Cysteinyl leukotriene receptor

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The cysteinyl leukotriene receptors (CysLTRs) include the following two receptors:

Cysteinyl leukotriene receptor 1 (CysLTR1)
Cysteinyl leukotriene receptor 2 (CysLTR2)

The recently elucidated CysLT_E, represented by GPR99/OXGR1, may constitute a third CysLTR.^[1]

See also[]

Leukotriene receptor
Eicosanoid receptor

References[]

^ Kanaoka Y, Maekawa A, Austen KF (2013). "Identification of GPR99 protein as a potential third cysteinyl leukotriene receptor with a preference for leukotriene E4 ligand". J. Biol. Chem. 288 (16): 10967–72. doi:10.1074/jbc.C113.453704. PMC 3630866. PMID 23504326.

Cell surface receptor: G protein-coupled receptors

Class A: Rhodopsin-like

Neurotransmitter

Adrenergic	α1 (A B D) α2 (A B C) β1 β2 β3
Purinergic	Adenosine (A1 A2A A2B A3) P2Y (1 2 4 5 6 8 9 10 11 12 13 14)
Serotonin	(all but 5-HT3) 5-HT1 (A B D E F) 5-HT2 (A B C) 5-HT (4 5A 6 7)
Other	Acetylcholine (M1 M2 M3 M4 M5) Dopamine D1 D2 D3 D4 D5 GHB receptor Histamine H1 H2 H3 H4 Melatonin (1A 1B 1C) TAAR (1 2 5 6 8 9)

Metabolites and
signaling molecules

Eicosanoid	CysLT (1 2) LTB4 1 2 FPRL1 OXE Prostaglandin DP (1 2), EP (1 2 3 4), FP Prostacyclin Thromboxane
Other	Bile acid Cannabinoid (CB1 CB2, GPR (18 55 119)) EBI2 Estrogen Free fatty acid (1 2 3 4) Hydroxycarboxylic acids 1 2 3 Lysophosphatidic acid (1 2 3 4 5 6) Lysophospholipid (1 2 3 4 5 6 7 8) Oxoglutarate PAF Sphingosine-1-phosphate (1 2 3 4 5) Succinate

Peptide

Neuropeptide

B/W (1
2)
FF (1
2)
S
Y (1
2
4
5)
Neuromedin (B
U (1
2))
Neurotensin (1
2)

Other

Miscellaneous

Taste, bitter	TAS2R 1 3 4 5 7 8 9 10 13 14 16 19 20 30 31 38 39 40 41 42 43 45 46 50 60 Vomeronasal receptor type 1
Orphan	GPR (1 3 4 6 12 15 17 18 19 20 21 22 23 25 26 27 31 32 33 34 35 37 39 42 44 45 50 52 55 61 62 63 65 68 75 77 78 81 82 83 84 85 87 88 92 101 103 109A 109B 119 120 132 135 137B 139 141 142 146 148 149 150 151 152 153 160 161 162 171 173 174 176 177 182 183)
Other	Adrenomedullin Olfactory Opsin (3 4 5 1LW 1MW 1SW RGR RRH) Protease-activated (1 2 3 4) SREB (1 2 3)

Class B: Secretin-like

Adhesion	ADGRG (1 2 3 4 5 6 7)
Orphan	GPR (56 64 97 98 110 111 112 113 114 115 116 123 124 125 126 128 133 143 144 155 157)
Other	Brain-specific angiogenesis inhibitor (1 2 3) Cadherin (1 2 3) Calcitonin CALCRL CD97 Corticotropin-releasing hormone (1 2) EMR (1 2 3) Glucagon (GR GIPR GLP1R GLP2R) Growth-hormone-releasing hormone PACAPR1 GPR Latrophilin (1 2 3 ELTD1) Methuselah-like proteins Parathyroid hormone (1 2) Secretin Vasoactive intestinal peptide (1 2)

Class C: Metabotropic glutamate / pheromone

Taste, sweet	TAS1R 1 2 3 Vomeronasal receptor, type 2
Other	Calcium-sensing receptor GABA_B (1 2) Glutamate receptor (Metabotropic glutamate (1 2 3 4 5 6 7 8)) GPRC6A GPR (156 158 179) RAIG (1 2 3 4)

Class F: Frizzled & Smoothened

Frizzled	Frizzled (1 2 3 4 5 6 7 8 9 10)
Smoothened	Smoothened

Leukotriene signaling modulators

Receptor
(ligands)

BLT₁	Agonists: 12-HETE Leukotriene B₄ Antagonists: Etalocib
BLT₂	Agonists: 12-HETE 12-HHT 15-HETE Leukotriene B₄ Antagonists:

CysLT₁	Agonists: Leukotriene C₄ Leukotriene D₄ Leukotriene E₄ Antagonists: Ablukast Montelukast Pranlukast Zafirlukast
CysLT₂	Agonists: Leukotriene C₄ Leukotriene D₄ Leukotriene E₄ Antagonists:
CysLT_E	Agonists: Leukotriene E₄

Enzyme
(inhibitors)

5-LOX	Baicalein Caffeic acid Curcumin Fenleuton Hyperforin Hypericum perforatum (St. John's Wort) Meclofenamic acid (meclofenamate) Minocycline Zileuton FLAP inhibitors: AM-679 MK-886
12-LOX	Baicalein
15-LOX	Luteolin
LTA₄H	Captopril Fosinoprilat Ubenimex (bestatin)
LTB₄H
LTC₄S	Azelastine MK-886
LTC₄H	Acivicin
LTD₄	Cilastatin Ubenimex (bestatin)

Others

Precursors: Linoleic acid
γ-Linolenic acid (gamolenic acid)
Dihomo-γ-linolenic acid
Diacylglycerol
Arachidonic acid
5-HPETE (arachidonic acid 5-hydroperoxide)
Leukotriene A₄

See also: Receptor/signaling modulators; Prostanoid signaling modulators

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