Bradykinin receptor B2

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BDKRB2
Identifiers
AliasesBDKRB2, B2R, BK-2, BK2, BKR2, BRB2, bradykinin receptor B2
External IDsOMIM: 113503; MGI: 102845; HomoloGene: 519; GeneCards: BDKRB2; OMA:BDKRB2 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_000623
NM_001379692

NM_009747

RefSeq (protein)

NP_000614
NP_001366621

NP_033877

Location (UCSC)Chr 14: 96.2 – 96.24 MbChr 12: 105.53 – 105.56 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Bradykinin receptor B2 is a G-protein coupled receptor for bradykinin, encoded by the BDKRB2 gene in humans.

Mechanism

The B2 receptor is a G protein-coupled receptor, probably coupled to Gq and Gi. Gq stimulates phospholipase C to increase intracellular free calcium and Gi inhibits adenylate cyclase. Furthermore, the receptor stimulates the mitogen-activated protein kinase pathways. It is ubiquitously and constitutively expressed in healthy tissues.

The B2 receptor forms a complex with angiotensin converting enzyme (ACE), and this is thought to play a role in cross-talk between the renin-angiotensin system (RAS) and the kinin-kallikrein system (KKS). The heptapeptide angiotensin (1-7) also potentiates bradykinin action on B2 receptors.[5]

Kallidin also signals through the B2 receptor. An antagonist for the receptor is Hoe 140 (icatibant).[6]

Function

The 9 amino acid bradykinin peptide elicits many responses including vasodilation, edema, smooth muscle spasm and pain fiber stimulation.

Gene

Alternate start codons result in two isoforms of the protein.[7]

See also

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000168398Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000021070Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Fernandes L, Fortes ZB, Nigro D, Tostes RC, Santos RA, Catelli De Carvalho MH (2001). "Potentiation of bradykinin by angiotensin-(1-7) on arterioles of spontaneously hypertensive rats studied in vivo". Hypertension. 37 (2 Part 2): 703–9. doi:10.1161/01.hyp.37.2.703. PMID 11230360.
  6. ^ Wirth K, Hock FJ, Albus U, Linz W, Alpermann HG, Anagnostopoulos H, Henk S, Breipohl G, König W, Knolle J (1991). "Hoe 140 a new potent and long acting bradykinin-antagonist: in vivo studies". Br. J. Pharmacol. 102 (3): 774–7. doi:10.1111/j.1476-5381.1991.tb12249.x. PMC 1917928. PMID 1364852.
  7. ^ "Entrez Gene: BDKRB2 bradykinin receptor B2".

Further reading

External links

This article incorporates text from the United States National Library of Medicine, which is in the public domain.