The sequence of porcine chromogranin A messenger RNA demonstrates chromogranin A can serve as the precursor for the biologically active hormone, pancreastatin.

Autor: Iacangelo AL; Unit on Molecular and Cellular Neurobiology, NIMH, Bethesda, MD 20892., Fischer-Colbrie R, Koller KJ, Brownstein MJ, Eiden LE
Jazyk: angličtina
Zdroj: Endocrinology [Endocrinology] 1988 May; Vol. 122 (5), pp. 2339-41.
DOI: 10.1210/endo-122-5-2339
Abstrakt: Specific oligonucleotide priming of double-stranded DNA has been employed to sequence a porcine chromogranin A adrenomedullary cDNA. Porcine chromogranin A is more than 80% identical to human, bovine, and rat chromogranin A at its deduced N- and C-termini. A 49-amino acid region of the porcine molecule is 59-71% homologous to corresponding areas of rat, bovine, and human chromogranin A, and identical to the amino acid sequence of porcine pancreastatin. The sequence is preceded by an arginine at the N-terminus and followed by a GKR sequence at the C-terminus. Thus, porcine chromogranin A can serve as the precursor for pancreastatin, a polypeptide capable of inhibiting insulin release from the endocrine pancreas and acid secretion from parietal cells of the gut.
Databáze: MEDLINE