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  • Title: Two multigene families for marsupial neurohypophysial hormones? Identification of oxytocin, mesotocin, lysipressin and arginine vasopressin in the North American opossum (Didelphis virginiana).
    Author: Chauvet J, Hurpet D, Michel G, Chauvet MT, Acher R.
    Journal: Biochem Biophys Res Commun; 1984 Aug 30; 123(1):306-11. PubMed ID: 6477584.
    Abstract:
    Oxytocin, mesotocin ([Ile8]-oxytocin), lysipressin ([Lys8]-vasopressin) and arginine vasopressin have been identified in the North American opossum (Didelphis virginiana) by amino acid composition and high pressure liquid chromatography. The same peptides with the exception of mesotocin have previously been found in two South American opossums (Didelphis marsupialis and Philander opossum). Although a dual heterozygocity could also explain the simultaneous presence of oxytocin/mesotocin on one hand, lysipressin/arginine vasopressin on the other, it is assumed, from the results obtained with individual glands of Australian and South American marsupials, that distinct genes encode for the four peptides.
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