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  • Title: Porcine guanylin and uroguanylin: cDNA sequences, deduced amino acid sequences, and biological activity of the chemically synthesized peptides.
    Author: Mägert HJ, Hill O, Zucht HD, Martin S, Meyer M, Forssmann WG, Adermann K.
    Journal: Biochem Biophys Res Commun; 1999 May 27; 259(1):141-8. PubMed ID: 10334930.
    Abstract:
    Guanylin and uroguanylin are structurally related intestinal peptide hormones which were purified from a limited number of mammals and are capable of activating the particulate guanylate cyclase-C. Although the biological functions of guanylin and uroguanylin are not yet clarified in detail, they are involved in the regulation of the intestinal water and electrolyte balance. In order to verify the general importance of this hormone system in mammals, we cloned the corresponding cDNAs from pig. Here, we present the nucleotide sequences and the deduced amino acid sequences representing porcine guanylin and uroguanylin. The expression patterns of the corresponding genes, as shown by Northern hybridization and RT-PCR analysis, resemble those of the human homologues. Further, we demonstrate the bioactivity of both porcine peptide hormones by inducing the intracellular cGMP production in human T84 cells and by ion transport experiments using porcine intestinal mucosa in the Ussing chamber.
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