKR1 receptor
│  │  └──PKR1 receptor
│  └──PKR2 receptor * ...
│     ├──PKR2 receptor
│     ├──PKR2 receptor
│     └──PKR2 receptor
├──prokineticin receptor ...
│  ├──prokineticin receptor 1 *
│  ├──prokineticin receptor 2 *
│  ├──PKR1 receptor * ...
│  │  ├──PKR1 receptor
│  │  ├──PKR1 receptor
│  │  └──PKR1 receptor
│  └──PKR2 receptor * ...
│     ├──PKR2 receptor
│     ├──PKR2 receptor
│     └──PKR2 receptor
├──Neuromedin U receptor ...
│  ├──neuromedin-U receptor 1 *
│  ├──neuromedin-U receptor 2 * ...
│  │  └──neuromedin-U receptor 2 (human)
│  ├──NMU1 receptor * ...
│  │  ├──NMU1 receptor
│  │  ├──NMU1 receptor
│  │  └──NMU1 receptor
│  └──NMU2 receptor * ...
│     ├──NMU2 receptor
│     ├──NMU2 receptor
│     └──NMU2 receptor
├──neuromedin-U receptor ...
│  ├──neuromedin-U receptor 1 *
│  ├──neuromedin-U receptor 2 * ...
│  │  └──neuromedin-U receptor 2 (human)
│  ├──NMU1 receptor * ...
│  │  ├──NMU1 receptor
│  │  ├──NMU1 receptor
│  │  └──NMU1 receptor
│  └──NMU2 receptor * ...
│     ├──NMU2 receptor
│     ├──NMU2 receptor
│     └──NMU2 receptor
├──Anaphylatoxin receptor ...
│  ├──Anaphylatoxin receptor - unspecified 1 ...
│  │  ├──Anaphylatoxin receptor - unspecified 1
│  │  ├──Anaphylatoxin receptor - unspecified 1
│  │  └──Anaphylatoxin receptor - unspecified 1
│  ├──Anaphylatoxin receptor - unspecified 2 ...
│  │  ├──Anaphylatoxin receptor - unspecified 2
│  │  ├──Anaphylatoxin receptor - unspecified 2
│  │  └──Anaphylatoxin receptor - unspecified 2
│  └──Anaphylatoxin receptor - unspecified 3 ...
│     ├──Anaphylatoxin receptor - unspecified 3
│     ├──Anaphylatoxin receptor - unspecified 3
│     └──Anaphylatoxin receptor - unspecified 3
├──Nicotinic acid receptor ...
│  ├──G-protein coupled receptor 81 *
│  ├──nicotinic acid receptor 1 *
│  ├──nicotinic acid receptor 2 *
│  ├──Nicotinic acid receptor - unspecified 1 * ...
│  │  └──Nicotinic acid receptor - unspecified 1
│  ├──Nicotinic acid receptor - unspecified 2 * ...
│  │  ├──Nicotinic acid receptor - unspecified 2
│  │  └──Nicotinic acid receptor - unspecified 2
│  └──Nicotinic acid receptor - unspecified 3 * ...
│     ├──Nicotinic acid receptor - unspecified 3
│     ├──Nicotinic acid receptor - unspecified 3
│     └──Nicotinic acid receptor - unspecified 3
├──nicotinic acid receptor ...
│  ├──G-protein coupled receptor 81 *
│  ├──nicotinic acid receptor 1 *
│  ├──nicotinic acid receptor 2 *
│  ├──Nicotinic acid receptor - unspecified 1 * ...
│  │  └──Nicotinic acid receptor - unspecified 1
│  ├──Nicotinic acid receptor - unspecified 2 * ...
│  │  ├──Nicotinic acid receptor - unspecified 2
│  │  └──Nicotinic acid receptor - unspecified 2
│  └──Nicotinic acid receptor - unspecified 3 * ...
│     ├──Nicotinic acid receptor - unspecified 3
│     ├──Nicotinic acid receptor - unspecified 3
│     └──Nicotinic acid receptor - unspecified 3
├──OrphanA1 receptor ...
│  ├──OrphanA1 receptor - unspecified 1 ...
│  │  ├──OrphanA1 receptor - unspecified 1
│  │  ├──OrphanA1 receptor - unspecified 1
│  │  └──OrphanA1 receptor - unspecified 1
│  ├──OrphanA1 receptor - unspecified 2 ...
│  │  ├──OrphanA1 receptor - unspecified 2
│  │  ├──OrphanA1 receptor - unspecified 2
│  │  └──OrphanA1 receptor - unspecified 2
│  └──OrphanA1 receptor - unspecified 3 ...
│     ├──OrphanA1 receptor - unspecified 3
│     ├──OrphanA1 receptor - unspecified 3
│     └──OrphanA1 receptor - unspecified 3
├──OrphanSREB receptor ...
│  ├──OrphanSREB receptor - unspecified 1 ...
│  │  ├──OrphanSREB receptor - unspecified 1
│  │  ├──OrphanSREB receptor - unspecified 1
│  │  └──OrphanSREB receptor - unspecified 1
│  ├──OrphanSREB receptor - unspecified 2 ...
│  │  ├──OrphanSREB receptor - unspecified 2
│  │  ├──OrphanSREB receptor - unspecified 2
│  │  └──OrphanSREB receptor - unspecified 2
│  └──OrphanSREB receptor - unspecified 3 ...
│     ├──OrphanSREB receptor - unspecified 3
│     ├──OrphanSREB receptor - unspecified 3
│     └──OrphanSREB receptor - unspecified 3
├──Bombesin receptor ...
│  ├──bombesin receptor subtype-3 *
│  ├──gastrin-releasing peptide receptor *
│  ├──neuromedin-B receptor *
│  ├──BB1 receptor * ...
│  │  ├──BB1 receptor
│  │  ├──BB1 receptor
│  │  └──BB1 receptor
│  ├──BB2 receptor * ...
│  │  ├──BB2 receptor
│  │  ├──BB2 receptor
│  │  └──BB2 receptor
│  └──BB3 receptor * ...
│     ├──BB3 receptor
│     ├──BB3 receptor
│     └──BB3 receptor
├──bombesin receptor ...
│  ├──bombesin receptor subtype-3 *
│  ├──gastrin-releasing peptide receptor *
│  ├──neuromedin-B receptor *
│  ├──BB1 receptor * ...
│  │  ├──BB1 receptor
│  │  ├──BB1 receptor
│  │  └──BB1 receptor
│  ├──BB2 receptor * ...
│  │  ├──BB2 receptor
│  │  ├──BB2 receptor
│  │  └──BB2 receptor
│  └──BB3 receptor * ...
│     ├──BB3 receptor
│     ├──BB3 receptor
│     └──BB3 receptor
├──galanin receptor ...
│  ├──galanin receptor 1 *
│  ├──galanin receptor 2 *
│  ├──galanin receptor 3 *
│  ├──GAL1 receptor * ...
│  │  ├──GAL1 receptor
│  │  ├──GAL1 receptor
│  │  └──GAL1 receptor
│  ├──GAL2 receptor * ...
│  │  ├──GAL2 receptor
│  │  ├──GAL2 receptor
│  │  └──GAL2 receptor
│  └──GAL3 receptor * ...
│     ├──GAL3 receptor
│     ├──GAL3 receptor
│     └──GAL3 receptor
├──Galanin receptor ...
│  ├──galanin receptor 1 *
│  ├──galanin receptor 2 *
│  ├──galanin receptor 3 *
│  ├──GAL1 receptor * ...
│  │  ├──GAL1 receptor
│  │  ├──GAL1 receptor
│  │  └──GAL1 receptor
│  ├──GAL2 receptor * ...
│  │  ├──GAL2 receptor
│  │  ├──GAL2 receptor
│  │  └──GAL2 receptor
│  └──GAL3 receptor * ...
│     ├──GAL3 receptor
│     ├──GAL3 receptor
│     └──GAL3 receptor
├──Relaxin peptide receptor ...
│  ├──RXFP4 receptor ...
│  │  ├──RXFP4 receptor
│  │  └──RXFP4 receptor
│  ├──RXFP1 receptor ...
│  │  ├──RXFP1 receptor
│  │  ├──RXFP1 receptor
│  │  └──RXFP1 receptor
│  ├──RXFP2 receptor ...
│  │  ├──RXFP2 receptor
│  │  ├──RXFP2 receptor
│  │  └──RXFP2 receptor
│  └──RXFP3 receptor ...
│     ├──RXFP3 receptor
│     ├──RXFP3 receptor
│     └──RXFP3 receptor
├──free fatty acid receptor ...
│  ├──free fatty acid receptor 1 *
│  ├──free fatty acid receptor 2 *
│  ├──free fatty acid receptor 3 *
│  ├──Free fatty acid receptor - unspecified 1 * ...
│  │  └──Free fatty acid receptor - unspecified 1
│  ├──FFA2 receptor * ...
│  │  ├──FFA2 receptor
│  │  └──FFA2 receptor
│  ├──FFA1 receptor * ...
│  │  ├──FFA1 receptor
│  │  ├──FFA1 receptor
│  │  └──FFA1 receptor
│  └──FFA3 receptor * ...
│     ├──FFA3 receptor
│     ├──FFA3 receptor
│     └──FFA3 receptor
├──Free fatty acid receptor ...
│  ├──free fatty acid receptor 1 *
│  ├──free fatty acid receptor 2 *
│  ├──free fatty acid receptor 3 *
│  ├──Free fatty acid receptor - unspecified 1 * ...
│  │  └──Free fatty acid receptor - unspecified 1
│  ├──FFA2 receptor * ...
│  │  ├──FFA2 receptor
│  │  └──FFA2 receptor
│  ├──FFA1 receptor * ...
│  │  ├──FFA1 receptor
│  │  ├──FFA1 receptor
│  │  └──FFA1 receptor
│  └──FFA3 receptor * ...
│     ├──FFA3 receptor
│     ├──FFA3 receptor
│     └──FFA3 receptor
├──Histamine receptor ...
│  ├──H1 receptor ...
│  │  ├──H1 receptor
│  │  ├──H1 receptor
│  │  └──H1 receptor
│  ├──H2 receptor ...
│  │  ├──H2 receptor
│  │  ├──H2 receptor
│  │  └──H2 receptor
│  ├──H3 receptor ...
│  │  ├──H3 receptor
│  │  ├──H3 receptor
│  │  └──H3 receptor
│  └──H4 receptor ...
│     ├──H4 receptor
│     ├──H4 receptor
│     └──H4 receptor
├──Protease-activated receptor ...
│  ├──PAR1 receptor ...
│  │  ├──PAR1 receptor
│  │  ├──PAR1 receptor
│  │  └──PAR1 receptor
│  ├──PAR2 receptor ...
│  │  ├──PAR2 receptor
│  │  ├──PAR2 receptor
│  │  └──PAR2 receptor
│  ├──PAR3 receptor ...
│  │  ├──PAR3 receptor
│  │  ├──PAR3 receptor
│  │  └──PAR3 receptor
│  └──PAR4 receptor ...
│     ├──PAR4 receptor
│     ├──PAR4 receptor
│     └──PAR4 receptor
├──SPC/LPC receptor ...
│  ├──SPC/LPC receptor - unspecified 1 ...
│  │  ├──SPC/LPC receptor - unspecified 1
│  │  ├──SPC/LPC receptor - unspecified 1
│  │  └──SPC/LPC receptor - unspecified 1
│  ├──SPC/LPC receptor - unspecified 2 ...
│  │  ├──SPC/LPC receptor - unspecified 2
│  │  ├──SPC/LPC receptor - unspecified 2
│  │  └──SPC/LPC receptor - unspecified 2
│  ├──SPC/LPC receptor - unspecified 3 ...
│  │  ├──SPC/LPC receptor - unspecified 3
│  │  ├──SPC/LPC receptor - unspecified 3
│  │  └──SPC/LPC receptor - unspecified 3
│  └──SPC/LPC receptor - unspecified 4 ...
│     ├──SPC/LPC receptor - unspecified 4
│     ├──SPC/LPC receptor - unspecified 4
│     └──SPC/LPC receptor - unspecified 4
├──glycoprotein hormone receptor ...
│  ├──lutropin-choriogonadotropic hormone receptor *
│  ├──follitropin receptor * ...
│  │  └──follitropin receptor, signal peptide removed form ...
│  │     └──follitropin receptor, signal peptide removed form (human)
│  ├──thyrotropin receptor * ...
│  │  ├──thyrotropin receptor, full-length form
│  │  └──thyrotropin receptor, signal peptide removed form
│  ├──FSH receptor * ...
│  │  ├──FSH receptor
│  │  ├──FSH receptor
│  │  └──FSH receptor
│  ├──LH receptor * ...
│  │  ├──LH receptor
│  │  ├──LH receptor
│  │  └──LH receptor
│  └──TSH receptor * ...
│     ├──TSH receptor
│     ├──TSH receptor
│     └──TSH receptor
├──Glycoprotein hormone receptor ...
│  ├──lutropin-choriogonadotropic hormone receptor *
│  ├──follitropin receptor * ...
│  │  └──follitropin receptor, signal peptide removed form ...
│  │     └──follitropin receptor, signal peptide removed form (human)
│  ├──thyrotropin receptor * ...
│  │  ├──thyrotropin receptor, full-length form
│  │  └──thyrotropin receptor, signal peptide removed form
│  ├──FSH receptor * ...
│  │  ├──FSH receptor
│  │  ├──FSH receptor
│  │  └──FSH receptor
│  ├──LH receptor * ...
│  │  ├──LH receptor
│  │  ├──LH receptor
│  │  └──LH receptor
│  └──TSH receptor * ...
│     ├──TSH receptor
│     ├──TSH receptor
│     └──TSH receptor
├──Acetylcholine (muscarinic) receptor ...
│  ├──M1 receptor ...
│  │  ├──M1 receptor
│  │  ├──M1 receptor
│  │  └──M1 receptor
│  ├──M2 receptor ...
│  │  ├──M2 receptor
│  │  ├──M2 receptor
│  │  └──M2 receptor
│  ├──M3 receptor ...
│  │  ├──M3 receptor
│  │  ├──M3 receptor
│  │  └──M3 receptor
│  ├──M4 receptor ...
│  │  ├──M4 receptor
│  │  ├──M4 receptor
│  │  └──M4 receptor
│  └──M5 receptor ...
│     ├──M5 receptor
│     ├──M5 receptor
│     └──M5 receptor
├──Adenosine receptor ...
│  ├──adenosine receptor A1 *
│  ├──adenosine receptor A2a *
│  ├──adenosine receptor A2b *
│  ├──adenosine receptor A3 *
│  ├──A1 receptor * ...
│  │  ├──A1 receptor
│  │  ├──A1 receptor
│  │  └──A1 receptor
│  ├──A2A receptor * ...
│  │  ├──A2A receptor
│  │  ├──A2A receptor
│  │  └──A2A receptor
│  ├──A2B receptor * ...
│  │  ├──A2B receptor
│  │  ├──A2B receptor
│  │  └──A2B receptor
│  └──A3 receptor * ...
│     ├──A3 receptor
│     ├──A3 receptor
│     └──A3 receptor
├──adenosine receptor ...
│  ├──adenosine receptor A1 *
│  ├──adenosine receptor A2a *
│  ├──adenosine receptor A2b *
│  ├──adenosine receptor A3 *
│  ├──A1 receptor * ...
│  │  ├──A1 receptor
│  │  ├──A1 receptor
│  │  └──A1 receptor
│  ├──A2A receptor * ...
│  │  ├──A2A receptor
│  │  ├──A2A receptor
│  │  └──A2A receptor
│  ├──A2B receptor * ...
│  │  ├──A2B receptor
│  │  ├──A2B receptor
│  │  └──A2B receptor
│  └──A3 receptor * ...
│     ├──A3 receptor
│     ├──A3 receptor
│     └──A3 receptor
├──Dopamine receptor ...
│  ├──D1 receptor ...
│  │  ├──D1 receptor
│  │  ├──D1 receptor
│  │  └──D1 receptor
│  ├──D2 receptor ...
│  │  ├──D2 receptor
│  │  ├──D2 receptor
│  │  └──D2 receptor
│  ├──D3 receptor ...
│  │  ├──D3 receptor
│  │  ├──D3 receptor
│  │  └──D3 receptor
│  ├──D4 receptor ...
│  │  ├──D4 receptor
│  │  ├──D4 receptor
│  │  └──D4 receptor
│  └──D5 receptor ...
│     ├──D5 receptor
│     ├──D5 receptor
│     └──D5 receptor
├──Neuropeptide Y receptor ...
│  ├──neuropeptide Y receptor 5 ...
│  │  ├──Y5 receptor *
│  │  ├──Y5 receptor *
│  │  └──Y5 receptor *
│  ├──Y1 receptor ...
│  │  ├──Y1 receptor
│  │  ├──Y1 receptor
│  │  └──Y1 receptor
│  ├──Y2 receptor ...
│  │  ├──Y2 receptor
│  │  ├──Y2 receptor
│  │  └──Y2 receptor
│  ├──Y4 receptor ...
│  │  ├──Y4 receptor
│  │  ├──Y4 receptor
│  │  └──Y4 receptor
│  └──Y5 receptor ...
│     ├──Y5 receptor *
│     ├──Y5 receptor *
│     └──Y5 receptor *
├──opioid receptor ...
│  ├──delta-type opioid receptor *
│  ├──kappa-type opioid receptor *
│  ├──mu-type opioid receptor *
│  ├──nociceptin receptor *
│  ├──Delta receptor * ...
│  │  ├──Delta receptor
│  │  ├──Delta receptor
│  │  └──Delta receptor
│  ├──Kappa receptor * ...
│  │  ├──Kappa receptor
│  │  ├──Kappa receptor
│  │  └──Kappa receptor
│  ├──Mu receptor * ...
│  │  ├──Mu receptor
│  │  ├──Mu receptor
│  │  └──Mu receptor
│  └──NOP receptor * ...
│     ├──NOP receptor
│     ├──NOP receptor
│     └──NOP receptor
├──Opioid receptor ...
│  ├──delta-type opioid receptor *
│  ├──kappa-type opioid receptor *
│  ├──mu-type opioid receptor *
│  ├──nociceptin receptor *
│  ├──Delta receptor * ...
│  │  ├──Delta receptor
│  │  ├──Delta receptor
│  │  └──Delta receptor
│  ├──Kappa receptor * ...
│  │  ├──Kappa receptor
│  │  ├──Kappa receptor
│  │  └──Kappa receptor
│  ├──Mu receptor * ...
│  │  ├──Mu receptor
│  │  ├──Mu receptor
│  │  └──Mu receptor
│  └──NOP receptor * ...
│     ├──NOP receptor
│     ├──NOP receptor
│     └──NOP receptor
├──Leukotriene and lipoxin receptor ...
│  ├──OXE receptor ...
│  │  └──OXE receptor
│  ├──ALX receptor ...
│  │  ├──ALX receptor
│  │  ├──ALX receptor
│  │  └──ALX receptor
│  ├──BLT1 receptor ...
│  │  ├──BLT1 receptor
│  │  ├──BLT1 receptor
│  │  └──BLT1 receptor
│  ├──BLT2 receptor ...
│  │  ├──BLT2 receptor
│  │  ├──BLT2 receptor
│  │  └──BLT2 receptor
│  ├──CysLT1 receptor ...
│  │  ├──CysLT1 receptor
│  │  ├──CysLT1 receptor
│  │  └──CysLT1 receptor
│  └──CysLT2 receptor ...
│     ├──CysLT2 receptor
│     ├──CysLT2 receptor
│     └──CysLT2 receptor
├──tachykinin receptor ...
│  ├──substance-K receptor *
│  ├──neuromedin-K receptor * ...
│  │  ├──NK3 receptor *
│  │  └──NK3 receptor *
│  ├──NK3 receptor * ...
│  │  ├──NK3 receptor *
│  │  └──NK3 receptor *
│  ├──NK3 receptor * ...
│  │  ├──NK3 receptor *
│  │  └──NK3 receptor *
│  ├──NK1 receptor * ...
│  │  ├──NK1 receptor *
│  │  ├──NK1 receptor *
│  │  └──NK1 receptor *
│  ├──NK2 receptor * ...
│  │  ├──NK2 receptor
│  │  ├──NK2 receptor
│  │  └──NK2 receptor
│  └──substance-P receptor * ...
│     ├──NK1 receptor *
│     ├──NK1 receptor *
│     └──NK1 receptor *
├──Tachykinin receptor ...
│  ├──substance-K receptor *
│  ├──neuromedin-K receptor * ...
│  │  ├──NK3 receptor *
│  │  └──NK3 receptor *
│  ├──NK3 receptor * ...
│  │  ├──NK3 receptor *
│  │  └──NK3 receptor *
│  ├──NK3 receptor * ...
│  │  ├──NK3 receptor *
│  │  └──NK3 receptor *
│  ├──NK1 receptor * ...
│  │  ├──NK1 receptor *
│  │  ├──NK1 receptor *
│  │  └──NK1 receptor *
│  ├──NK2 receptor * ...
│  │  ├──NK2 receptor
│  │  ├──NK2 receptor
│  │  └──NK2 receptor
│  └──substance-P receptor * ...
│     ├──NK1 receptor *
│     ├──NK1 receptor *
│     └──NK1 receptor *
├──vasopressin/oxytocin receptor ...
│  ├──vasopressin V1a receptor *
│  ├──vasopressin V1b receptor *
│  ├──vasopressin V2 receptor *
│  ├──oxytocin receptor * ...
│  │  ├──oxytocin receptor (human)
│  │  └──oxytocin receptor (mouse)
│  ├──OT receptor * ...
│  │  ├──OT receptor
│  │  ├──OT receptor
│  │  └──OT receptor
│  ├──V1A receptor * ...
│  │  ├──V1A receptor
│  │  ├──V1A receptor
│  │  └──V1A receptor
│  ├──V1B receptor * ...
│  │  ├──V1B receptor
│  │  ├──V1B receptor
│  │  └──V1B receptor
│  └──V2 receptor * ...
│     ├──V2 receptor
│     ├──V2 receptor
│     └──V2 receptor
├──Vasopressin/oxytocin receptor ...
│  ├──vasopressin V1a receptor *
│  ├──vasopressin V1b receptor *
│  ├──vasopressin V2 receptor *
│  ├──oxytocin receptor * ...
│  │  ├──oxytocin receptor (human)
│  │  └──oxytocin receptor (mouse)
│  ├──OT receptor * ...
│  │  ├──OT receptor
│  │  ├──OT receptor
│  │  └──OT receptor
│  ├──V1A receptor * ...
│  │  ├──V1A receptor
│  │  ├──V1A receptor
│  │  └──V1A receptor
│  ├──V1B receptor * ...
│  │  ├──V1B receptor
│  │  ├──V1B receptor
│  │  └──V1B receptor
│  └──V2 receptor * ...
│     ├──V2 receptor
│     ├──V2 receptor
│     └──V2 receptor
├──Orphan (trace amine-like) receptor ...
│  ├──Orphan (trace amine-like) receptor - unspecified 1 ...
│  │  ├──Orphan (trace amine-like) receptor - unspecified 1
│  │  ├──Orphan (trace amine-like) receptor - unspecified 1
│  │  └──Orphan (trace amine-like) receptor - unspecified 1
│  ├──Orphan (trace amine-like) receptor - unspecified 2 ...
│  │  ├──Orphan (trace amine-like) receptor - unspecified 2
│  │  ├──Orphan (trace amine-like) receptor - unspecified 2
│  │  └──Orphan (trace amine-like) receptor - unspecified 2
│  ├──Orphan (trace amine-like) receptor - unspecified 3 ...
│  │  ├──Orphan (trace amine-like) receptor - unspecified 3
│  │  ├──Orphan (trace amine-like) receptor - unspecified 3
│  │  └──Orphan (trace amine-like) receptor - unspecified 3
│  ├──TA3 receptor ...
│  │  ├──TA3 receptor
│  │  ├──TA3 receptor
│  │  └──TA3 receptor
│  ├──TA4 receptor ...
│  │  ├──TA4 receptor
│  │  ├──TA4 receptor
│  │  └──TA4 receptor
│  └──TA5 receptor ...
│     ├──TA5 receptor
│     ├──TA5 receptor
│     └──TA5 receptor
├──melanocortin receptor ...
│  ├──adrenocorticotropic hormone receptor *
│  ├──melanocortin receptor 3 *
│  ├──melanocortin receptor 4 *
│  ├──melanocortin receptor 5 *
│  ├──melanocyte-stimulating hormone receptor *
│  ├──MC1 receptor * ...
│  │  ├──MC1 receptor
│  │  ├──MC1 receptor
│  │  └──MC1 receptor
│  ├──MC2 receptor * ...
│  │  ├──MC2 receptor
│  │  ├──MC2 receptor
│  │  └──MC2 receptor
│  ├──MC3 receptor * ...
│  │  ├──MC3 receptor
│  │  ├──MC3 receptor
│  │  └──MC3 receptor
│  ├──MC4 receptor * ...
│  │  ├──MC4 receptor
│  │  ├──MC4 receptor
│  │  └──MC4 receptor
│  └──MC5 receptor * ...
│     ├──MC5 receptor
│     ├──MC5 receptor
│     └──MC5 receptor
├──Melanocortin receptor ...
│  ├──adrenocorticotropic hormone receptor *
│  ├──melanocortin receptor 3 *
│  ├──melanocortin receptor 4 *
│  ├──melanocortin receptor 5 *
│  ├──melanocyte-stimulating hormone receptor *
│  ├──MC1 receptor * ...
│  │  ├──MC1 receptor
│  │  ├──MC1 receptor
│  │  └──MC1 receptor
│  ├──MC2 receptor * ...
│  │  ├──MC2 receptor
│  │  ├──MC2 receptor
│  │  └──MC2 receptor
│  ├──MC3 receptor * ...
│  │  ├──MC3 receptor
│  │  ├──MC3 receptor
│  │  └──MC3 receptor
│  ├──MC4 receptor * ...
│  │  ├──MC4 receptor
│  │  ├──MC4 receptor
│  │  └──MC4 receptor
│  └──MC5 receptor * ...
│     ├──MC5 receptor
│     ├──MC5 receptor
│     └──MC5 receptor
├──somatostatin receptor ...
│  ├──somatostatin receptor 1 *
│  ├──somatostatin receptor 2 *
│  ├──somatostatin receptor 3 *
│  ├──somatostatin receptor 4 *
│  ├──somatostatin receptor 5 *
│  ├──Sst1 receptor * ...
│  │  ├──Sst1 receptor
│  │  ├──Sst1 receptor
│  │  └──Sst1 receptor
│  ├──Sst2 receptor * ...
│  │  ├──Sst2 receptor
│  │  ├──Sst2 receptor
│  │  └──Sst2 receptor
│  ├──Sst3 receptor * ...
│  │  ├──Sst3 receptor
│  │  ├──Sst3 receptor
│  │  └──Sst3 receptor
│  ├──Sst4 receptor * ...
│  │  ├──Sst4 receptor
│  │  ├──Sst4 receptor
│  │  └──Sst4 receptor
│  └──Sst5 receptor * ...
│     ├──Sst5 receptor
│     ├──Sst5 receptor
│     └──Sst5 receptor
├──Somatostatin receptor ...
│  ├──somatostatin receptor 1 *
│  ├──somatostatin receptor 2 *
│  ├──somatostatin receptor 3 *
│  ├──somatostatin receptor 4 *
│  ├──somatostatin receptor 5 *
│  ├──Sst1 receptor * ...
│  │  ├──Sst1 receptor
│  │  ├──Sst1 receptor
│  │  └──Sst1 receptor
│  ├──Sst2 receptor * ...
│  │  ├──Sst2 receptor
│  │  ├──Sst2 receptor
│  │  └──Sst2 receptor
│  ├──Sst3 receptor * ...
│  │  ├──Sst3 receptor
│  │  ├──Sst3 receptor
│  │  └──Sst3 receptor
│  ├──Sst4 receptor * ...
│  │  ├──Sst4 receptor
│  │  ├──Sst4 receptor
│  │  └──Sst4 receptor
│  └──Sst5 receptor * ...
│     ├──Sst5 receptor
│     ├──Sst5 receptor
│     └──Sst5 receptor
├──Orphan (Mas-related) receptor ...
│  ├──Orphan (Mas-related) receptor - unspecified 1 ...
│  │  └──Orphan (Mas-related) receptor - unspecified 1
│  ├──Orphan (Mas-related) receptor - unspecified 2 ...
│  │  └──Orphan (Mas-related) receptor - unspecified 2
│  ├──Orphan (Mas-related) receptor - unspecified 3 ...
│  │  └──Orphan (Mas-related) receptor - unspecified 3
│  ├──Orphan (Mas-related) receptor - unspecified 4 ...
│  │  └──Orphan (Mas-related) receptor - unspecified 4
│  ├──Orphan (Mas-related) receptor - unspecified 5 ...
│  │  └──Orphan (Mas-related) receptor - unspecified 5
│  ├──Orphan (Mas-related) receptor - unspecified 6 ...
│  │  ├──Orphan (Mas-related) receptor - unspecified 6
│  │  └──Orphan (Mas-related) receptor - unspecified 6
│  ├──Orphan (Mas-related) receptor - unspecified 7 ...
│  │  ├──Orphan (Mas-related) receptor - unspecified 7
│  │  └──Orphan (Mas-related) receptor - unspecified 7
│  ├──Orphan (Mas-related) receptor - unspecified 10 ...
│  │  ├──Orphan (Mas-related) receptor - unspecified 10
│  │  └──Orphan (Mas-related) receptor - unspecified 10
│  ├──Orphan (Mas-related) receptor - unspecified 8 ...
│  │  ├──Orphan (Mas-related) receptor - unspecified 8
│  │  ├──Orphan (Mas-related) receptor - unspecified 8
│  │  └──Orphan (Mas-related) receptor - unspecified 8
│  └──Orphan (Mas-related) receptor - unspecified 9 ...
│     ├──Orphan (Mas-related) receptor - unspecified 9
│     ├──Orphan (Mas-related) receptor - unspecified 9
│     └──Orphan (Mas-related) receptor - unspecified 9
├──P2Y receptor ...
│  ├──P2Y11 receptor ...
│  │  └──P2Y11 receptor
│  ├──P2Y1 receptor ...
│  │  ├──P2Y1 receptor
│  │  ├──P2Y1 receptor
│  │  └──P2Y1 receptor
│  ├──P2Y2 receptor ...
│  │  ├──P2Y2 receptor
│  │  ├──P2Y2 receptor
│  │  └──P2Y2 receptor
│  ├──P2Y4 receptor ...
│  │  ├──P2Y4 receptor
│  │  ├──P2Y4 receptor
│  │  └──P2Y4 receptor
│  ├──P2Y6 receptor ...
│  │  ├──P2Y6 receptor
│  │  ├──P2Y6 receptor
│  │  └──P2Y6 receptor
│  ├──P2Y12 receptor ...
│  │  ├──P2Y12 receptor
│  │  ├──P2Y12 receptor
│  │  └──P2Y12 receptor
│  ├──P2Y13 receptor ...
│  │  ├──P2Y13 receptor
│  │  ├──P2Y13 receptor
│  │  └──P2Y13 receptor
│  └──P2Y receptor - unspecified 1 ...
│     ├──P2Y receptor - unspecified 1
│     ├──P2Y receptor - unspecified 1
│     └──P2Y receptor - unspecified 1
├──Lysophospholipid receptor ...
│  ├──LPA2 receptor ...
│  │  ├──LPA2 receptor
│  │  └──LPA2 receptor
│  ├──LPA1 receptor ...
│  │  ├──LPA1 receptor
│  │  ├──LPA1 receptor
│  │  └──LPA1 receptor
│  ├──LPA3 receptor ...
│  │  ├──LPA3 receptor
│  │  ├──LPA3 receptor
│  │  └──LPA3 receptor
│  ├──S1P1 receptor ...
│  │  ├──S1P1 receptor
│  │  ├──S1P1 receptor
│  │  └──S1P1 receptor
│  ├──S1P2 receptor ...
│  │  ├──S1P2 receptor
│  │  ├──S1P2 receptor
│  │  └──S1P2 receptor
│  ├──S1P3 receptor ...
│  │  ├──S1P3 receptor
│  │  ├──S1P3 receptor
│  │  └──S1P3 receptor
│  ├──S1P4 receptor ...
│  │  ├──S1P4 receptor
│  │  ├──S1P4 receptor
│  │  └──S1P4 receptor
│  └──S1P5 receptor ...
│     ├──S1P5 receptor
│     ├──S1P5 receptor
│     └──S1P5 receptor
├──Adrenoceptor receptor ...
│  ├──Alpha1A receptor ...
│  │  ├──Alpha1A receptor
│  │  ├──Alpha1A receptor
│  │  └──Alpha1A receptor
│  ├──Alpha1B receptor ...
│  │  ├──Alpha1B receptor
│  │  ├──Alpha1B receptor
│  │  └──Alpha1B receptor
│  ├──Alpha1D receptor ...
│  │  ├──Alpha1D receptor
│  │  ├──Alpha1D receptor
│  │  └──Alpha1D receptor
│  ├──Alpha2A receptor ...
│  │  ├──Alpha2A receptor
│  │  ├──Alpha2A receptor
│  │  └──Alpha2A receptor
│  ├──Alpha2B receptor ...
│  │  ├──Alpha2B receptor
│  │  ├──Alpha2B receptor
│  │  └──Alpha2B receptor
│  ├──Alpha2C receptor ...
│  │  ├──Alpha2C receptor
│  │  ├──Alpha2C receptor
│  │  └──Alpha2C receptor
│  ├──Beta1 receptor ...
│  │  ├──Beta1 receptor
│  │  ├──Beta1 receptor
│  │  └──Beta1 receptor
│  ├──Beta2 receptor ...
│  │  ├──Beta2 receptor
│  │  ├──Beta2 receptor
│  │  └──Beta2 receptor
│  └──Beta3 receptor ...
│     ├──Beta3 receptor
│     ├──Beta3 receptor
│     └──Beta3 receptor
├──Serotonin G-protein coupled receptor ...
│  ├──5-HT1E receptor ...
│  │  └──5-HT1E receptor
│  ├──5-HT1A receptor ...
│  │  ├──5-HT1A receptor
│  │  ├──5-HT1A receptor
│  │  └──5-HT1A receptor
│  ├──5-HT1B receptor ...
│  │  ├──5-HT1B receptor
│  │  ├──5-HT1B receptor
│  │  └──5-HT1B receptor
│  ├──5-HT1D receptor ...
│  │  ├──5-HT1D receptor
│  │  ├──5-HT1D receptor
│  │  └──5-HT1D receptor
│  ├──5-HT1F receptor ...
│  │  ├──5-HT1F receptor
│  │  ├──5-HT1F receptor
│  │  └──5-HT1F receptor
│  ├──5-HT2A receptor ...
│  │  ├──5-HT2A receptor
│  │  ├──5-HT2A receptor
│  │  └──5-HT2A receptor
│  ├──5-HT2B receptor ...
│  │  ├──5-HT2B receptor
│  │  ├──5-HT2B receptor
│  │  └──5-HT2B receptor
│  ├──5-HT2C receptor ...
│  │  ├──5-HT2C receptor
│  │  ├──5-HT2C receptor
│  │  └──5-HT2C receptor
│  ├──5-HT4 receptor ...
│  │  ├──5-HT4 receptor
│  │  ├──5-HT4 receptor
│  │  └──5-HT4 receptor
│  ├──5-HT5A receptor ...
│  │  ├──5-HT5A receptor
│  │  ├──5-HT5A receptor
│  │  └──5-HT5A receptor
│  ├──5-HT6 receptor ...
│  │  ├──5-HT6 receptor
│  │  ├──5-HT6 receptor
│  │  └──5-HT6 receptor
│  └──5-HT7 receptor ...
│     ├──5-HT7 receptor
│     ├──5-HT7 receptor
│     └──5-HT7 receptor
├──Prostanoid receptor ...
│  ├──prostacyclin receptor *
│  ├──prostaglandin D2 receptor *
│  ├──prostaglandin E2 receptor EP1 subtype *
│  ├──prostaglandin E2 receptor EP2 subtype *
│  ├──prostaglandin E2 receptor EP3 subtype *
│  ├──prostaglandin F2-alpha receptor *
│  ├──prostaglandin D2 receptor DP2 * ...
│  │  ├──prostaglandin D2 receptor 2 (human)
│  │  └──prostaglandin D2 receptor 2 (mouse)
│  ├──DP receptor * ...
│  │  ├──DP receptor
│  │  ├──DP receptor
│  │  └──DP receptor
│  ├──EP1 receptor * ...
│  │  ├──EP1 receptor
│  │  ├──EP1 receptor
│  │  └──EP1 receptor
│  ├──EP2 receptor * ...
│  │  ├──EP2 receptor
│  │  ├──EP2 receptor
│  │  └──EP2 receptor
│  ├──EP3 receptor * ...
│  │  ├──EP3 receptor
│  │  ├──EP3 receptor
│  │  └──EP3 receptor
│  ├──EP4 receptor * ...
│  │  ├──EP4 receptor
│  │  ├──EP4 receptor
│  │  └──EP4 receptor
│  ├──FP receptor * ...
│  │  ├──FP receptor
│  │  ├──FP receptor
│  │  └──FP receptor
│  ├──IP1 receptor * ...
│  │  ├──IP1 receptor
│  │  ├──IP1 receptor
│  │  └──IP1 receptor
│  ├──Prostanoid receptor - unspecified 1 * ...
│  │  ├──Prostanoid receptor - unspecified 1
│  │  ├──Prostanoid receptor - unspecified 1
│  │  └──Prostanoid receptor - unspecified 1
│  ├──thromboxane A2 receptor * ...
│  │  ├──TP receptor *
│  │  ├──TP receptor *
│  │  └──TP receptor *
│  └──TP receptor * ...
│     ├──TP receptor *
│     ├──TP receptor *
│     └──TP receptor *
├──prostanoid receptor ...
│  ├──prostacyclin receptor *
│  ├──prostaglandin D2 receptor *
│  ├──prostaglandin E2 receptor EP1 subtype *
│  ├──prostaglandin E2 receptor EP2 subtype *
│  ├──prostaglandin E2 receptor EP3 subtype *
│  ├──prostaglandin F2-alpha receptor *
│  ├──prostaglandin D2 receptor DP2 * ...
│  │  ├──prostaglandin D2 receptor 2 (human)
│  │  └──prostaglandin D2 receptor 2 (mouse)
│  ├──DP receptor * ...
│  │  ├──DP receptor
│  │  ├──DP receptor
│  │  └──DP receptor
│  ├──EP1 receptor * ...
│  │  ├──EP1 receptor
│  │  ├──EP1 receptor
│  │  └──EP1 receptor
│  ├──EP2 receptor * ...
│  │  ├──EP2 receptor
│  │  ├──EP2 receptor
│  │  └──EP2 receptor
│  ├──EP3 receptor * ...
│  │  ├──EP3 receptor
│  │  ├──EP3 receptor
│  │  └──EP3 receptor
│  ├──EP4 receptor * ...
│  │  ├──EP4 receptor
│  │  ├──EP4 receptor
│  │  └──EP4 receptor
│  ├──FP receptor * ...
│  │  ├──FP receptor
│  │  ├──FP receptor
│  │  └──FP receptor
│  ├──IP1 receptor * ...
│  │  ├──IP1 receptor
│  │  ├──IP1 receptor
│  │  └──IP1 receptor
│  ├──Prostanoid receptor - unspecified 1 * ...
│  │  ├──Prostanoid receptor - unspecified 1
│  │  ├──Prostanoid receptor - unspecified 1
│  │  └──Prostanoid receptor - unspecified 1
│  ├──thromboxane A2 receptor * ...
│  │  ├──TP receptor *
│  │  ├──TP receptor *
│  │  └──TP receptor *
│  └──TP receptor * ...
│     ├──TP receptor *
│     ├──TP receptor *
│     └──TP receptor *
├──chemokine receptor ...
│  ├──C-C chemokine receptor type 8 *
│  ├──C-C chemokine receptor type 9 *
│  ├──C-C chemokine receptor type 10 *
│  ├──chemokine receptor CXCR7 *
│  ├──chemokine receptor-like protein CCRL1 *
│  ├──chemokine receptor-like protein CCRL2 *
│  ├──chemokine XC receptor 1 *
│  ├──chemokine-binding protein 2 *
│  ├──C-X-C chemokine receptor type 6 * ...
│  │  └──C-X-C chemokine receptor type 6 (human)
│  ├──C-C chemokine receptor type 2 * ...
│  │  ├──C-C chemokine receptor type 2 (human)
│  │  └──C-C chemokine receptor type 2 (mouse)
│  ├──C-C chemokine receptor type 4 * ...
│  │  ├──C-C chemokine receptor type 4 (human)
│  │  └──C-C chemokine receptor type 4 (mouse)
│  ├──C-C chemokine receptor type 5 * ...
│  │  ├──C-C chemokine receptor type 5 (human)
│  │  └──C-C chemokine receptor type 5 (mouse)
│  ├──C-C chemokine receptor type 6 * ...
│  │  ├──C-C chemokine receptor type 6 (human)
│  │  └──C-C chemokine receptor type 6 (mouse)
│  ├──C-C chemokine receptor type 7 * ...
│  │  ├──C-C chemokine receptor type 7 (human)
│  │  └──C-C chemokine receptor type 7 (mouse)
│  ├──C-X-C chemokine receptor type 3 * ...
│  │  ├──C-X-C chemokine receptor type 3 (human)
│  │  └──C-X-C chemokine receptor type 3 (mouse)
│  ├──C-X-C chemokine receptor type 4 * ...
│  │  ├──C-X-C chemokine receptor type 4 (human)
│  │  └──C-X-C chemokine receptor type 4 (mouse)
│  ├──C-X-C chemokine receptor type 5 * ...
│  │  ├──C-X-C chemokine receptor type 5 (human)
│  │  └──C-X-C chemokine receptor type 5 (mouse)
│  ├──Chemokine receptor - unspecified 1 * ...
│  │  ├──Chemokine receptor - unspecified 1
│  │  └──Chemokine receptor - unspecified 1
│  ├──Chemokine receptor - unspecified 3 * ...
│  │  ├──Chemokine receptor - unspecified 3
│  │  └──Chemokine receptor - unspecified 3
│  ├──CX3C chemokine receptor 1 * ...
│  │  ├──CX3C chemokine receptor 1 (human)
│  │  └──CX3C chemokine receptor 1 (mouse)
│  ├──CCR1 receptor * ...
│  │  ├──CCR1 receptor
│  │  ├──CCR1 receptor
│  │  └──CCR1 receptor
│  ├──CCR2 receptor * ...
│  │  ├──CCR2 receptor
│  │  ├──CCR2 receptor
│  │  └──CCR2 receptor
│  ├──CCR3 receptor * ...
│  │  ├──CCR3 receptor
│  │  ├──CCR3 receptor
│  │  └──CCR3 receptor
│  ├──CCR4 receptor * ...
│  │  ├──CCR4 receptor
│  │  ├──CCR4 receptor
│  │  └──CCR4 receptor
│  ├──CCR5 receptor * ...
│  │  ├──CCR5 receptor
│  │  ├──CCR5 receptor
│  │  └──CCR5 receptor
│  ├──CCR6 receptor * ...
│  │  ├──CCR6 receptor
│  │  ├──CCR6 receptor
│  │  └──CCR6 receptor
│  ├──CCR7 receptor * ...
│  │  ├──CCR7 receptor
│  │  ├──CCR7 receptor
│  │  └──CCR7 receptor
│  ├──CCR8 receptor * ...
│  │  ├──CCR8 receptor
│  │  ├──CCR8 receptor
│  │  └──CCR8 receptor
│  ├──CCR9 receptor * ...
│  │  ├──CCR9 receptor
│  │  ├──CCR9 receptor
│  │  └──CCR9 receptor
│  ├──CCR10 receptor * ...
│  │  ├──CCR10 receptor
│  │  ├──CCR10 receptor
│  │  └──CCR10 receptor
│  ├──Chemokine receptor - unspecified 2 * ...
│  │  ├──Chemokine receptor - unspecified 2
│  │  ├──Chemokine receptor - unspecified 2
│  │  └──Chemokine receptor - unspecified 2
│  ├──Chemokine receptor - unspecified 4 * ...
│  │  ├──Chemokine receptor - unspecified 4
│  │  ├──Chemokine receptor - unspecified 4
│  │  └──Chemokine receptor - unspecified 4
│  ├──CX3CR1 receptor * ...
│  │  ├──CX3CR1 receptor
│  │  ├──CX3CR1 receptor
│  │  └──CX3CR1 receptor
│  ├──CXCR1 receptor * ...
│  │  ├──CXCR1 receptor
│  │  ├──CXCR1 receptor
│  │  └──CXCR1 receptor
│  ├──CXCR2 receptor * ...
│  │  ├──CXCR2 receptor
│  │  ├──CXCR2 receptor
│  │  └──CXCR2 receptor
│  ├──CXCR3 receptor * ...
│  │  ├──CXCR3 receptor
│  │  ├──CXCR3 receptor
│  │  └──CXCR3 receptor
│  ├──CXCR4 receptor * ...
│  │  ├──CXCR4 receptor
│  │  ├──CXCR4 receptor
│  │  └──CXCR4 receptor
│  ├──CXCR5 receptor * ...
│  │  ├──CXCR5 receptor
│  │  ├──CXCR5 receptor
│  │  └──CXCR5 receptor
│  ├──XCR1 receptor * ...
│  │  ├──XCR1 receptor
│  │  ├──XCR1 receptor
│  │  └──XCR1 receptor
│  ├──high affinity interleukin-8 receptor * ...
│  │  ├──high affinity interleukin-8 receptor A ...
│  │  │  └──C-X-C chemokine receptor type 1 (human)
│  │  └──high affinity interleukin-8 receptor B ...
│  │     ├──C-X-C chemokine receptor type 2 (human)
│  │     └──C-X-C chemokine receptor type 2 (mouse)
│  └──chemokine receptor CCR1/3/1L * ...
│     ├──C-C chemokine receptor 1-like protein 1
│     ├──C-C chemokine receptor type 1 ...
│     │  ├──C-C chemokine receptor type 1 (human)
│     │  └──C-C chemokine receptor type 1 (mouse)
│     └──C-C chemokine receptor type 3 ...
│        ├──C-C chemokine receptor type 3 (human)
│        └──probable C-C chemokine receptor type 3 (mouse)
├──Chemokine receptor ...
│  ├──C-C chemokine receptor type 8 *
│  ├──C-C chemokine receptor type 9 *
│  ├──C-C chemokine receptor type 10 *
│  ├──chemokine receptor CXCR7 *
│  ├──chemokine receptor-like protein CCRL1 *
│  ├──chemokine receptor-like protein CCRL2 *
│  ├──chemokine XC receptor 1 *
│  ├──chemokine-binding protein 2 *
│  ├──C-X-C chemokine receptor type 6 * ...
│  │  └──C-X-C chemokine receptor type 6 (human)
│  ├──C-C chemokine receptor type 2 * ...
│  │  ├──C-C chemokine receptor type 2 (human)
│  │  └──C-C chemokine receptor type 2 (mouse)
│  ├──C-C chemokine receptor type 4 * ...
│  │  ├──C-C chemokine receptor type 4 (human)
│  │  └──C-C chemokine receptor type 4 (mouse)
│  ├──C-C chemokine receptor type 5 * ...
│  │  ├──C-C chemokine receptor type 5 (human)
│  │  └──C-C chemokine receptor type 5 (mouse)
│  ├──C-C chemokine receptor type 6 * ...
│  │  ├──C-C chemokine receptor type 6 (human)
│  │  └──C-C chemokine receptor type 6 (mouse)
│  ├──C-C chemokine receptor type 7 * ...
│  │  ├──C-C chemokine receptor type 7 (human)
│  │  └──C-C chemokine receptor type 7 (mouse)
│  ├──C-X-C chemokine receptor type 3 * ...
│  │  ├──C-X-C chemokine receptor type 3 (human)
│  │  └──C-X-C chemokine receptor type 3 (mouse)
│  ├──C-X-C chemokine receptor type 4 * ...
│  │  ├──C-X-C chemokine receptor type 4 (human)
│  │  └──C-X-C chemokine receptor type 4 (mouse)
│  ├──C-X-C chemokine receptor type 5 * ...
│  │  ├──C-X-C chemokine receptor type 5 (human)
│  │  └──C-X-C chemokine receptor type 5 (mouse)
│  ├──Chemokine receptor - unspecified 1 * ...
│  │  ├──Chemokine receptor - unspecified 1
│  │  └──Chemokine receptor - unspecified 1
│  ├──Chemokine receptor - unspecified 3 * ...
│  │  ├──Chemokine receptor - unspecified 3
│  │  └──Chemokine receptor - unspecified 3
│  ├──CX3C chemokine receptor 1 * ...
│  │  ├──CX3C chemokine receptor 1 (human)
│  │  └──CX3C chemokine receptor 1 (mouse)
│  ├──CCR1 receptor * ...
│  │  ├──CCR1 receptor
│  │  ├──CCR1 receptor
│  │  └──CCR1 receptor
│  ├──CCR2 receptor * ...
│  │  ├──CCR2 receptor
│  │  ├──CCR2 receptor
│  │  └──CCR2 receptor
│  ├──CCR3 receptor * ...
│  │  ├──CCR3 receptor
│  │  ├──CCR3 receptor
│  │  └──CCR3 receptor
│  ├──CCR4 receptor * ...
│  │  ├──CCR4 receptor
│  │  ├──CCR4 receptor
│  │  └──CCR4 receptor
│  ├──CCR5 receptor * ...
│  │  ├──CCR5 receptor
│  │  ├──CCR5 receptor
│  │  └──CCR5 receptor
│  ├──CCR6 receptor * ...
│  │  ├──CCR6 receptor
│  │  ├──CCR6 receptor
│  │  └──CCR6 receptor
│  ├──CCR7 receptor * ...
│  │  ├──CCR7 receptor
│  │  ├──CCR7 receptor
│  │  └──CCR7 receptor
│  ├──CCR8 receptor * ...
│  │  ├──CCR8 receptor
│  │  ├──CCR8 receptor
│  │  └──CCR8 receptor
│  ├──CCR9 receptor * ...
│  │  ├──CCR9 receptor
│  │  ├──CCR9 receptor
│  │  └──CCR9 receptor
│  ├──CCR10 receptor * ...
│  │  ├──CCR10 receptor
│  │  ├──CCR10 receptor
│  │  └──CCR10 receptor
│  ├──Chemokine receptor - unspecified 2 * ...
│  │  ├──Chemokine receptor - unspecified 2
│  │  ├──Chemokine receptor - unspecified 2
│  │  └──Chemokine receptor - unspecified 2
│  ├──Chemokine receptor - unspecified 4 * ...
│  │  ├──Chemokine receptor - unspecified 4
│  │  ├──Chemokine receptor - unspecified 4
│  │  └──Chemokine receptor - unspecified 4
│  ├──CX3CR1 receptor * ...
│  │  ├──CX3CR1 receptor
│  │  ├──CX3CR1 receptor
│  │  └──CX3CR1 receptor
│  ├──CXCR1 receptor * ...
│  │  ├──CXCR1 receptor
│  │  ├──CXCR1 receptor
│  │  └──CXCR1 receptor
│  ├──CXCR2 receptor * ...
│  │  ├──CXCR2 receptor
│  │  ├──CXCR2 receptor
│  │  └──CXCR2 receptor
│  ├──CXCR3 receptor * ...
│  │  ├──CXCR3 receptor
│  │  ├──CXCR3 receptor
│  │  └──CXCR3 receptor
│  ├──CXCR4 receptor * ...
│  │  ├──CXCR4 receptor
│  │  ├──CXCR4 receptor
│  │  └──CXCR4 receptor
│  ├──CXCR5 receptor * ...
│  │  ├──CXCR5 receptor
│  │  ├──CXCR5 receptor
│  │  └──CXCR5 receptor
│  ├──XCR1 receptor * ...
│  │  ├──XCR1 receptor
│  │  ├──XCR1 receptor
│  │  └──XCR1 receptor
│  ├──high affinity interleukin-8 receptor * ...
│  │  ├──high affinity interleukin-8 receptor A ...
│  │  │  └──C-X-C chemokine receptor type 1 (human)
│  │  └──high affinity interleukin-8 receptor B ...
│  │     ├──C-X-C chemokine receptor type 2 (human)
│  │     └──C-X-C chemokine receptor type 2 (mouse)
│  └──chemokine receptor CCR1/3/1L * ...
│     ├──C-C chemokine receptor 1-like protein 1
│     ├──C-C chemokine receptor type 1 ...
│     │  ├──C-C chemokine receptor type 1 (human)
│     │  └──C-C chemokine receptor type 1 (mouse)
│     └──C-C chemokine receptor type 3 ...
│        ├──C-C chemokine receptor type 3 (human)
│        └──probable C-C chemokine receptor type 3 (mouse)
└──Other Orphan Gene receptor ...
   ├──Other Orphan Gene receptor - unspecified 1 ...
   │  └──Other Orphan Gene receptor - unspecified 1
   ├──Other Orphan Gene receptor - unspecified 2 ...
   │  └──Other Orphan Gene receptor - unspecified 2
   ├──Other Orphan Gene receptor - unspecified 3 ...
   │  └──Other Orphan Gene receptor - unspecified 3
   ├──Other Orphan Gene receptor - unspecified 5 ...
   │  └──Other Orphan Gene receptor - unspecified 5
   ├──Other Orphan Gene receptor - unspecified 6 ...
   │  └──Other Orphan Gene receptor - unspecified 6
   ├──Other Orphan Gene receptor - unspecified 7 ...
   │  └──Other Orphan Gene receptor - unspecified 7
   ├──Other Orphan Gene receptor - unspecified 8 ...
   │  └──Other Orphan Gene receptor - unspecified 8
   ├──Other Orphan Gene receptor - unspecified 4 ...
   │  ├──Other Orphan Gene receptor - unspecified 4
   │  └──Other Orphan Gene receptor - unspecified 4
   ├──Other Orphan Gene receptor - unspecified 9 ...
   │  ├──Other Orphan Gene receptor - unspecified 9
   │  └──Other Orphan Gene receptor - unspecified 9
   ├──Other Orphan Gene receptor - unspecified 10 ...
   │  ├──Other Orphan Gene receptor - unspecified 10
   │  └──Other Orphan Gene receptor - unspecified 10
   ├──Other Orphan Gene receptor - unspecified 11 ...
   │  ├──Other Orphan Gene receptor - unspecified 11
   │  └──Other Orphan Gene receptor - unspecified 11
   ├──Other Orphan Gene receptor - unspecified 12 ...
   │  ├──Other Orphan Gene receptor - unspecified 12
   │  └──Other Orphan Gene receptor - unspecified 12
   ├──Other Orphan Gene receptor - unspecified 13 ...
   │  ├──Other Orphan Gene receptor - unspecified 13
   │  └──Other Orphan Gene receptor - unspecified 13
   ├──Other Orphan Gene receptor - unspecified 14 ...
   │  ├──Other Orphan Gene receptor - unspecified 14
   │  └──Other Orphan Gene receptor - unspecified 14
   ├──Other Orphan Gene receptor - unspecified 15 ...
   │  ├──Other Orphan Gene receptor - unspecified 15
   │  └──Other Orphan Gene receptor - unspecified 15
   ├──Other Orphan Gene receptor - unspecified 16 ...
   │  ├──Other Orphan Gene receptor - unspecified 16
   │  └──Other Orphan Gene receptor - unspecified 16
   ├──Other Orphan Gene receptor - unspecified 17 ...
   │  ├──Other Orphan Gene receptor - unspecified 17
   │  └──Other Orphan Gene receptor - unspecified 17
   ├──Other Orphan Gene receptor - unspecified 18 ...
   │  ├──Other Orphan Gene receptor - unspecified 18
   │  └──Other Orphan Gene receptor - unspecified 18
   ├──Other Orphan Gene receptor - unspecified 19 ...
   │  ├──Other Orphan Gene receptor - unspecified 19
   │  └──Other Orphan Gene receptor - unspecified 19
   ├──Other Orphan Gene receptor - unspecified 27 ...
   │  ├──Other Orphan Gene receptor - unspecified 27
   │  └──Other Orphan Gene receptor - unspecified 27
   ├──Other Orphan Gene receptor - unspecified 36 ...
   │  ├──Other Orphan Gene receptor - unspecified 36
   │  └──Other Orphan Gene receptor - unspecified 36
   ├──Other Orphan Gene receptor - unspecified 38 ...
   │  ├──Other Orphan Gene receptor - unspecified 38
   │  └──Other Orphan Gene receptor - unspecified 38
   ├──Other Orphan Gene receptor - unspecified 42 ...
   │  ├──Other Orphan Gene receptor - unspecified 42
   │  └──Other Orphan Gene receptor - unspecified 42
   ├──Other Orphan Gene receptor - unspecified 20 ...
   │  ├──Other Orphan Gene receptor - unspecified 20
   │  ├──Other Orphan Gene receptor - unspecified 20
   │  └──Other Orphan Gene receptor - unspecified 20
   ├──Other Orphan Gene receptor - unspecified 21 ...
   │  ├──Other Orphan Gene receptor - unspecified 21
   │  ├──Other Orphan Gene receptor - unspecified 21
   │  └──Other Orphan Gene receptor - unspecified 21
   ├──Other Orphan Gene receptor - unspecified 22 ...
   │  ├──Other Orphan Gene receptor - unspecified 22
   │  ├──Other Orphan Gene receptor - unspecified 22
   │  └──Other Orphan Gene receptor - unspecified 22
   ├──Other Orphan Gene receptor - unspecified 23 ...
   │  ├──Other Orphan Gene receptor - unspecified 23
   │  ├──Other Orphan Gene receptor - unspecified 23
   │  └──Other Orphan Gene receptor - unspecified 23
   ├──Other Orphan Gene receptor - unspecified 24 ...
   │  ├──Other Orphan Gene receptor - unspecified 24
   │  ├──Other Orphan Gene receptor - unspecified 24
   │  └──Other Orphan Gene receptor - unspecified 24
   ├──Other Orphan Gene receptor - unspecified 25 ...
   │  ├──Other Orphan Gene receptor - unspecified 25
   │  ├──Other Orphan Gene receptor - unspecified 25
   │  └──Other Orphan Gene receptor - unspecified 25
   ├──Other Orphan Gene receptor - unspecified 26 ...
   │  ├──Other Orphan Gene receptor - unspecified 26
   │  ├──Other Orphan Gene receptor - unspecified 26
   │  └──Other Orphan Gene receptor - unspecified 26
   ├──Other Orphan Gene receptor - unspecified 28 ...
   │  ├──Other Orphan Gene receptor - unspecified 28
   │  ├──Other Orphan Gene receptor - unspecified 28
   │  └──Other Orphan Gene receptor - unspecified 28
   ├──Other Orphan Gene receptor - unspecified 29 ...
   │  ├──Other Orphan Gene receptor - unspecified 29
   │  ├──Other Orphan Gene receptor - unspecified 29
   │  └──Other Orphan Gene receptor - unspecified 29
   ├──Other Orphan Gene receptor - unspecified 30 ...
   │  ├──Other Orphan Gene receptor - unspecified 30
   │  ├──Other Orphan Gene receptor - unspecified 30
   │  └──Other Orphan Gene receptor - unspecified 30
   ├──Other Orphan Gene receptor - unspecified 31 ...
   │  ├──Other Orphan Gene receptor - unspecified 31
   │  ├──Other Orphan Gene receptor - unspecified 31
   │  └──Other Orphan Gene receptor - unspecified 31
   ├──Other Orphan Gene receptor - unspecified 32 ...
   │  ├──Other Orphan Gene receptor - unspecified 32
   │  ├──Other Orphan Gene receptor - unspecified 32
   │  └──Other Orphan Gene receptor - unspecified 32
   ├──Other Orphan Gene receptor - unspecified 33 ...
   │  ├──Other Orphan Gene receptor - unspecified 33
   │  ├──Other Orphan Gene receptor - unspecified 33
   │  └──Other Orphan Gene receptor - unspecified 33
   ├──Other Orphan Gene receptor - unspecified 34 ...
   │  ├──Other Orphan Gene receptor - unspecified 34
   │  ├──Other Orphan Gene receptor - unspecified 34
   │  └──Other Orphan Gene receptor - unspecified 34
   ├──Other Orphan Gene receptor - unspecified 35 ...
   │  ├──Other Orphan Gene receptor - unspecified 35
   │  ├──Other Orphan Gene receptor - unspecified 35
   │  └──Other Orphan Gene receptor - unspecified 35
   ├──Other Orphan Gene receptor - unspecified 37 ...
   │  ├──Other Orphan Gene receptor - unspecified 37
   │  ├──Other Orphan Gene receptor - unspecified 37
   │  └──Other Orphan Gene receptor - unspecified 37
   ├──Other Orphan Gene receptor - unspecified 39 ...
   │  ├──Other Orphan Gene receptor - unspecified 39
   │  ├──Other Orphan Gene receptor - unspecified 39
   │  └──Other Orphan Gene receptor - unspecified 39
   ├──Other Orphan Gene receptor - unspecified 40 ...
   │  ├──Other Orphan Gene receptor - unspecified 40
   │  ├──Other Orphan Gene receptor - unspecified 40
   │  └──Other Orphan Gene receptor - unspecified 40
   ├──Other Orphan Gene receptor - unspecified 41 ...
   │  ├──Other Orphan Gene receptor - unspecified 41
   │  ├──Other Orphan Gene receptor - unspecified 41
   │  └──Other Orphan Gene receptor - unspecified 41
   └──Other Orphan Gene receptor - unspecified 43 ...
      ├──Other Orphan Gene receptor - unspecified 43
      ├──Other Orphan Gene receptor - unspecified 43
      └──Other Orphan Gene receptor - unspecified 43