Protein
├──Acetylcholinesterase
├──Alpha Actinin
├──Amyloid Precursor Protein
├──Amyloid Protein
├──Aquaporin 4
├──Cadherin
├──Calbindin 28K
├──Calnexin
├──Catechol O-methyltransferase
├──Clathrin
├──Contactin
├──Cytochrome c
├──DOPA decarboxylase
├──Dopamine beta-hydroxylase
├──Dopamine Transporter Type 1
├──Dopamine transporter
├──Doublecortin
├──Dynamin
├──FOS protein
├──Fragile X mental retardation protein
├──Gamma secretase
├──Glial cell derived neurotrophic factor
├──Horse radish peroxidase
├──Huntingtin
├──insulin (human)
├──Integrin
├──KIF3A
├──L1
├──Leptin
├──Lysosome associated membrane protein
├──MAO
├──MAP2
├──MAP5
├──MAP kinase
├──Myelin Basic Protein
├──NeurabinI
├──Neurofascin
├──Olig2
├──p25
├──Parkin
├──Phenylethanolamine N-Methyltransferase
├──Platelet Derived Growth Factor
├──Prion protein
├──Proteasome
├──Protocadherin
├──PSD95
├──Rho GTPase
├──RIM1
├──SAP90
├──SAP97
├──Sidekick
├──Spinophliln
├──Synapsin
├──Synaptophysin
├──Synoretin
├──Synphilin-1
├──Tau
├──Tissue Plasminogen Activator
├──Transferrin
├──Tumor Necrosis Factor Alpha
├──Ubiquitin
├──Vesicular acetylcholine transporter
├──Vesicular glutamate transporter 1
├──Vesicular glutamate transporter 2

├──Interleukin ...

│  └──Interleukin-1

├──MAP1 ...

│  └──MAP1B

├──Neurexin ...

│  └──Beta Neurexin

├──Syndecan ...

│  └──Syndecan-2

├──Adenine Nucleotide Transporter ...

│  ├──ANT-1
│  └──ANT-2

├──Apolipoprotein ...

│  ├──Apolipoprotein E
│  └──Apolipoprotein J

├──Beta secretase ...

│  ├──Beta secretase 1
│  └──Beta secretase 2

├──Beta-Amyloid ...

│  ├──Beta-Amyloid 40
│  └──Beta-Amyloid 42

├──Cav alpha2 ...

│  ├──Cav alpha2.1
│  └──Cav alpha2.2

├──Cav delta ...

│  ├──Cav delta1
│  └──Cav delta2

├──Connexin ...

│  ├──Connexin 32
│  └──Connexin 43

├──ERK ...

│  ├──ErkA
│  └──ErkB

├──Membrane Receptor ...

│  ├──G Coupled Receptor
│  └──Tyrosine Kinase Receptor

├──Kv beta ...

│  ├──Kv beta1
│  ├──Kv beta2
│  └──Kv beta3

├──ABC transporter ...

│  └──Sulfonylurea receptor ...

│     ├──SUR1
│     ├──SUR2
│     └──SUR3

├──Acetylcholine Receptor ...

│  ├──Muscarinic Acetylcholine Receptor

│  └──Nicotinic Acetylcholine Receptor ...

│     ├──Alpha 3 Acetylcholine Receptor
│     └──Alpha 7 Acetylcholine Receptor

├──Cav beta ...

│  ├──Cav beta1
│  ├──Cav beta2
│  ├──Cav beta3
│  └──Cav beta4

├──Glutamate Transporter ...

│  ├──EAAT1
│  ├──EAAT2
│  ├──EAAT3
│  └──EAAT4

├──KCa beta ...

│  ├──KCa beta1
│  ├──KCa beta2
│  ├──KCa beta3
│  └──KCa beta4

├──Nav beta ...

│  ├──Nav beta1
│  ├──Nav beta2
│  ├──Nav beta3
│  └──Nav beta4

├──Synuclein Protein ...

│  ├──Beta-Synuclein Protein
│  ├──Gamma-Synuclein Protein

│  └──Alpha-Synuclein Protein ...

│     └──non-ABeta component

├──Fluorescent protein ...

│  ├──Cyan fluorescent protein
│  ├──Red fluorescent protein
│  ├──Yellow fluorescent protein

│  └──Green fluorescent protein ...

│     └──Enhanced green fluorescent protein

├──MinK-like ...

│  ├──MinK-like 1
│  ├──MinK-like 2
│  ├──MinK-like 3
│  ├──MinK-like 4
│  └──MinK-like 5

├──Neurotrophin ...

│  ├──BDNF
│  ├──Neurotrophin-4
│  ├──NGF
│  ├──NNT-1
│  └──NT-3

├──SERCA ...

│  ├──SERCA1
│  ├──SERCA3

│  └──SERCA2 ...

│     ├──SERCA2a
│     └──SERCA2b

├──Cav gamma ...

│  ├──Cav gamma1
│  ├──Cav gamma2
│  ├──Cav gamma3
│  ├──Cav gamma4
│  ├──Cav gamma5
│  ├──Cav gamma6
│  ├──Cav gamma7
│  └──Cav gamma8

├──Cytoskeletal Protein ...

│  ├──Glial Fibrillary Acidic Protein
│  ├──Spectrin

│  ├──Actin ...

│  │  ├──F-actin
│  │  └──G-actin

│  ├──Tubulin ...

│  │  ├──Alpha Tubulin
│  │  └──Beta Tubulin

│  └──Neurofilament Protein ...

│     ├──Neurofilament 68kd
│     ├──Neurofilament 150kd
│     └──Neurofilament 200kd

├──Glutamate Receptor ...

│  ├──NMDA Receptor

│  ├──Ionotropic Glutamate Receptor ...

│  │  └──Kainate Receptor

│  ├──AMPA Receptor ...

│  │  ├──GluR1
│  │  ├──GluR2
│  │  └──GlurR3

│  └──Metabotropic Glutamate Receptor ...

│     ├──MGluR1
│     ├──MGluR2
│     ├──MGluR3
│     ├──MGluR4
│     ├──MGluR5
│     ├──MGluR6
│     ├──MGluR7
│     └──MGluR8

├──laminin complex ...

│  ├──laminin-1 complex
│  ├──laminin-2 complex
│  ├──laminin-3 complex
│  ├──laminin-4 complex
│  ├──laminin-5B complex
│  ├──laminin-6 complex
│  ├──laminin-7 complex
│  ├──laminin-8 complex
│  ├──laminin-9 complex
│  ├──laminin-10 complex
│  ├──laminin-11 complex
│  ├──laminin-12 complex
│  ├──laminin-14 complex
│  ├──laminin-15 complex
│  ├──laminin-522 complex

│  └──laminin-5 complex ...

│     └──laminin-5 complex (human)

├──Monomeric ion channel ...

│  └──Monomeric Voltage-gated ion channel ...

│     ├──Voltage-gated sodium channel ...

│     │  ├──Nax

│     │  └──Sodium channel - type 1 ...

│     │     ├──Nav1.1
│     │     ├──Nav1.2
│     │     ├──Nav1.3
│     │     ├──Nav1.4
│     │     ├──Nav1.5
│     │     ├──Nav1.6
│     │     ├──Nav1.7
│     │     ├──Nav1.8
│     │     └──Nav1.9

│     └──Voltage-gated calcium channel ...

│        ├──VGCNL1

│        ├──Calcium channel - type 2 ...

│        │  ├──Cav2.1
│        │  ├──Cav2.2
│        │  └──Cav2.3

│        ├──Calcium channel - type 3 ...

│        │  ├──Cav3.1
│        │  ├──Cav3.2
│        │  └──Cav3.2

│        └──Calcium channel - type 1 ...

│           ├──Cav1.1
│           ├──Cav1.2
│           ├──Cav1.3
│           └──Cav1.4

├──Multimeric ion channel ...

│  ├──Trimeric ion channel ...

│  │  └──ATP-gated ion channel

│  ├──Pentameric ion channel ...

│  │  └──Cys-loop ligand-gated ion channel ...

│  │     ├──Cationic cys-loop ligand-gated ion channel ...

│  │     │  ├──Acetylcholine-gated channel (nicotinic)
│  │     │  └──Serotonin-gated channel (5-HT3)

│  │     └──Anionic cys-loop ligand-gated ion channel ...

│  │        ├──GluCl glutamate-gated chloride channel
│  │        ├──Glycine-gated chloride channel
│  │        ├──Histamine-gated chloride channel
│  │        ├──Serotonin-gated anionic channel

│  │        └──GABA-gated anionic channel ...

│  │           ├──GABA C-gated anionic channel

│  │           └──GABA A-gated anionic channel ...

│  │              ├──GABRA1
│  │              └──GABRA2

│  ├──Dimeric ion channel ...

│  │  └──Inwardly rectifying potassium channel ...

│  │     ├──Inwardly rectifying potassium channel - type 1 ...

│  │     │  └──Kir1.1

│  │     ├──Inwardly rectifying potassium channel - type 5 ...

│  │     │  └──Kir5.1

│  │     ├──Inwardly rectifying potassium channel - type 7 ...

│  │     │  └──Kir7.1

│  │     ├──Inwardly rectifying potassium channel - type 4 ...

│  │     │  ├──Kir4.1
│  │     │  └──Kir4.2

│  │     ├──Inwardly rectifying potassium channel - type 6 ...

│  │     │  ├──Kir6.1
│  │     │  └──Kir6.2

│  │     ├──Inwardly rectifying potassium channel - type 2 ...

│  │     │  ├──Kir2.1
│  │     │  ├──Kir2.2
│  │     │  ├──Kir2.3
│  │     │  └──Kir2.4

│  │     └──Inwardly rectifying potassium channel - type 3 ...

│  │        ├──Kir3.1
│  │        ├──Kir3.2
│  │        ├──Kir3.3
│  │        └──Kir3.4

│  ├──Tetrameric ion channel ...

│  │  ├──Glutamate-gated cationic channel ...

│  │  │  ├──AMPA-type glutamate-gated cationic channel
│  │  │  ├──Kainate glutamate-gated cationic channel
│  │  │  └──NMDA-type glutamate-gated cationic channel

│  │  ├──Cyclic-nucleotide gated channel ...

│  │  │  ├──Cyclic-nucleotide gated channel - type B ...

│  │  │  │  ├──CNGB1
│  │  │  │  └──CNGB3

│  │  │  └──Cyclic-nucleotide gated channel - type A ...

│  │  │     ├──CNGA1
│  │  │     ├──CNGA2
│  │  │     ├──CNGA3
│  │  │     └──CNGA4

│  │  └──Calcium-activated potassium channel ...

│  │     ├──Calcium-activated potassium channel - type 1 ...

│  │     │  └──Kca1.1

│  │     ├──Calcium-activated potassium channel - type 3 ...

│  │     │  └──Kca3.1

│  │     ├──Calcium-activated potassium channel - type 5 ...

│  │     │  └──Kca5.1

│  │     ├──Calcium-activated potassium channel - type 4 ...

│  │     │  ├──Kca4.1
│  │     │  └──Kca4.2

│  │     └──Calcium-activated potassium channel - type 2 ...

│  │        ├──Kca2.1
│  │        ├──Kca2.2
│  │        └──Kca2.3

│  ├──Dimeric dimer ion channel ...

│  │  └──Two pore potassium channel ...

│  │     ├──Two pore potassium channel - type 1 ...

│  │     │  └──K2p1.1

│  │     ├──Two pore potassium channel - type 2 ...

│  │     │  └──K2p2.1

│  │     ├──Two pore potassium channel - type 3 ...

│  │     │  └──K2p3.1

│  │     ├──Two pore potassium channel - type 4 ...

│  │     │  └──K2p4.1

│  │     ├──Two pore potassium channel - type 5 ...

│  │     │  └──K2p5.1

│  │     ├──Two pore potassium channel - type 6 ...

│  │     │  └──K2p6.1

│  │     ├──Two pore potassium channel - type 7 ...

│  │     │  └──K2p7.1

│  │     ├──Two pore potassium channel - type 9 ...

│  │     │  └──K2p9.1

│  │     ├──Two pore potassium channel - type 10 ...

│  │     │  └──K2p10.1

│  │     ├──Two pore potassium channel - type 12 ...

│  │     │  └──K2p12.1

│  │     ├──Two pore potassium channel - type 13 ...

│  │     │  └──K2p13.1

│  │     ├──Two pore potassium channel - type 15 ...

│  │     │  └──K2p15.1

│  │     ├──Two pore potassium channel - type 16 ...

│  │     │  └──K2p16.1

│  │     ├──Two pore potassium channel - type 17 ...

│  │     │  └──K2birnlex_annot.1

│  │     └──Two pore potassium channel - type 18 ...

│  │        └──K2p18.1

│  └──Multimeric Voltage-gated ion channel ...

│     └──Tetrameric Voltage-gated ion channel ...

│        ├──Hyperpolarization and cyclic-nucleotide gated channel ...

│        │  ├──HCN1
│        │  ├──HCN2
│        │  ├──HCN3
│        │  └──HCN4

│        ├──Transient receptor potential related channel ...

│        │  ├──Transient receptor potential related channel - two-pore type ...

│        │  │  ├──TPC1
│        │  │  └──TPC2

│        │  ├──Transient receptor potential related channel - mucolipin type ...

│        │  │  ├──TRPML1
│        │  │  ├──TRPML2
│        │  │  └──TRPML3

│        │  ├──Transient receptor potential related channel - PKD type ...

│        │  │  ├──TRPP1
│        │  │  ├──TRPP2
│        │  │  └──TRPP3

│        │  └──Transient receptor potential related channel - sperm-specific Ca+2-selective type ...

│        │     ├──CatSper1
│        │     ├──CatSper2
│        │     ├──CatSper3
│        │     └──CatSper4

│        ├──Transient receptor potential channel ...

│        │  ├──ANKTM1

│        │  ├──Transient receptor potential channel - type V ...

│        │  │  ├──TRPV1
│        │  │  ├──TRPV2
│        │  │  ├──TRPV3
│        │  │  ├──TRPV4
│        │  │  ├──TRPV5
│        │  │  └──TRPV6

│        │  ├──Transient receptor potential channel - type C ...

│        │  │  ├──TRPC1
│        │  │  ├──TRPC2
│        │  │  ├──TRPC3
│        │  │  ├──TRPC4
│        │  │  ├──TRPC5
│        │  │  ├──TRPC6
│        │  │  └──TRPC7

│        │  └──Transient receptor potential channel - type M ...

│        │     ├──TRPM1
│        │     ├──TRPM2
│        │     ├──TRPM3
│        │     ├──TRPM4
│        │     ├──TRPM5
│        │     ├──TRPM6
│        │     ├──TRPM7
│        │     └──TRPM8

│        └──Voltage-gated potassium channel ...

│           ├──Voltage-gated potassium channel - type 5 ...

│           │  └──Kv5.1

│           ├──Voltage-gated potassium channel - type 2 ...

│           │  ├──Kv2.1
│           │  └──Kv2.2

│           ├──Voltage-gated potassium channel - type 8 ...

│           │  ├──Kv8.1
│           │  └──Kv8.2

│           ├──Voltage-gated potassium channel - type 10 ...

│           │  ├──Kv10.1
│           │  └──Kv10.2

│           ├──Voltage-gated potassium channel - type 4 ...

│           │  ├──Kv4.1
│           │  ├──Kv4.2
│           │  └──Kv4.3

│           ├──Voltage-gated potassium channel - type 9 ...

│           │  ├──Kv9.1
│           │  ├──Kv9.2
│           │  └──Kv9.3

│           ├──Voltage-gated potassium channel - type 11 ...

│           │  ├──Kv11.1
│           │  ├──Kv11.2
│           │  └──Kv11.3

│           ├──Voltage-gated potassium channel - type 12 ...

│           │  ├──Kv12.1
│           │  ├──Kv12.2
│           │  └──Kv12.3

│           ├──Voltage-gated potassium channel - type 3 ...

│           │  ├──Kv3.1
│           │  ├──Kv3.2
│           │  ├──Kv3.3
│           │  └──Kv3.4

│           ├──Voltage-gated potassium channel - type 6 ...

│           │  ├──Kv6.1
│           │  ├──Kv6.2
│           │  ├──Kv6.3
│           │  └──Kv6.4

│           ├──Voltage-gated potassium channel - type 7 ...

│           │  ├──Kv7.1
│           │  ├──Kv7.2
│           │  ├──Kv7.3
│           │  ├──Kv7.4
│           │  └──Kv7.5

│           └──Voltage-gated potassium channel - type 1 ...

│              ├──Kv1.1
│              ├──Kv1.2
│              ├──Kv1.3
│              ├──Kv1.4
│              ├──Kv1.5
│              ├──Kv1.6
│              ├──Kv1.7
│              └──Kv1.8

└──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