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Wikipedia

Rhodopsin-like receptors

From Wikipedia, the free encyclopedia

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Rhodopsin-like receptors
Identifiers
Symbol7tm_1
PfamPF00001
InterProIPR000276
PROSITEPDOC00211
SCOP1f88
OPM family6
OPM protein1gzm

Rhodopsin-like receptors are a family of proteins which comprise the largest group of G-protein coupled receptors.[1]

Contents

Scope

G-protein-coupled receptors, GPCRs, constitute a vast protein family that encompasses a wide range of functions (including various autocrine, paracrine and endocrine processes). They show considerable diversity at the sequence level, on the basis of which they can be separated into distinct groups. GPCRs are usually described as "superfamily" because they embrace a group of families for which there are indications of evolutionary relationship, but between which there is no statistically significant similarity in sequence.[1] The currently known superfamily members include the rhodopsin-like GPCRs, the secretin-like GPCRs, the cAMP receptors, the fungal mating pheromone receptors, and the metabotropic glutamate receptor family. There is a specialised database for GPCRs.[2]

Function

The rhodopsin-like GPCRs themselves represent a widespread protein family that includes hormone, neurotransmitter and light receptors, all of which transduce extracellular signals through interaction with guanine nucleotide-binding (G) proteins. Although their activating ligands vary widely in structure and character, the amino acid sequences of the receptors are very similar and are believed to adopt a common structural framework comprising 7 transmembrane (TM) helices.[3][4][5]

Classes

Rhodopsin-like GPCRs have been classified into the following 19 subgroups (A1-A19) based on a phylogenetic analysis.[6]

Subfamily A1

Subfamily A2

Subfamily A3

Subfamily A4

Subfamily A5

Subfamily A6

Subfamily A7

Subfamily A8

Subfamily A9

Subfamily A10

Subfamily A11

Subfamily A12

Subfamily A13

Subfamily A14

Subfamily A15

Subfamily A16

Subfamily A17

Subfamily A18

Subfamily A19

Unclassified

References

  1. ^ a b Attwood TK, Findlay JB (1994). [Expression error: Missing operand for > "Fingerprinting G-protein-coupled receptors"]. Protein Eng. 7 (2): 195–203. doi:10.1093/protein/7.2.195. PMID 8170923. 
  2. ^ "Information system for G protein-coupled receptors". GPCRDB. www.gpcr.org. http://www.gpcr.org/7tm/data/. Retrieved 2008-12-05. 
  3. ^ Birnbaumer L (1990). [Expression error: Missing operand for > "G proteins in signal transduction"]. Annu. Rev. Pharmacol. Toxicol. 30: 675–705. doi:10.1146/annurev.pa.30.040190.003331. PMID 2111655. 
  4. ^ Gilman AG, Casey PJ (1988). [Expression error: Missing operand for > "G protein involvement in receptor-effector coupling"]. J. Biol. Chem. 263 (6): 2577–2580. PMID 2830256. 
  5. ^ Attwood TK, Findlay JB (1993). [Expression error: Missing operand for > "Design of a discriminating fingerprint for G-protein-coupled receptors"]. Protein Eng. 6 (2): 167–176. doi:10.1093/protein/6.2.167. PMID 8386361. 
  6. ^ Joost P, Methner A (2002). [Expression error: Missing operand for > "Phylogenetic analysis of 277 human G-protein-coupled receptors as a tool for the prediction of orphan receptor ligands"]. Genome Biol 3 (11): research0063.1–0063.16. doi:10.1186/gb-2002-3-11-research0063. PMID 12429062. 
  7. ^ Terakita A (2005). [Expression error: Missing operand for > "The opsins"]. Genome Biol. 6 (3): 213. doi:10.1186/gb-2005-6-3-213. PMID 15774036. 

External links

v • d • e
Transmembrane receptor: G protein-coupled receptors
Class A: Rhodopsin like
α1 (A, B, D) · α2 (A, B, C) · β1 · β2 · β3
CysLT (1, 2) · LTB4 (1, 2) · FPRL1 · OXE · Prostaglandin (DP (1, 2), EP (1, 2, 3, 4), FP) · Prostacyclin · Thromboxane
B/W (1, 2) · FF (1, 2) · S · Y (1, 2, 4, 5) · Neuromedin (B, U (1, 2)) · Neurotensin (1, 2)
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, 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)
Adenosine (A1, A2A, A2B, A3) · P2Y (1, 2, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14)
(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) · Adrenomedullin · Anaphylatoxin (C3a, C5a) · Angiotensin (1, 2) · Apelin · Bile acid · Bombesin (BRS3, GRPR, NMBR) · Bradykinin (B1, B2) · Cannabinoid (CB1, CB2) · Chemokine · Cholecystokinin (A, B) · Dopamine (D1, D2, D3, D4, D5) · EBI2 · Endothelin (A, B) · Estrogen · Formyl peptide (1, 2, 3) · Free fatty acid (1, 2, 3, 4) · FSH · Galanin (1, 2, 3) · Gonadotropin-releasing hormone (1, 2) · GHB receptor · Ghrelin · Histamine (H1, H2, H3, H4) · Kisspeptin · Luteinizing hormone/choriogonadotropin · lysophosphatidic acid (1, 2, 3, 4, 5, 6)  · Lysophospholipid (1, 2, 3, 4, 5, 6, 7, 8) · MAS (1, 1L, D, E, F, G, X1, X2, X3, X4) · Melanocortin (1, 2, 3, 4, 5) · MCHR (1, 2) · Melatonin (1A, 1B, 1C) · Niacin (1, 2) · Motilin · Opioid (Delta, Kappa, Mu, Nociceptin & Zeta, but not Sigma) · Olfactory · Opsin (3, 4, 5, 1LW, 1MW, 1SW, RGR, RRH) · Orexin (1, 2) · Oxytocin · Oxoglutarate · PAF · Prokineticin (1, 2) · Prolactin-releasing peptide · Protease-activated (1, 2, 3, 4) · Relaxin (1, 2, 3, 4) · Somatostatin (1, 2, 3, 4, 5) · Sphingosine-1-phosphate (1, 2, 3, 4, 5) · SREB · Succinate · TAAR (1, 2, 3, 5, 6, 8, 9) · Tachykinin (1, 2, 3) · Thyrotropin · Thyrotropin-releasing hormone · Urotensin-II · Vasopressin (1A, 1B, 2)
Class B: Secretin like
GPR (56, 64, 97, 98, 110, 111, 112, 113, 114, 115, 116, 123, 124, 125, 126, 128, 133, 143, 144, 157)
Other
Class C: Metabotropic
glutamate / pheromone
TAS1R (1, 2, 3) · TAS2R (1, 3, 4, 5, 8, 9, 10, 12, 13, 14, 16, 38, 39, 40, 41, 43, 44, 45, 46, 47, 48, 49, 50)
Other
Frizzled / Smoothened
Frizzled (1, 2, 3, 4, 5, 6, 7, 8, 9, 10) · Smoothened

 

All translations of Rhodopsin-like_receptors


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