Peptides From Australian Frogs. The Structures of the Dynastins From Limnodynastes salmini and Fletcherin From Limnodynastes fletcheri

Abstract

The dermal glandular extracts of the Australian frog Limnodynastes salmini contain a number of peptides of the dynastin family. The related species Limnodynastes fletcheri contains only one peptide in its glandular extract; this compound, which we have named fletcherin, is unusual amongst amphibian peptides in that the N-terminal group corresponds to Ala. The primary structures of the dynastins and fletcherin are described.