G-protein coupled receptor

├──Motilin receptor ...

│  └──Motilin receptor

├──Ghrelin receptor ...

│  ├──Ghrelin receptor
│  ├──Ghrelin receptor
│  └──Ghrelin 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

├──G protein-coupled bile acid receptor ...

│  └──GPBA receptor ...

│     ├──GPBA receptor
│     ├──GPBA receptor
│     └──GPBA receptor

├──KiSS1-derived peptide receptor ...

│  └──KiSS1 receptor ...

│     ├──KiSS1 receptor
│     ├──KiSS1 receptor
│     └──KiSS1 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

├──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

├──Melanin-concentrating hormone receptor ...

│  ├──MCH2 receptor ...

│  │  └──MCH2 receptor

│  └──MCH1 receptor ...

│     ├──MCH1 receptor
│     ├──MCH1 receptor
│     └──MCH1 receptor

├──N-formylpeptide receptor ...

│  ├──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

├──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

├──Bradykinin receptor ...

│  ├──B1 receptor ...

│  │  ├──B1 receptor
│  │  ├──B1 receptor
│  │  └──B1 receptor

│  └──B2 receptor ...

│     ├──B2 receptor
│     ├──B2 receptor
│     └──B2 receptor

├──Cannabinoid receptor ...

│  ├──CB1 receptor ...

│  │  ├──CB1 receptor
│  │  ├──CB1 receptor
│  │  └──CB1 receptor

│  └──CB2 receptor ...

│     ├──CB2 receptor
│     ├──CB2 receptor
│     └──CB2 receptor

├──Cholecystokinin receptor ...

│  ├──CCK1 receptor ...

│  │  ├──CCK1 receptor
│  │  ├──CCK1 receptor
│  │  └──CCK1 receptor

│  └──CCK2 receptor ...

│     ├──CCK2 receptor
│     ├──CCK2 receptor
│     └──CCK2 receptor

├──Endothelin receptor ...

│  ├──ETA receptor ...

│  │  ├──ETA receptor
│  │  ├──ETA receptor
│  │  └──ETA receptor

│  └──ETB receptor ...

│     ├──ETB receptor
│     ├──ETB receptor
│     └──ETB receptor

├──Melatonin receptor ...

│  ├──MT1 receptor ...

│  │  ├──MT1 receptor
│  │  ├──MT1 receptor
│  │  └──MT1 receptor

│  └──MT2 receptor ...

│     ├──MT2 receptor
│     ├──MT2 receptor
│     └──MT2 receptor

├──Neuromedin U receptor ...

│  ├──NMU1 receptor ...

│  │  ├──NMU1 receptor
│  │  ├──NMU1 receptor
│  │  └──NMU1 receptor

│  └──NMU2 receptor ...

│     ├──NMU2 receptor
│     ├──NMU2 receptor
│     └──NMU2 receptor

├──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

├──Prokineticin receptor ...

│  ├──PKR1 receptor ...

│  │  ├──PKR1 receptor
│  │  ├──PKR1 receptor
│  │  └──PKR1 receptor

│  └──PKR2 receptor ...

│     ├──PKR2 receptor
│     ├──PKR2 receptor
│     └──PKR2 receptor

├──Nicotinic acid receptor ...

│  ├──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

├──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

├──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

├──Bombesin 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 ...

│  ├──GAL1 receptor ...

│  │  ├──GAL1 receptor
│  │  ├──GAL1 receptor
│  │  └──GAL1 receptor

│  ├──GAL2 receptor ...

│  │  ├──GAL2 receptor
│  │  ├──GAL2 receptor
│  │  └──GAL2 receptor

│  └──GAL3 receptor ...

│     ├──GAL3 receptor
│     ├──GAL3 receptor
│     └──GAL3 receptor

├──Glycoprotein hormone receptor ...

│  ├──FSH receptor ...

│  │  ├──FSH receptor
│  │  ├──FSH receptor
│  │  └──FSH receptor

│  ├──LH receptor ...

│  │  ├──LH receptor
│  │  ├──LH receptor
│  │  └──LH receptor

│  └──TSH receptor ...

│     ├──TSH receptor
│     ├──TSH receptor
│     └──TSH receptor

├──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

├──Tachykinin receptor ...

│  ├──NK1 receptor ...

│  │  ├──NK1 receptor
│  │  ├──NK1 receptor
│  │  └──NK1 receptor

│  ├──NK2 receptor ...

│  │  ├──NK2 receptor
│  │  ├──NK2 receptor
│  │  └──NK2 receptor

│  └──NK3 receptor ...

│     ├──NK3 receptor
│     ├──NK3 receptor
│     └──NK3 receptor

├──Free fatty acid receptor ...

│  ├──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

├──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

├──Adenosine receptor ...

│  ├──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

├──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

├──Neuropeptide Y 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 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

├──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

├──Vasopressin/oxytocin receptor ...

│  ├──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

├──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

├──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

├──Melanocortin 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 ...

│  ├──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

├──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

├──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

├──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

├──Prostanoid receptor ...

│  ├──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

│  └──TP receptor ...

│     ├──TP receptor
│     ├──TP receptor
│     └──TP 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

├──Chemokine receptor ...

│  ├──Chemokine receptor - unspecified 1 ...

│  │  ├──Chemokine receptor - unspecified 1
│  │  └──Chemokine receptor - unspecified 1

│  ├──Chemokine receptor - unspecified 3 ...

│  │  ├──Chemokine receptor - unspecified 3
│  │  └──Chemokine receptor - unspecified 3

│  ├──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

└──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