prokineticin 2
Dernière mise à jour 18 Aug 2020
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La PROK2 gene provides instructions for making a protein called prokineticin 2. This protein interacts with another protein called prokineticin receptor 2 (produced from the PROKR2 gene). On the cell surface, prokineticin 2 attaches (binds) to the receptor like a key in a lock. When the two proteins are connected, they trigger a series of chemical signals within the cell that regulate various cell functions. Prokineticin 2 and its receptor are produced in many organs and tissues, including the small intestine, certain regions of the brain, and several hormone-producing (endocrine) tissues.
Normal function
La PROK2 gene provides instructions for making a protein called prokineticin 2. This protein interacts with another protein called prokineticin receptor 2 (produced from the PROKR2 gene). On the cell surface, prokineticin 2 attaches (binds) to the receptor like a key in a lock. When the two proteins are connected, they trigger a series of chemical signals within the cell that regulate various cell functions. Prokineticin 2 and its receptor are produced in many organs and tissues, including the small intestine, certain regions of the brain, and several hormone-producing (endocrine) tissues.
Prokineticin 2 and its receptor play a role in the development of a group of nerve cells that are specialized to process smells (olfactory neurons). These neurons move (migrate) from the developing nose to a structure in the front of the brain called the olfactory bulb, which is critical for the perception of odors. Prokineticin 2 and its receptor are also involved in the migration of nerve cells that produce gonadotropin-releasing hormone (GnRH). GnRH controls the production of several hormones that direct sexual development before birth and during puberty. These hormones are also important for the normal function of the ovaries in women and the testes in men.
Several additional functions of prokineticin 2 and its receptor have been discovered. These proteins help stimulate the movement of food through the intestine and are likely involved in the formation of new blood vessels (angiogenesis). They also play a role in coordinating daily (circadian) rhythms, such as the sleep-wake cycle and regular changes in body temperature. Prokineticin 2 and its receptor are active in a region of the brain called the suprachiasmatic nucleus (SCN), which acts as an internal clock that controls circadian rhythms.
Conditions referring to this gene or chromosome
Other names
BV8
KAL4
MIT1
PK2
PROK2_HUMAN
Protein Bv8 homolog
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Lectures complémentaires et références
- prokineticin 2; MedlinePlus, National Library of Medicine.
- Balasubramanian R, Crowley WF Jr. Isolated Gonadotropin-Releasing Hormone (GnRH) Deficiency. 2007 May 23 [updated 2022 May 12]. In: Adam MP, Bick S, Mirzaa GM, Wallace SE, Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2026. Available from http://www.ncbi.nlm.nih.gov/books/NBK1334/
- Cheng MY, Bullock CM, Li C, Lee AG, Bermak JC, Belluzzi J, Weaver DR, Leslie FM, Zhou QY. Prokineticin 2 transmits the behavioural circadian rhythm of the suprachiasmatic nucleus. Nature. 2002 May 23;417(6887):405-10. doi: 10.1038/417405a.
- Dode C, Rondard P. PROK2/PROKR2 Signaling and Kallmann Syndrome. Front Endocrinol (Lausanne). 2013 Apr 12;4:19. doi: 10.3389/fendo.2013.00019. eCollection 2013.
- Dode C, Teixeira L, Levilliers J, Fouveaut C, Bouchard P, Kottler ML, Lespinasse J, Lienhardt-Roussie A, Mathieu M, Moerman A, Morgan G, Murat A, Toublanc JE, Wolczynski S, Delpech M, Petit C, Young J, Hardelin JP. Kallmann syndrome: mutations in the genes encoding prokineticin-2 and prokineticin receptor-2. PLoS Genet. 2006 Oct 20;2(10):e175. doi: 10.1371/journal.pgen.0020175. Epub 2006 Sep 1.
- Moya-Plana A, Villanueva C, Laccourreye O, Bonfils P, de Roux N. PROKR2 and PROK2 mutations cause isolated congenital anosmia without gonadotropic deficiency. Eur J Endocrinol. 2012 Dec 10;168(1):31-7. doi: 10.1530/EJE-12-0578. Print 2013 Jan.
- Ng KL, Li JD, Cheng MY, Leslie FM, Lee AG, Zhou QY. Dependence of olfactory bulb neurogenesis on prokineticin 2 signaling. Science. 2005 Jun 24;308(5730):1923-7. doi: 10.1126/science.1112103.
- Pitteloud N, Zhang C, Pignatelli D, Li JD, Raivio T, Cole LW, Plummer L, Jacobson-Dickman EE, Mellon PL, Zhou QY, Crowley WF Jr. Loss-of-function mutation in the prokineticin 2 gene causes Kallmann syndrome and normosmic idiopathic hypogonadotropic hypogonadism. Proc Natl Acad Sci U S A. 2007 Oct 30;104(44):17447-52. doi: 10.1073/pnas.0707173104. Epub 2007 Oct 24.
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