Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P01185 (vasopressin)
 23,126 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Endopeptidase-2, the second endopeptidase in rat kidney brush border [Kenny & Ingram (1987) Biochem. J. 245, 515-524] has been further characterized in regard to its specificity and its contribution to the hydrolysis of peptides by microvillar membrane preparations. The peptide products were identified, after incubating luliberin, substance P, bradykinin and angiotensins I, II and III with the purified enzyme. The bonds hydrolysed were those involving a hydrophobic amino acid residue, but this residue could be located at either the P1 or P1' site. Luliberin was hydrolysed faster than other peptides tested, followed by substance P and bradykinin. Human alpha-atrial natriuretic peptide and the angiotensins were only slowly attacked. Oxytocin and [Arg8]vasopressin were not hydrolysed. No peptide fragments were detected on prolonged incubation with insulin, cytochrome c, ovalbumin and serum albumin. In comparison with pig endopeptidase-24.11 the rates for the susceptible peptides were, with the exception of luliberin, much lower for endopeptidase-2. Indeed, for bradykinin and substance P the ratio kcat./Km was two orders of magnitude lower. Since both endopeptidases are present in rat kidney microvilli, an assessment was made of the relative contributions to the hydrolysis of luliberin, bradykinin and substance P. Only for the first named was endopeptidase-2 the dominant enzyme; for bradykinin it made an equal, and for substance P a minor, contribution.
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PMID:The metabolism of neuropeptides. Hydrolysis of peptides by the phosphoramidon-insensitive rat kidney enzyme 'endopeptidase-2' and by rat microvillar membranes. 246 6

The most widely known oxytocic drug that can be used for the induction of labor or post-partum is oxytocin. In 1954, the american biochemist Vincent du Vigneaud was the first to describe an octapeptide amide with the hormonal activity of oxytocin. One year later, he was able to synthesize this octapeptide amide. In the same year he received the Nobel prize for his work in the field of biochemistry. A reprint of his brilliant publication is reproduced [with kind permission of the editors of the J Am Chem Soc]. With slight changes in structure, du Vigneaud was able to synthesize not only oxytocin, but also vasopressin. In our paper, however, we will focus on oxytocin only, as it is this synthetic hormone that has gained considerable importance in obstetrics. It is used for prevention of PPH as well as for induction of labour.
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PMID:History and use of oxytocics. 1113 19