Kassinin is a peptide
Peptides are short polymers of amino acid monomers linked by peptide bonds. They are distinguished from proteins on the basis of size, typically containing less than 50 monomer units. The shortest peptides are dipeptides, consisting of two amino acids joined by a single peptide bond...

 derived from the Kassina
Kassina are a genus of hyperoliid frogs, commonly referred to as running frogs. They are found throughout sub-Saharan Africa. They are characterized by preferring a distinctive "walking" with the back legs instead of the more traditional frog hopping .-Species:There are 14 recognized species in the...

Frogs are amphibians in the order Anura , formerly referred to as Salientia . Most frogs are characterized by a short body, webbed digits , protruding eyes and the absence of a tail...

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.