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Angiotenzinski receptor

Angiotenzinski II receptor, tip 1
Identifikatori
SimbolAGTR1
Alt. simboliAGTR1B
IUPHARAT1
Entrez185
HUGO336
OMIM106165
RefSeqNM_000685
UniProtP30556
Ostali podaci
LokusHromozom 3 q21-q25
Angiotenzinski II receptor tip 2
Identifikatori
SimbolAGTR2
IUPHARAT2
Entrez186
HUGO338
OMIM300034
RefSeqNM_000686
UniProtP50052
Ostali podaci
LokusHromozom X q22-q23

Angiotenzinski receptori su klasa G protein-spregnutih receptora čiji ligandi su angiotenzini.[1] Oni su značajni u renin-angiotenzin sistemu, gde su odgovorni za prenos signala glavnog hormonskog efektora.[2]

Struktura

[уреди | уреди извор]

AT1 i AT2 su receptori sa ~30% zajedničke sekvence. Oni imaju sličan afinitet za angiotenzin II, koji je njihov glavni ligand.

Članovi

[уреди | уреди извор]

Pregled

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Receptor Mehanizam[3]
AT1
AT2
AT3
AT4

Mehanizam

[уреди | уреди извор]

Angiotenzinski receptor se aktivira vazokonstrikcinim peptidom angiotenzinom II. Aktivirani receptor se spreže sa Gq/11 i Gi/o. Time se aktivira fosfolipaza C i povećava citosolna koncentracija Ca2+, čime se iniciraju ćelijski responsi kao što je stimulacija proteinske kinaze C. Aktivirani receptor takođe inhibira adenilat ciklazu i aktivira razne tirozinske kinaze.[2]

Vidi još

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  • Antagonist angiotenzinskog II receptora

Literatura

[уреди | уреди извор]
  1. ^ de Gasparo M, Catt KJ, Inagami T, Wright JW, Unger T (2000). „International union of pharmacology. XXIII. The angiotensin II receptors”. Pharmacol. Rev. 52 (3): 415—72. PMID 10977869. Архивирано из оригинала 16. 03. 2009. г. Приступљено 12. 03. 2011. 
  2. ^ а б Higuchi S, Ohtsu H, Suzuki H, Shirai H, Frank GD, Eguchi S (2007). „Angiotensin II signal transduction through the AT1 receptor: novel insights into mechanisms and pathophysiology”. Clin. Sci. 112 (8): 417—28. PMID 17346243. doi:10.1042/CS20060342. 
  3. ^ „Senselab”. Архивирано из оригинала 28. 02. 2009. г. 

Spoljašnje veze

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Klasa A: Rodopsinu slični
Neurotransmiter
Adrenergički
α1 (A, B, D) • α2 (A, B, C) • β1 • β2 • β3
Purinski
Adenozinski (A1, A2A, A2B, A3) • P2Y (1, 2, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14)
Serotoninski
(svi osim 5-HT3) 5-HT1 (A, B, D, E, F) • 5-HT2 (A, B, C) • 5-HT (4, 5A, 6, 7)
Drugi
Acetilholin (M1, M2, M3, M4, M5) • Dopamin (D1, D2, D3, D4, D5) • Histamin (H1, H2, H3, H4) • Melatonin (1A, 1B, 1C) • TAAR (1, 2, 3, 5, 6, 8, 9)
Metaboliti i
signalni molekuli
Eikozanoidni
CysLT (1, 2) • LTB4 (1, 2) • FPRL1 • OXE • Prostaglandin (DP (1, 2), EP (1, 2, 3, 4), FP) • Prostaciklin • Tromboksan
Drugi
Žučna kiselina • Kanabinoidni (CB1, CB2, GPR (18, 55, 119)) • EBI2 • Estrogen • Slobodna masna kiselina (1, 2, 3, 4) • Laktat • Lizofosfatidna kiselina (1, 2, 3, 4, 5, 6) • Lizofosfolipid (1, 2, 3, 4, 5, 6, 7, 8) • Niacin (1, 2) • Oksoglutarat • PAF • Sfingozin-1-fosfat (1, 2, 3, 4, 5) • Sukcinat
Peptid
Neuropeptidni
B/W (1, 2) • FF (1, 2) • S • Y (1, 2, 4, 5) • Neuromedin (B, U (1, 2)) • Neurotenzin (1, 2)
Drugi
Anafilatoksin (C3a, C5a) • Angiotenzin (1, 2) • Apelin • Bombezin (BRS3, GRPR, NMBR) • Bradikinin (B1, B2) • Hemokin • Holecistokinin (A, B) • Endotelin (A, B) • Formil peptid (1, 2, 3) • FSH • Galanin (1, 2, 3) • GHB receptor • Gonadotropin-oslobađajući hormon (1, 2) • Grelin • Kispeptin • Luteinizirajući hormon/horiogonadotropin • MAS (1, 1L, D, E, F, G, X1, X2, X3, X4) • Melanokortin (1, 2, 3, 4, 5) • MCHR (1, 2) • Motilin • Opioidni (δ, κ, μ, Nociceptin & ζ, ali ne σ) • Oreksin (1, 2) • Oksitocin • Prokineticin (1, 2) • Prolaktin-oslobađajući peptid • Relaksin (1, 2, 3, 4) • Somatostatin (1, 2, 3, 4, 5) • Tahikinin (1, 2, 3) • Tirotropin • Tirotropin-oslobađajući hormon • Urotenzin-II • Vazopresin (1A, 1B, 2)
Razno
Orfan
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)
Drugi
Adrenomedulin • Mirisni • Opsin (3, 4, 5, 1LW, 1MW, 1SW, RGR, RRH) • Proteazom-aktivirani (1, 2, 3, 4) • SREB (1, 2, 3)
Klasa B: Sekretinu slični
Orfan
GPR (56, 64, 97, 98, 110, 111, 112, 113, 114, 115, 116, 123, 124, 125, 126, 128, 133, 143, 144, 155, 157)
Drugi
Klasa C: Metabotropni
glutamat / feromon
Ukus
TAS1R (1, 2, 3) • TAS2R (1, 3, 4, 5, 8, 9, 10, 12, 13, 14, 16, 19, 20, 30, 31, 38, 39, 40, 41, 42, 43, 45, 46, 50)
Drugi
Kalcijum-detektujući receptor • GABA B (1, 2) • Glutamatni receptor (Metabotropni glutamat (1, 2, 3, 4, 5, 6, 7, 8)) • GPRC6A • GPR (156, 158, 179) • RAIG (1, 2, 3, 4) • VNR (1, 2, 3, 5)
Klasa F:
Frizzled / Zaglađeni
Uvojiti
Frizzled (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
Zaglađeni
Hormonski receptori
Hipotalamusni
CRH – FSH – LHRH – TRH – Somatostatin
Hipofizni
Drugi
Opioidni receptori
Delta – Kapa – Mi – Sigma (1, 2) – Nociceptin
Drugi neuropeptidni receptori
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Angiotenzinski receptor
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