LymnaDFamides, a new family of neuropeptides from the pond snail, Lymnaea stagnalis. Clue to cholecystokinin immunoreactivity in invertebrates?

Abstract

Five tridecapeptides have been identified from the central nervous system of the pond snail, Lymnaea stagnalis. The sequences are Pro-Xaa-Asp-Arg-Ile-Ser-Yaa-Ser-Ala-Phe-Ser-Asp-Phe. NH2, where Xaa is either Tyr or Phe and Yaa either Asn, Ser or Gly. The peptides are named lymnaDFamides to acknowledge identity with the C-terminal dipeptide of the mammalian… (More)

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