This family of antibacterialpeptides are secreted from the granular dorsal glands of Litoria aurea (Green and golden bell frog), Litoria raniformis (Southern bell frog), Litoria citropa (Australian blue mountains tree frog) and frogs from genusUperoleia. Amongst the more active of these are aurein 1.2,[1] aurein 2.2 and aurein 3.1; caerin 1.1, maculatin 1.1, uperin 3.6;[2] citropin 1.1, citropin 1.2, citropin 1.3 and a minor peptide are wide-spectrum antibacterial peptides.[3][4]
^Rozek T, Wegener KL, Bowie JH, Olver IN, Carver JA, Wallace JC, Tyler MJ (September 2000). "The antibiotic and anticancer active aurein peptides from the Australian Bell Frogs Litoria aurea and Litoria raniformis the solution structure of aurein 1.2 >". Eur. J. Biochem. 267 (17): 5330–41. doi:10.1046/j.1432-1327.2000.01536.x. PMID10951191.