GPCR Ligands
Rhodopsin family: amine receptors
Acetylcholine (muscarinic)
CHRM1; cholinergic receptor, muscarinic 1 [KO:K04129]
CHRM2; cholinergic receptor, muscarinic 2 [KO:K04130]
CHRM3; cholinergic receptor, muscarinic 3 [KO:K04131]
CHRM4; cholinergic receptor, muscarinic 4 [KO:K04132]
CHRM5; cholinergic receptor, muscarinic 5 [KO:K04133]
CHRMN; cholinergic receptor, invertebrate [KO:K04134]
Adrenaline
ADRA1A; adrenergic receptor, alpha 1a [KO:K04135]
ADRA1B; adrenergic receptor, alpha 1b [KO:K04136]
ADRA1D; adrenergic receptor, alpha 1d [KO:K04137]
ADRA2A; adrenergic receptor, alpha 2a [KO:K04138]
ADRA2B; adrenergic receptor, alpha 2b [KO:K04139]
ADRA2C; adrenergic receptor, alpha 2c [KO:K04140]
C07886 Brimonidine Partial Agonist
C07450 Dexmedetomidine Full Agonist
C00788 Epinephrine Full Agonist
C07037 Guanfacine Partial Agonist
C00547 Norepinephrine Partial Agonist
C07363 Oxymetazoline Partial Agonist
D02076 Brimonidine tartrate (USAN) Partial Agonist
D00281 Clonidine (JAN/USAN) Partial Agonist
D00604 Clonidine hydrochloride (JP14/USP) Partial Agonist
D02149 Epinephrine bitartrate (JAN/USP) Full Agonist
D00996 Epinephrine hydrochloride (JAN) Full Agonist
D00606 Guanfacine hydrochloride (JAN/USP) Partial Agonist
D01022 Oxymetazoline hydrochloride (JAN/USP) Partial Agonist
C06906 Chlorpromazine Antagonist
C07952 Chlorpromazine hydrochloride Antagonist
C07368 Prazosin Antagonist
C09256 Yohimbine Antagonist
D03274 Chlorpromazine hibenzate (JAN) Antagonist
D04034 Chlorpromazine phenolphthalinate (JAN) Antagonist
D00509 Phentolamine mesilate (JAN) Antagonist
D00609 Prazosin hydrochloride (JAN/USP) Antagonist
ADRB1; adrenergic receptor, beta 1 [KO:K04141]
ADRB2; adrenergic receptor, beta 2 [KO:K04142]
ADRB3; adrenergic receptor, beta 3 [KO:K04143]
Dopamine
DRD1; dopamine receptor D1 [KO:K04144]
DRD2; dopamine receptor D2 [KO:K04145]
DRD3; dopamine receptor D3 [KO:K04146]
DRD4; dopamine receptor D4 [KO:K04147]
DRD5; dopamine receptor D5 [KO:K05840]
DRDN; dopamine receptor, invertebrate [KO:K04148]
Histamine
HRH1; histamine receptor H1 [KO:K04149]
HRH2; histamine receptor H2 [KO:K04150]
HRH3; histamine receptor H3 [KO:K04151]
HRH4; histamine receptor H4 [KO:K04152]
Serotonin
HTR1A; 5-hydroxytryptamine (serotonin) receptor 1A [KO:K04153]
HTR1B; 5-hydroxytryptamine (serotonin) receptor 1B [KO:K04154]
HTR1D; 5-hydroxytryptamine (serotonin) receptor 1D [KO:K04155]
HTR1E; 5-hydroxytryptamine (serotonin) receptor 1E [KO:K04331]
HTR1F; 5-hydroxytryptamine (serotonin) receptor 1F [KO:K04156]
HTR2A; 5-hydroxytryptamine (serotonin) receptor 2A [KO:K04157]
HTR2B; 5-hydroxytryptamine (serotonin) receptor 2B [KO:K04158]
HTR2C; 5-hydroxytryptamine (serotonin) receptor 2C [KO:K04159]
HTR4; 5-hydroxytryptamine (serotonin) receptor 4 [KO:K04160]
HTR5A; 5-hydroxytryptamine (serotonin) receptor 5A [KO:K04161]
HTR6; 5-hydroxytryptamine (serotonin) receptor 6 [KO:K04162]
HTR7; 5-hydroxytryptamine (serotonin) receptor 7 [KO:K04163]
HTRN; 5-hydroxytryptamine (serotonin) receptor, invertebrate [KO:K04164]
Octopamine
OAMB; Oamb gene product from transcript [KO:K04165]
Trace amine
TAR; trace amine receptor [KO:K05051]
Rhodopsin family: peptide receptors
Angiotensin
AGTR1; angiotensin II receptor, type 1 [KO:K04166]
AGTR2; angiotensin II receptor, type 2 [KO:K04167]
Apelin
AGTRL1; apelin receptor [KO:K04174]
Bombesin
NMBR; neuromedin B receptor [KO:K04168]
GRPR; gastrin-releasing peptide receptor [KO:K04169]
BRS3; bombesin-like receptor 3 [KO:K04170]
Bradykinin
BDKRB1; bradykinin receptor B1 [KO:K03915]
BDKRB2; bradykinin receptor B2 [KO:K03916]
C5a anaphylatoxin
C5R1; complement component 5 receptor 1 [KO:K04010]
C3AR1; complement component 3a receptor 1 [KO:K04009]
GPR77; G protein-coupled receptor 77 [KO:K04171]
CC Chemokine
CCR1; chemokine (C-C motif) receptor 1 [KO:K04176]
CCR2; chemokine (C-C motif) receptor 2 [KO:K04177]
CCR3; chemokine (C-C motif) receptor 3 [KO:K04178]
CCR4; chemokine (C-C motif) receptor 4 [KO:K04179]
CCR5; chemokine (C-C motif) receptor 5 [KO:K04180]
CCR6; chemokine (C-C motif) receptor 6 [KO:K04181]
CCR7; chemokine (C-C motif) receptor 7 [KO:K04182]
CCR8; chemokine (C-C motif) receptor 8 [KO:K04183]
CCR9; chemokine (C-C motif) receptor 9 [KO:K04184]
CCR10; chemokine (C-C motif) receptor 10 [KO:K04185]
CCRL1; chemokine (C-C motif) receptor 11 [KO:K04186]
CCRL2; chemokine (C-C motif) receptor-like 2 [KO:K08373]
CCBP2; chemokine binding protein 2 [KO:K04187]
FY, DARC; Duffy blood group [KO:K06574]
CXC Chemokine
IL8RA, CXCR1; interleukin 8 receptor, alpha [KO:K04175]
IL8RB, CXCR2; interleukin 8 receptor, beta [KO:K05050]
CXCR3; chemokine (C-X-C motif) receptor 3 [KO:K04188]
CXCR4; chemokine (C-X-C motif) receptor 4 [KO:K04189]
CXCR5; chemokine (C-X-C motif) receptor 5 [KO:K04190]
CXCR6; chemokine (C-X-C motif) receptor 6 [KO:K04191]
CX3C Chemokine
CX3CR1; chemokine (C-X3-C motif) receptor 1 [KO:K04192]
C Chemokine
XCR1; chemokine (C motif) receptor 1 [KO:K04193]
Cholecystokinin
CCKAR; cholecystokinin A receptor [KO:K04194]
CCKBR; cholecystokinin B receptor [KO:K04195]
CCKNR; cholecystokinin receptor, invertebrate [KO:K04196]
Endothelin
EDNRA; endothelin receptor type A [KO:K04197]
EDNRB; endothelin receptor type B [KO:K04198]
fMet-Leu-Phe
FPR1; formyl peptide receptor 1 [KO:K04172]
FPRL; formyl peptide receptor-like [KO:K04173]
Galanin
GALR1; galanin receptor 1 [KO:K04230]
GALR2; galanin receptor 2 [KO:K04231]
GALR3; galanin receptor 3 [KO:K04232]
GALRN; galanin receptor, invertebrate [KO:K04233]
Ghrelin
GHSR; growth hormone secretagogue receptor [KO:K04284]
KiSS1-derived peptide
KISS1R; KISS1 receptor [KO:K08374]
Melanocortin
MC1R; melanocortin 1 receptor [KO:K04199]
MC2R; melanocortin 2 receptor [KO:K04200]
MC3R; melanocortin 3 receptor [KO:K04201]
MC4R; melanocortin 4 receptor [KO:K04202]
MC5R; melanocortin 5 receptor [KO:K04203]
Motilin
MLNR; motilin receptor [KO:K05266]
Neuromedin U
NMUR1; neuromedin U receptor 1 [KO:K05052]
NMUR2; neuromedin U receptor 2 [KO:K05053]
Neuropeptide FF
NPFFR1; neuropeptide FF receptor 1 [KO:K04240]
NPFFR2; neuropeptide FF receptor 2 [KO:K08375]
Neuropeptide S
NPSR1, GPR154; neuropeptide S receptor 1 [KO:K08376]
Neuropeptide Y
NPY1R; neuropeptide Y receptor Y1 [KO:K04204]
NPY2R; neuropeptide Y receptor Y2 [KO:K04205]
NPY4R, PPYR1; neuropeptide Y receptor Y4 [KO:K04206]
NPY5R; neuropeptide Y receptor Y5 [KO:K04207]
NPY6R; neuropeptide Y receptor Y6 [KO:K04208]
GPR83, GPR72; G protein-coupled receptor 83 [KO:K04210]
NPYNR; neuropeptide Y receptor, invertebrate [KO:K04209]
Neuropeptide W / neuropeptide B
NPBWR1; neuropeptides B/W receptor 1 [KO:K05268]
NPBWR2; neuropeptides B/W receptor 2 [KO:K08377]
Neurotensin
NTSR1; neurotensin receptor 1 [KO:K04211]
NTSR2; neurotensin receptor 2 [KO:K04212]
Orexigenic neuropeptide QRFP
GPR103; G protein-coupled receptor 103 [KO:K08378]
Opioid
OPRD1; opioid receptor, delta 1 [KO:K04213]
OPRK1; opioid receptor, kappa 1 [KO:K04214]
OPRM1; opioid receptor, mu 1 [KO:K04215]
OPRL1; opiate receptor-like 1 [KO:K04216]
Orexin
HCRTR1; hypocretin (orexin) receptor 1 [KO:K04238]
HCRTR2; hypocretin (orexin) receptor 2 [KO:K04239]
Oxytocin
OXTR; oxytocin receptor [KO:K04229]
Prokineticin
PROKR1; prokineticin receptor 1 [KO:K08379]
PROKR2; prokineticin receptor 2 [KO:K08380]
Somatostatin
SSTR1; somatostatin receptor 1 [KO:K04217]
SSTR2; somatostatin receptor 2 [KO:K04218]
SSTR3; somatostatin receptor 3 [KO:K04219]
SSTR4; somatostatin receptor 4 [KO:K04220]
SSTR5; somatostatin receptor 5 [KO:K04221]
Tachykinin
TACR1; tachykinin receptor 1 [KO:K04222]
TACR2; tachykinin receptor 2 [KO:K04223]
TACR3; tachykinin receptor 3 [KO:K04224]
TACRN; tachykinin receptor, invertebrate [KO:K04225]
Urotensin II
UTS2R; urotensin 2 receptor [KO:K04241]
Vasopressin
AVPR1A; arginine vasopressin receptor 1A [KO:K04226]
AVPR1B; arginine vasopressin receptor 1B [KO:K04227]
AVPR2; arginine vasopressin receptor 2 [KO:K04228]
Protease-activated (thrombin)
F2R, PAR1; coagulation factor II (thrombin) receptor [KO:K03914]
F2RL1, PAR2; coagulation factor II (thrombin) receptor-like 1 [KO:K04234]
F2RL2, PAR3; coagulation factor II (thrombin) receptor-like 2 [KO:K04235]
F2RL3, PAR4; coagulation factor II (thrombin) receptor-like 3 [KO:K04236]
PARD3; par-3 partitioning defective 3 homolog [KO:K04237]
Adrenomedullin (G10D)
ADMR; adrenomedullin receptor [KO:K04242]
GPR37 / endothelin B like
GPR37; G protein-coupled receptor 37 (endothelin receptor type B-like) [KO:K04243]
ETBRLP2; endothelin type b receptor-like protein 2 [KO:K04244]
Chemokine receptor like
CMKLR1; chemokine-like receptor 1 [KO:K04245]
GPR30; G protein-coupled receptor 30 [KO:K04246]
GPR32; G protein-coupled receptor 32 [KO:K08381]
GPR33; G protein-coupled receptor 33 [KO:K08382]
GPR34; G protein-coupled receptor 34 [KO:K08383]
GPR44; G protein-coupled receptor 44 [KO:K06715]
Melanin-concentrating hormone
MCHR1; melanin-concentrating hormone receptor 1 [KO:K04320]
MCHR2; melanin-concentrating hormone receptor 2 [KO:K05054]
Follicle stimulating hormone
FSHR; follicle stimulating hormone receptor [KO:K04247]
Lutropin-choriogonadotropic hormone
LHCGR; luteinizing hormone/choriogonadotropin receptor [KO:K04248]
Thyrotropin
TSHR; thyroid stimulating hormone receptor [KO:K04249]
Rhodopsin family: other receptors
Rhodopsin
OPN2; rhodopsin [KO:K04250]
OPN4; opsin 4 (melanopsin) [KO:K04255]
OPN3; opsin 3 (encephalopsin, panopsin) [KO:K04256]
OPN5; opsin 5 [KO:K08385]
OPN1MW; rhodopsin vertebrate type 2 [KO:K04251]
OPN1SW; rhodopsin vertebrate type 3 [KO:K04252]
RRH; retinal pigment epithelium-derived rhodopsin homolog [KO:K04253]
RGR; retinal G protein-coupled receptor [KO:K04254]
Olfactory
OLFR; olfactory receptor [KO:K04257]
Prostaglandin
PTGDR; prostaglandin D2 receptor [KO:K04332]
PTGER1; prostaglandin E receptor 1 [KO:K04258]
PTGER2; prostaglandin E receptor 2 [KO:K04259]
PTGER3; prostaglandin E receptor 3 [KO:K04260]
PTGER4; prostaglandin E receptor 4 [KO:K04261]
PTGFR; prostaglandin F receptor [KO:K04262]
Prostacyclin
PTGIR; prostaglandin I2 (prostacyclin) receptor [KO:K04263]
Thromboxane
TBXA2R; thromboxane A2 receptor [KO:K04264]
Adenosine
ADORA1; adenosine A1 receptor [KO:K04265]
ADORA2A; adenosine A2a receptor [KO:K04266]
ADORA2B; adenosine A2b receptor [KO:K04267]
ADORA3; adenosine A3 receptor [KO:K04268]
Purine / pyrimidine
P2RY1; purinergic receptor P2Y, G protein-coupled, 1 [KO:K04270]
P2RY2; purinergic receptor P2Y, G protein-coupled, 2 [KO:K04269]
P2RY4; pyrimidinergic receptor P2Y, G protein-coupled, 4 [KO:K04271]
P2RY5; purinergic receptor P2Y, G protein-coupled, 5 [KO:K04273]
P2RY6; pyrimidinergic receptor P2Y, G protein-coupled, 6 [KO:K04272]
P2RY8; purinergic receptor P2Y, G protein-coupled, 8 [KO:K08386]
P2RY10; purinergic receptor P2Y, G protein-coupled, 10 [KO:K04274]
P2RY11; purinergic receptor P2Y, G protein-coupled, 11 [KO:K08387]
P2RY12; purinergic receptor P2Y, G protein-coupled, 12 [KO:K04298]
P2RY13; purinergic receptor P2Y, G protein-coupled, 13 [KO:K08388]
P2RY14; purinergic receptor P2Y, G protein-coupled, 14 [KO:K04299]
GPR23; G protein-coupled receptor 23 [KO:K04275]
GPR35; G protein-coupled receptor 35 [KO:K04276]
GPR87; G protein-coupled receptor 87 [KO:K08389]
SUCNR1, GPR91; succinate receptor 1 [KO:K10042]
GPR92; G protein-coupled receptor 92 [KO:K08390]
GPR174; G protein-coupled receptor 174 [KO:K08391]
Cannabinoid
CNR1; cannabinoid receptor 1 (brain) [KO:K04277]
CNR2; cannabinoid receptor 2 (macrophage) [KO:K04278]
Platelet activating factor
PTAFR; platelet-activating factor receptor [KO:K04279]
Gonadotropin-releasing hormone
GNRHR; gonadotropin-releasing hormone receptor [KO:K04280]
Thyrotropin-releasing hormone
TRHR; thyrotropin-releasing hormone receptor [KO:K04282]
Melatonin
MTNR1A; melatonin receptor 1A [KO:K04285]
MTNR1B; melatonin receptor 1B [KO:K04286]
GPR50; G protein-coupled receptor 50 [KO:K04287]
Lysosphingolipid and LPA (EDG)
EDG1; endothelial differentiation, sphingolipid G protein-coupled receptor 1 [KO:K04288]
EDG2; endothelial differentiation, lysophosphatidic acid G protein-coupled receptor 2 [KO:K04289]
EDG3; endothelial differentiation, sphingolipid G protein-coupled receptor 3 [KO:K04290]
EDG4; endothelial differentiation, lysophosphatidic acid G protein-coupled receptor 4 [KO:K04291]
EDG5; endothelial differentiation, sphingolipid G protein-coupled receptor 5 [KO:K04292]
EDG6; endothelial differentiation, G protein-coupled receptor 6 [KO:K04293]
EDG7; endothelial differentiation, lysophosphatidic acid G protein-coupled receptor 7 [KO:K04294]
EDG8; endothelial differentiation, sphingolipid G protein-coupled receptor 8 [KO:K04295]
Leukotriene B4 receptor
LTB4R1; leukotriene B4 receptor 1 [KO:K04296]
LTB4R2; leukotriene B4 receptor 2 [KO:K04297]
SREB
GPR27, SREB1; G protein-coupled receptor 27 [KO:K04301]
GPR85, SREB2; G protein-coupled receptor 85 [KO:K04302]
SREB3, GPR173; super conserved receptor expressed in brain 3 [KO:K04300]
Mas proto-oncogene & Mas-related (MRGs)
MAS1; MAS1 oncogene [KO:K04303]
MAS1L; MAS1 oncogene-like [KO:K04324]
MRGPRD; MAS-related GPR, member D [KO:K08392]
MRGPRE; MAS-related GPR, member E [KO:K08393]
MRGPRF; MAS-related GPR, member F [KO:K08394]
MRGPRG; MAS-related GPR, member G [KO:K08395]
MRGPRX; MAS-related GPR, member X [KO:K08396]
RDC1
RDC1; chemokine orphan receptor 1 [KO:K04304]
EBV-induced
EBI2; Epstein-Barr virus induced gene 2 [KO:K04305]
Relaxin
LGR7; leucine-rich repeat-containing G protein-coupled receptor 7 [KO:K04306]
LGR8; leucine-rich repeat-containing G protein-coupled receptor 8 [KO:K04307]
RXFP3, RLN3R1; relaxin family peptide receptor 3 [KO:K08397]
RXFP4, RLN3R2; relaxin family peptide receptor 4 [KO:K08398]
LGR like
LGR4, GPR48; leucine-rich repeat-containing G protein-coupled receptor 4 [KO:K04309]
LGR5, GPR49; leucine-rich repeat-containing G protein-coupled receptor 5 [KO:K04308]
LGR6; leucine-rich repeat-containing G protein-coupled receptor 6 [KO:K08399]
Free fatty acid
FFAR1, GPR40; free fatty acid receptor 1 [KO:K04325]
FFAR1L, GPR42; G protein-coupled receptor 42 [KO:K04327]
FFAR2, GPR43; free fatty acid receptor 2 [KO:K04328]
FFAR3, GPR41; free fatty acid receptor 3 [KO:K04326]
GPR120; G protein-coupled receptor 120 [KO:K08425]
G protein-coupled bile acid
GPBAR1; G protein-coupled bile acid receptor 1 [KO:K08400]
Nicotinic acid
GPR81; G protein-coupled receptor 81 [KO:K08401]
GPR109; G protein-coupled receptor 109 [KO:K08402]
GPR
GPR1; G protein-coupled receptor 1 [KO:K04310]
GPR3; G protein-coupled receptor 3 [KO:K04311]
GPR4; G protein-coupled receptor 4 [KO:K04312]
GPR6; G protein-coupled receptor 6 [KO:K04313]
PRLHR, GPR10; prolactin releasing hormone receptor [KO:K04314]
GPR12; G protein-coupled receptor 12 [KO:K04315]
GPR15; G protein-coupled receptor 15 [KO:K08403]
GPR17; G protein-coupled receptor 17 [KO:K08404]
GPR19; G protein-coupled receptor 19 [KO:K04316]
GPR20; G protein-coupled receptor 20 [KO:K04317]
GPR21; G protein-coupled receptor 21 [KO:K04318]
GPR22; G protein-coupled receptor 22 [KO:K04319]
GPR25; G protein-coupled receptor 25 [KO:K08405]
GPR31; G protein-coupled receptor 31 [KO:K08406]
GPR52; G protein-coupled receptor 52 [KO:K08407]
GPR68; G protein-coupled receptor 68 [KO:K08408]
GPR45 like
GPR45; G protein-coupled receptor 45 [KO:K08409]
GPR63; G protein-coupled receptor 63 [KO:K04321]
Cysteinyl leukotriene
CYSLTR1; cysteinyl leukotriene receptor 1 [KO:K04322]
CYSLTR2; cysteinyl leukotriene receptor 2 [KO:K04323]
Putative / unclassified Class A GPCRs
GPR18; G protein-coupled receptor 18 [KO:K08410]
GPR26; G protein-coupled receptor 26 [KO:K08411]
GPR39; G protein-coupled receptor 39 [KO:K08412]
GPR55; G protein-coupled receptor 55 [KO:K08413]
GPR61; G protein-coupled receptor 61 [KO:K08414]
GPR62; G protein-coupled receptor 62 [KO:K08415]
GPR65; G protein-coupled receptor 65 [KO:K08416]
GPR75; G protein-coupled receptor 75 [KO:K08417]
GPR78; G protein-coupled receptor 78 [KO:K08418]
OXGR1, GPR78; oxoglutarate (alpha-ketoglutarate) receptor 1 [KO:K08419]
GPR82; G protein-coupled receptor 82 [KO:K08420]
GPR84; G protein-coupled receptor 84 [KO:K08421]
GPR88; G protein-coupled receptor 88 [KO:K08422]
GPR101; G protein-coupled receptor 101 [KO:K08423]
GPR119; G protein-coupled receptor 119 [KO:K08424]
GPR132; G protein-coupled receptor 132 [KO:K08426]
GPR135; G protein-coupled receptor 135 [KO:K08427]
GPR139; G protein-coupled receptor 139 [KO:K08428]
GPR141; G protein-coupled receptor 141 [KO:K08429]
GPR142; G protein-coupled receptor 142 [KO:K08430]
GPR146; G protein-coupled receptor 146 [KO:K08431]
GPR148; G protein-coupled receptor 148 [KO:K08432]
GPR149; G protein-coupled receptor 149 [KO:K08433]
GPR150; G protein-coupled receptor 150 [KO:K08434]
GPR151; G protein-coupled receptor 151 [KO:K08435]
GPR152; G protein-coupled receptor 152 [KO:K08436]
GPR153; G protein-coupled receptor 153 [KO:K08437]
GPR160; G protein-coupled receptor 160 [KO:K08438]
GPR161; G protein-coupled receptor 161 [KO:K08439]
GPR162; G protein-coupled receptor 162 [KO:K08440]
OXER1, GPR170; oxoeicosanoid receptor 1 [KO:K10043]
GPR171; G protein-coupled receptor 171 [KO:K08441]
GPR176; G protein-coupled receptor 176 [KO:K08442]
Secretin family
Calcitonin
CALCR; calcitonin receptor [KO:K04576]
CALCRL; calcitonin receptor-like [KO:K04577]
Corticotropin releasing factor
CRHR1; corticotropin releasing hormone receptor 1 [KO:K04578]
CRHR2; corticotropin releasing hormone receptor 2 [KO:K04579]
Gastric inhibitory peptide
GIPR; gastric inhibitory polypeptide receptor [KO:K04580]
Glucagon
GLP1R; glucagon-like peptide 1 receptor [KO:K04581]
GLP2R; glucagon-like peptide 2 receptor [KO:K04582]
GCGR; glucagon receptor [KO:K04583]
Growth hormone-releasing hormone
GHRHR; growth hormone releasing hormone receptor [KO:K04584]
Parathyroid hormone
PTHR1; parathyroid hormone receptor 1 [KO:K04585]
PTHR2; parathyroid hormone receptor 2 [KO:K04586]
PACAP
PACAPRI; adenylate cyclase activating polypeptide 1 (pituitary) receptor type I [KO:K04587]
Secretin
SCTR; secretin receptor [KO:K04588]
Vasoactive intestinal polypeptide
VIPR1; vasoactive intestinal peptide receptor 1 [KO:K04589]
VIPR2; vasoactive intestinal peptide receptor 2 [KO:K04590]
EMR1
EMR1; egf-like module containing, mucin-like, hormone receptor-like 1 [KO:K04591]
EMR2; egf-like module containing, mucin-like, hormone receptor-like 2 [KO:K08443]
EMR3; egf-like module containing, mucin-like, hormone receptor-like 3 [KO:K08444]
EMR4; egf-like module containing, mucin-like, hormone receptor-like 4 [KO:K08445]
CD97; CD97 molecule [KO:K08446]
Latrophilin
LPHN1; latrophilin 1 [KO:K04592]
LPHN2; latrophilin 2 [KO:K04593]
LPHN3; latrophilin 3 [KO:K04594]
ELTD1; latrophilin and seven transmembrane domain containing 1 [KO:K04595]
Brain-specific angiogenesis inhibitor (BAI)
BAI1; brain-specific angiogenesis inhibitor 1 [KO:K04596]
BAI2; brain-specific angiogenesis inhibitor 2 [KO:K04597]
BAI3; brain-specific angiogenesis inhibitor 3 [KO:K04598]
Methuselah-like proteins (MTH)
MTH; G protein-coupled receptor Mth (Methuselah protein) [KO:K04599]
Cadherin EGF LAG (CELSR)
CELSR1; cadherin, EGF LAG seven-pass G-type receptor 1 (flamingo homolog, Drosophila) [KO:K04600]
CELSR2; cadherin, EGF LAG seven-pass G-type receptor 2 (flamingo homolog, Drosophila) [KO:K04601]
CELSR3; cadherin, EGF LAG seven-pass G-type receptor 3 (flamingo homolog, Drosophila) [KO:K04602]
Putative / unclassified Class B GPCRs
RAMP1; receptor (calcitonin) activity modifying protein 1 [KO:K08447]
RAMP2; receptor (calcitonin) activity modifying protein 2 [KO:K08448]
RAMP3; receptor (calcitonin) activity modifying protein 3 [KO:K08449]
GPR56; G protein-coupled receptor 56 [KO:K08450]
GPR64; G protein-coupled receptor 64 [KO:K08451]
GPR97; G protein-coupled receptor 97 [KO:K08452]
GPR110; G protein-coupled receptor 110 [KO:K08453]
GPR111; G protein-coupled receptor 111 [KO:K08454]
GPR112; G protein-coupled receptor 112 [KO:K08455]
GPR113; G protein-coupled receptor 113 [KO:K08456]
GPR114; G protein-coupled receptor 114 [KO:K08459]
GPR115; G protein-coupled receptor 115 [KO:K08457]
GPR116; G protein-coupled receptor 116 [KO:K08458]
GPR123; G protein-coupled receptor 123 [KO:K08460]
GPR124; G protein-coupled receptor 124 [KO:K08461]
GPR125; G protein-coupled receptor 125 [KO:K08462]
GPR126; G protein-coupled receptor 126 [KO:K08463]
GPR128; G protein-coupled receptor 128 [KO:K08464]
GPR133; G protein-coupled receptor 133 [KO:K08465]
GPR144; G protein-coupled receptor 144 [KO:K08466]
GPR157; G protein-coupled receptor 157 [KO:K08467]
Metabotropic glutamate family
Glutamate (metabotropic)
GRM1; glutamate receptor, metabotropic 1 [KO:K04603]
GRM2; glutamate receptor, metabotropic 2 [KO:K04605]
GRM3; glutamate receptor, metabotropic 3 [KO:K04606]
GRM4; glutamate receptor, metabotropic 4 [KO:K04607]
GRM5; glutamate receptor, metabotropic 5 [KO:K04604]
GRM6; glutamate receptor, metabotropic 6 [KO:K04608]
GRM7; glutamate receptor, metabotropic 7 [KO:K04609]
GRM8; glutamate receptor, metabotropic 8 [KO:K04610]
GRMN; glutamate receptor, metabotropic, invertebrate [KO:K04611]
Extracellular calcium-sensing
CASR; calcium-sensing receptor [KO:K04612]
GABA-B
GABBR1; gamma-aminobutyric acid (GABA) B receptor, 1 [KO:K04615]
GABBR2; gamma-aminobutyric acid (GABA) B receptor, 2 [KO:K04616]
GABABL; gamma-aminobutyric acid (GABA) B receptor-like [KO:K04617]
Pheromone (V2R)
V2R; vomeronasal 2, receptor [KO:K04613]
Taste receptors (T1R)
TAS1R1; taste receptor, type 1, member 1 [KO:K04624]
TAS1R2; taste receptor, type 1, member 2 [KO:K04625]
TAS1R3; taste receptor, type 1, member 3 [KO:K04626]
Orphan GPRC5
GPRC5A; G protein-coupled receptor, family C, group 5, member A [KO:K08468]
GPRC5B; G protein-coupled receptor, family C, group 5, member B [KO:K04619]
GPRC5C; G protein-coupled receptor, family C, group 5, member C [KO:K04620]
GPRC5D; G protein-coupled receptor, family C, group 5, member D [KO:K04621]
Orphan GPCR6
GPRC6A; G protein-coupled receptor, family C, group 6, member A [KO:K04622]
Bride of sevenless proteins (BOSS)
BOSS; bride of sevenless protein [KO:K04623]
Putative / unclassified Class C GPCRs
GPR158; G protein-coupled receptor 158 [KO:K08469]
Other families
Frizzled / Smoothened family
FZD1; frizzled 1 [KO:K02432]
FZD2; frizzled 2 [KO:K02235]
FZD3; frizzled 3 [KO:K02329]
FZD4; frizzled 4 [KO:K02354]
FZD5; frizzled 5 [KO:K02375]
FZD6; frizzled 6 [KO:K02376]
FZD7; frizzled 7 [KO:K02378]
FZD8; frizzled 8 [KO:K02534]
FZD9; frizzled 9 [KO:K02645]
FZD10; frizzled 10 [KO:K02842]
FZDN; frizzled, invertebrate [KO:K04690]
SMO; smoothened [KO:K06226]
Ocular albinism proteins
OA1, GPR143; Ocular albinism type 1 protein [KO:K08470]
Vomeronasal receptors (V1R)
V1R; vomeronasal 1 receptor [KO:K04614]
Taste receptors (T2R)
TAS2R; taste receptor, type 2 [KO:K08474]
Insect odorant receptors
GR; gustatory receptor [KO:K08471]
Nematode chemoreceptors
K08473; Nematode chemoreceptor [KO:K08473]
Plant Mlo receptors
MLO; mlo protein [KO:K08472]
Fungal pheromone
K04627; fungal pheromone [KO:K04627]
cAMP (Dictyostelium)
CARN; cAMP receptor [KO:K04629]
Bacterial rhodopsin
BOP; bacteriorhodopsin [KO:K04641]
HOP; halorhodopsin [KO:K04642]
SOP; sensory rhodopsin [KO:K04643]
[ BRITE | KEGG2 | KEGG ]
Last updated: August 7, 2007