Sauvagine TFA, a 40-amino-acid neuropeptide from the skin of the frog, is a mammalian CRF agonist. Sauvagine TFA is effective at releasing ACTH from rat pituitary cells. Sauvagine TFA possesses a number of pharmacological actions on diuresis, the cardiovascular system and endocrine glands[1][2][3].
[1]. David A Lovejoy, et al. Evolution and phylogeny of the corticotropin-releasing factor (CRF) family of peptides: expansion and specialization in the vertebrates. J Chem Neuroanat. 2013 Dec;54:50-6.
[2]. P C Montecucchi, et al. Amino acid composition and sequence analysis of sauvagine, a new active peptide from the skin of Phyllomedusa sauvagei. Int J Pept Protein Res. 1981 Aug;18(2):113-20.
[3]. M H Perrin, et al. Corticotropin releasing factor receptors and their ligand family. Ann N Y Acad Sci. 1999 Oct 20;885:312-28.