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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Teleost isotocin receptor: structure, functional expression, mRNA distribution and phylogeny.

A cDNA encoding a receptor for the oxytocin-related peptide isotocin has been identified by screening a lambda gt11 library constructed from poly(A)+ RNA of the hypothalamic region of the teleost Catostomus commersoni. The probe used was obtained by PCR amplification of white sucker genomic DNA using degenerate primers based on conserved sequences in the mammalian receptor counterparts. The full-length cDNA specifies a polypeptide of 390 amino acid residues that displays the typical hydrophobicity profile of a seven transmembrane domain receptor and which exhibits greatest similarity to mammalian oxytocin receptors. Oocytes that express the cloned receptor respond to the application of isotocin by an induction of membrane chloride currents indicating that it is coupled to the inositol phosphate/calcium pathway. The isotocin receptor (ITR) can also be activated by vasotocin, mesotocin, oxytocin and Arg-vasopressin, although these have lower potencies than isotocin. ITR-encoding mRNA has been detected in brain, intestine, bladder, skeletal muscle, lateral line, gills and kidney indicating that this receptor may mediate a variety of physiological functions.[1]

References

  1. Teleost isotocin receptor: structure, functional expression, mRNA distribution and phylogeny. Hausmann, H., Meyerhof, W., Zwiers, H., Lederis, K., Richter, D. FEBS Lett. (1995) [Pubmed]
 
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