WWamide-1 is a novel neuropeptide isolated from ganglia of the African giant snail, Achatina fulica. This biologically active heptapeptide amide with a Trp residue at both the N- and C-termini, displayed an inhibitory activity on a central neuron of the snail, exhibited peripherally modulatory effects on muscular contractions of not only the gut and other tissues of the snail but also certain tissues of other molluscs. Minakata, H; et al., FEBS Lett., 323, 104 (1993).
M.W.: 946.16
