+D Receptor KO
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G Protein-Coupled Receptors - Procambarus clarkii (red swamp crayfish)
%
!
ARhodopsin family
B Biogenic amine
C Acetylcholine (muscarinic)
D 123749145 mAChR-A; muscarinic acetylcholine receptor DM1 K04131 CHRM3; muscarinic acetylcholine receptor M3
D 123752337 muscarinic acetylcholine receptor gar-2 K04131 CHRM3; muscarinic acetylcholine receptor M3
D 123760397 muscarinic acetylcholine receptor gar-2-like K04131 CHRM3; muscarinic acetylcholine receptor M3
D 123750738 uncharacterized protein K04132 CHRM4; muscarinic acetylcholine receptor M4
C Adrenaline
D 123756401 protein trapped in endoderm-1 isoform X1 K04135 ADRA1A; adrenergic receptor alpha-1A
D 123751677 probable G-protein coupled receptor No18 isoform X1 K04136 ADRA1B; adrenergic receptor alpha-1B
D 123763521 alpha-1A adrenergic receptor K04136 ADRA1B; adrenergic receptor alpha-1B
D 138352161 alpha-1A adrenergic receptor-like K04136 ADRA1B; adrenergic receptor alpha-1B
D 138357779 probable G-protein coupled receptor No18 isoform X1 K04136 ADRA1B; adrenergic receptor alpha-1B
D 123771978 beta-3 adrenergic receptor isoform X1 K04143 ADRB3; adrenergic receptor beta-3
C Dopamine
D 123774560 Dop2R; dopamine D2-like receptor K04145 DRD2; dopamine receptor D2
D 123751393 dopamine receptor 2 K04148 DRD1N; dopamine receptor D1-like
C Dopamine and ecdysteroid
D 123746880 probable G-protein coupled receptor 21 K22919 DopEcR; dopamine/ecdysteroid receptor
C Histamine
D 123757473 histamine H1 receptor K04149 HRH1; histamine receptor H1
C Octopamine and tryamine
D 123748023 probable G-protein coupled receptor No9 K04165 Oamb; octopamine receptor
D 123764675 alpha-2B adrenergic receptor K22814 Octalpha; octopamine receptor alpha
D 123753034 alpha-2 adrenergic receptor K22790 Octbeta; octopamine receptor beta
D 123761778 octopamine receptor beta-2R K22790 Octbeta; octopamine receptor beta
D 123774677 octopamine receptor beta-2R K22790 Octbeta; octopamine receptor beta
D 123746125 probable G-protein coupled receptor No18 isoform X1 K22815 Oct-TyrR; octopamine/tyramine receptor
D 123746126 probable G-protein coupled receptor No18 K22815 Oct-TyrR; octopamine/tyramine receptor
D 123746127 probable G-protein coupled receptor No18 K22815 Oct-TyrR; octopamine/tyramine receptor
D 123746129 probable G-protein coupled receptor No18 K22815 Oct-TyrR; octopamine/tyramine receptor
D 138349500 probable G-protein coupled receptor No18 K22815 Oct-TyrR; octopamine/tyramine receptor
D 138349501 probable G-protein coupled receptor No18 K22815 Oct-TyrR; octopamine/tyramine receptor
C Serotonin
D 123750456 5-hydroxytryptamine receptor K04153 HTR1; 5-hydroxytryptamine receptor 1
D 123751347 5-hydroxytryptamine receptor isoform X2 K04153 HTR1; 5-hydroxytryptamine receptor 1
D 123762694 5-hydroxytryptamine receptor 2B K04157 HTR2; 5-hydroxytryptamine receptor 2
D 123761725 uncharacterized protein isoform X2 K04160 HTR4; 5-hydroxytryptamine receptor 4
D 123759604 5-hydroxytryptamine receptor 1 isoform X1 K04163 HTR7; 5-hydroxytryptamine receptor 7
C Trace amine
B Peptide
C Adrenomedullin (G10D)
C Adropin
C Apelin
D 123753848 apelin receptor K04174 APLNR; apelin receptor
C Anaphylatoxin
C Angiotensin
C BigLEN
C Bombesin
D 123750214 neuropeptide CCHamide-1 receptor K04170 BRS3; bombesin receptor subtype-3
D 123751875 neuropeptide CCHamide-1 receptor-like K04170 BRS3; bombesin receptor subtype-3
D 123765485 neuropeptide CCHamide-1 receptor K04170 BRS3; bombesin receptor subtype-3
D 123767558 neuropeptide CCHamide-1 receptor K04170 BRS3; bombesin receptor subtype-3
C Bradykinin
C Cholecystokinin
D 123771734 galanin receptor 2b K04194 CCKAR; cholecystokinin A receptor
C Endothelin
C fMet-Leu-Phe
C Follicle stimulating hormone (FSH)
C Galanin
D 123753760 kiSS-1 receptor K08374 KISS1R; KISS1 receptor
D 123774910 allatostatin-A receptor K04233 ASTA-R; allatostatin A receptor
C Ghrelin
C Gonadotropin-releasing hormone (GnRH)
D 123747411 gonadotropin-releasing hormone receptor K04280 GNRHR; gonadotropin-releasing hormone receptor
D 123755676 gonadotropin-releasing hormone receptor-like K04280 GNRHR; gonadotropin-releasing hormone receptor
D 123766290 CrzR; gonadotropin-releasing hormone receptor K04280 GNRHR; gonadotropin-releasing hormone receptor
D 123771208 gonadotropin-releasing hormone receptor isoform X1 K28251 AkhR; adipokinetic hormone receptor
C Lutropin-choriogonadotropic hormone
D 123762160 lutropin-choriogonadotropic hormone receptor K04248 LHCGR; lutropin-choriogonadotropic hormone receptor
D 123768835 uncharacterized protein K04248 LHCGR; lutropin-choriogonadotropic hormone receptor
C Melanin-concentrating hormone (MCH)
C Melanocortin
C Motilin
C Neuromedin U
D 123754960 neuromedin-U receptor 2 K05052 NMUR1; neuromedin U receptor 1
D 123767563 pyrokinin-1 receptor isoform X1 K05052 NMUR1; neuromedin U receptor 1
C Neuropeptide FF
D 123747423 neuropeptide SIFamide receptor K08375 NPFFR2; neuropeptide FF receptor 2
D 123766584 neuropeptide SIFamide receptor isoform X1 K08375 NPFFR2; neuropeptide FF receptor 2
C Neuropeptide S
D 123769473 cardioacceleratory peptide receptor isoform X3 K08376 NPSR1; neuropeptide S receptor
C Neuropeptide W / neuropeptide B
C Neuropeptide Y
D 123750049 neuropeptide Y receptor type 6-like K04204 NPY1R; neuropeptide Y receptor type 1
D 123751258 prolactin-releasing peptide receptor-like K04209 NPFR; neuropeptide F receptor
D 123762833 neuropeptide Y receptor type 6-like K04209 NPFR; neuropeptide F receptor
C Neurotensin
C Opioid
D 138354734 dentin sialophosphoprotein-like K27951 OGFR; opioid growth factor receptor
C Orexigenic neuropeptide QRFP
C Orexin
D 123763456 substance-K receptor K04239 HCRTR2; hypocretin (orexin) receptor 2
D 123765854 QRFP-like peptide receptor K04239 HCRTR2; hypocretin (orexin) receptor 2
D 138350724 substance-K receptor-like K04239 HCRTR2; hypocretin (orexin) receptor 2
C Oxytocin
C Prokineticin
C Prolactin-releasing peptide (PrRP)
C Prosaposin
C Relaxin
D 123773049 G-protein coupled receptor GRL101 isoform X1 K04307 RXFP2; relaxin family peptide receptor 2
C Somatostatin
D 123774862 somatostatin receptor type 2 K04218 SSTR2; somatostatin receptor 2
D 123748168 somatostatin receptor type 5-like K04221 SSTR5; somatostatin receptor 5
D 123761043 somatostatin receptor type 2 K22872 ASTC-R; allatostatin C receptor
D 123761256 somatostatin receptor type 5 K22872 ASTC-R; allatostatin C receptor
D 123761260 somatostatin receptor type 2-like K22872 ASTC-R; allatostatin C receptor
D 123770759 somatostatin receptor type 5-like K22872 ASTC-R; allatostatin C receptor
C Tachykinin
D 123756730 tachykinin-like peptides receptor 99D isoform X1 K04224 TACR3; tachykinin receptor 3
D 123751167 substance-P receptor isoform X1 K14071 LKR; leucokinin receptor
D 123749509 RYamide receptor-like K14072 Rya-R; RYamide receptor
D 123753587 RYamide receptor K14072 Rya-R; RYamide receptor
C Thrombin
C Thyrotropin
C Thyrotropin-releasing hormone (TRH)
D 123747541 LOW QUALITY PROTEIN: thyrotropin-releasing hormone receptor K04282 TRHR; thyrotropin-releasing hormone receptor
C Urotensin II
C Vasopressin
D 123773370 oxytocin receptor-like K04226 AVPR1A; arginine vasopressin receptor 1A
D 123745802 cephalotocin receptor 1 K04227 AVPR1B; arginine vasopressin receptor 1B
C Neuropeptide receptors
D 123757492 SPR; LOW QUALITY PROTEIN: sex peptide receptor K26200 SPR; sex peptide receptor
D 123757574 LOW QUALITY PROTEIN: FMRFamide receptor K26201 FMRFaR; FMRFamide receptor
D 123761942 FMRFamide receptor K26202 Proc-R; proctolin receptor
D 123753838 G-protein coupled receptor dmsr-1 K26203 MsR; myosuppressin receptor
D 123762723 G-protein coupled receptor dmsr-1-like K26203 MsR; myosuppressin receptor
B Chemokine
C CC Chemokine
D 123761722 C-C chemokine receptor type 6 K04181 CCR6; C-C chemokine receptor type 6
C CXC Chemokine
C CX3C Chemokine
C C Chemokine
C Chemokine like
B Base and nucleoside
C Purine / pyrimidine
C Adenosine
D 123763595 uncharacterized protein isoform X1 K04266 ADORA2A; adenosine receptor A2a
D 123763598 adenosine receptor A1 K04266 ADORA2A; adenosine receptor A2a
B Lipid
C Arachidonylglycine
C Bile acid
C Cysteinyl leukotriene
C Free fatty acid
C HETE and oxoETE
C Leukotriene
C Lysophosphatidic acid
C Lysophosphatidylinositol
C Lysophosphatidylserine
C Oleoylethanolamide
C Prostaglandin
D 123767932 prostaglandin E2 receptor EP4 subtype K04261 PTGER4; prostaglandin E receptor 4
C Prostacyclin
C Sphingolipid
C Thromboxane
B Vision
C Opsin
D 123758789 uncharacterized protein isoform X1 K04256 OPN3; c-opsin
D 123766823 parapinopsin-like K04256 OPN3; c-opsin
D 123755378 opsin, ultraviolet-sensitive K04255 OPN4; r-opsin
D 123756291 compound eye opsin BCRH2 K04255 OPN4; r-opsin
D 123757273 rhodopsin-like K04255 OPN4; r-opsin
D 123757279 rhodopsin K04255 OPN4; r-opsin
D 123757349 opsin, ultraviolet-sensitive K04255 OPN4; r-opsin
D 123759654 rhodopsin K04255 OPN4; r-opsin
D 123745341 opsin-5 K08385 OPN5; G0-opsin
B Others
C Alpha-ketoglutarate
C Cannabinoid
D 123755389 tyramine receptor Ser-2 K04278 CNR2; cannabinoid receptor 2
D 138366633 tyramine receptor Ser-2-like K04278 CNR2; cannabinoid receptor 2
C Estrogen
C Hydroxy-carboxylic acid
C L-Tryptophan and L-Phenylalanine
C Mas proto-oncogene and Mas-related (MRGs)
C Melatonin
C Oxysterol
C Platelet activating factor
C Proton-sensing GPCRs
C R-spondin
D 123754269 leucine-rich repeat-containing G-protein coupled receptor 4 isoform X1 K08399 LGR6; leucine-rich repeat-containing G protein-coupled receptor 6
D 123755382 leucine-rich repeat-containing G-protein coupled receptor 5 isoform X1 K08399 LGR6; leucine-rich repeat-containing G protein-coupled receptor 6
C Super conserved receptor expressed in brain (SREB)
C Trissin
D 123752243 trissin receptor K22792 TrissinR; trissin receptor
D 123773305 TrissinR; trissin receptor K22792 TrissinR; trissin receptor
C Orphan GPCRs / unclassified GPCRs
D 123754109 protein trapped in endoderm-1 K22873 TRE1; protein trapped in endoderm-1
D 123758865 protein trapped in endoderm-1 isoform X1 K22873 TRE1; protein trapped in endoderm-1
D 123761088 protein trapped in endoderm-1-like K22873 TRE1; protein trapped in endoderm-1
D 138367515 protein trapped in endoderm-1-like K22873 TRE1; protein trapped in endoderm-1
D 123774779 G-protein coupled receptor 52 K08407 GPR52; G protein-coupled receptor 52
D 123774780 G-protein coupled receptor 52 K08407 GPR52; G protein-coupled receptor 52
D 123747000 LOW QUALITY PROTEIN: N-arachidonyl glycine receptor K08423 GPR101; G protein-coupled receptor 101
D 123753032 cardioacceleratory peptide receptor K08434 GPR150; G protein-coupled receptor 150
D 123769845 LOW QUALITY PROTEIN: uncharacterized protein K08439 GPR161; G protein-coupled receptor 161
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ASecretin receptor family
B Calcium-regulating peptide
C Calcitonin
D 123752675 calcitonin gene-related peptide type 1 receptor isoform X1 K04577 CALCRL; calcitonin receptor-like
C Parathyroid hormone
D 123768817 secretin receptor K04585 PTH1R; parathyroid hormone receptor 1
B Hypothalamic hormone
C Corticotropin-releasing hormone (CRH)
D 123758913 corticotropin-releasing factor receptor 2 K04579 CRHR2; corticotropin releasing hormone receptor 2
D 123767200 corticotropin-releasing factor receptor 2 K04579 CRHR2; corticotropin releasing hormone receptor 2
D 123768826 corticotropin-releasing factor receptor 1 K04579 CRHR2; corticotropin releasing hormone receptor 2
C Growth hormone-releasing hormone (GHRH)
B Pancreatic peptide
C Glucagon
B Gut peptide
C Gastric inhibitory peptide (GIP)
C Vasoactive intestinal polypeptide (VIP) and pituitary adenyl cyclase-activating peptide (PACAP)
C Secretin
B Others
C Receptor activity modifying protein
C Methuselah-like proteins (MTH)
D 123751960 probable G-protein coupled receptor Mth-like 3 isoform X1 K04599 MTH; G protein-coupled receptor Mth (Methuselah protein)
D 123758930 probable G-protein coupled receptor Mth-like 3 K04599 MTH; G protein-coupled receptor Mth (Methuselah protein)
D 123761079 probable G-protein coupled receptor Mth-like 4 K04599 MTH; G protein-coupled receptor Mth (Methuselah protein)
D 123769144 probable G-protein coupled receptor Mth-like 2 isoform X1 K04599 MTH; G protein-coupled receptor Mth (Methuselah protein)
D 138349767 G-protein coupled receptor Mth2-like K04599 MTH; G protein-coupled receptor Mth (Methuselah protein)
C Pigment dispersing factor (PDF)
D 123767584 PDF receptor K22738 PDFR; PDF receptor
D 123770891 PDF receptor K22738 PDFR; PDF receptor
D 123772955 PDF receptor isoform X1 K22738 PDFR; PDF receptor
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AAdhesion receptor family
B Cadherin EGF LAG (CELSR)
C 123770832 stan; protocadherin-like wing polarity protein stan isoform X1 K04600 CELSR1; cadherin EGF LAG seven-pass G-type receptor 1
B EGF-like module-containing mucin-like hormone receptor-like (EMR)
B Latrophilin
C 123746966 latrophilin Cirl isoform X1 K04593 ADGRL2; adhesion G protein-coupled receptor L2
C 123774651 latrophilin Cirl K04593 ADGRL2; adhesion G protein-coupled receptor L2
B Brain-specific angiogenesis inhibitor (BAI)
B Others
C 123770457 adhesion G protein-coupled receptor A3 K08462 ADGRA3; adhesion G protein-coupled receptor A3
C 123745805 adhesion G-protein coupled receptor D1 K08465 ADGRD1; adhesion G-protein coupled receptor D1
C 123753959 adhesion G-protein coupled receptor D1 K08465 ADGRD1; adhesion G-protein coupled receptor D1
C 123758371 LOW QUALITY PROTEIN: cadherin EGF LAG seven-pass G-type receptor 3 K08465 ADGRD1; adhesion G-protein coupled receptor D1
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AMetabotropic glutamate receptor family
B Glutamate (metabotropic)
C 123745931 metabotropic glutamate receptor 3 K04606 GRM3; metabotropic glutamate receptor 3
C 123750728 LOW QUALITY PROTEIN: metabotropic glutamate receptor-like K04606 GRM3; metabotropic glutamate receptor 3
C 123772135 metabotropic glutamate receptor 3 isoform X1 K04606 GRM3; metabotropic glutamate receptor 3
C 123763970 uncharacterized protein isoform X1 K04604 GRM5; metabotropic glutamate receptor 5
C 123761594 metabotropic glutamate receptor 8-like K04610 GRM8; metabotropic glutamate receptor 8
C 123752907 metabotropic glutamate receptor 4 K04611 MXR; metabotropic X receptor
C 123757792 metabotropic glutamate receptor 6-like K04611 MXR; metabotropic X receptor
B GABA
C 123759100 LOW QUALITY PROTEIN: gamma-aminobutyric acid type B receptor subunit 2 K04615 GABBR; gamma-aminobutyric acid type B receptor
C 123768982 GABA-B-R1; gamma-aminobutyric acid type B receptor subunit 1 isoform X1 K04615 GABBR; gamma-aminobutyric acid type B receptor
C 138364891 uncharacterized protein K04615 GABBR; gamma-aminobutyric acid type B receptor
B Calcium-sensing
B Orphan GPRC5
C 123745986 boss; metabotropic glutamate receptor 3 K04623 BOSS; bride of sevenless protein
B Unclassified GPCRs
C 123756339 uncharacterized protein K08469 GPR158; G protein-coupled receptor 158
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AFrizzled / Smoothened family
B 123761751 fz; frizzled-2-like K02432 FZD1_7; frizzled 1/7
B 123755545 frizzled-8 K02235 FZD2; frizzled 2
B 123768457 frizzled-4 K02354 FZD4; frizzled 4
B 123761599 frizzled-5 K02375 FZD5_8; frizzled 5/8
B 123758302 frizzled-10 K02842 FZD9_10; frizzled 9/10
B 123762304 smo; protein smoothened isoform X1 K06226 SMO; smoothened
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AOthers
B Chemoreception
C Olfactory
D 123760366 olfactory receptor 4S1 K04257 OLFR; olfactory receptor
C Taste
C Vomeronasal pheromone
C Insect odorant and taste
D 138354119 uncharacterized protein K08471 GR; gustatory receptor
C Nematode chemoreception
C Fungal mating pheromone
B Others
C Ocular albinism proteins
D 123746916 G-protein coupled receptor 143 K08470 OA1; ocular albinism type 1 protein
C Neuronostatin
D 123762720 protein GPR107 K22985 GPR107; G protein-coupled receptor 107
C Plant Mlo receptors
C cAMP signaling
C Bacterial rhodopsin
C Orphan GPCRs
D 123756450 transmembrane protein adipocyte-associated 1 homolog K22988 TPRA1; transmembrane protein adipocyte-associated 1
D 123762997 LOW QUALITY PROTEIN: G protein-coupled receptor 137Ba-like K22989 GPR137; integral membrane protein GPR137
!
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#[ BRITE | KEGG2 | KEGG ]
#Last updated: April 22, 2025
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Classification taken and modified from GPCRDB