Description
Uperolein is a physalaemin-like endecapeptide that acts as a tachykinin, binding the neurokinin-1 (NK1) receptor. Uperolein induces spasmogenic activity in smooth muscle cells in the stomach. Uperolein was initially found in the skin of species of Uperoleia and Taudactylus frogs.
References
Dike A, Cowsik SM. Solution structure of amphibian tachykinin Uperolein bound to DPC micelles. J Struct Biol. 2006 Dec;156(3):442-52. PMID: 16979908.
Bertaccini G, Coruzzi G. Action of some natural peptides on the stomach of the anaesthetized rat. Naunyn Schmiedebergs Arch Pharmacol. 1977 Jun;298(2):163-6. PMID: 882154.
Erspamer V, Negri L, Erspamer GF, et al. Uperolein and other active peptides in the skin of the Australian leptodactylid frogs Uperoleia and Taudactylus. Naunyn Schmiedebergs Arch Pharmacol. 1975;289(1):41-54. PMID: 1186916.