The Structures of the Frenatin Peptides from the Skin Secretion of the Giant Tree Frog Litoria Infrafrenata
- 1 March 1996
- journal article
- research article
- Published by Wiley in Journal of Peptide Science
- Vol. 2 (2) , 117-124
- https://doi.org/10.1002/psc.60
Abstract
The granular dorsal glands of the giant tree frog Litoria infrafrenata contain five peptides including caerulein (a known neuropeptide), and four new peptides named frenatins 1 (MH+ = 1140 Da), 2 (1423), 3 (2180) and 4 (2493). The amino acid sequences of the frenatins are detailed: their structures do not correspond to those of peptides isolated from other amphibians or animals. Frenatin 3, Gly-Leu-Met-Ser-Val-Leu-Gly-His-Ala-Val-Gly-Asn-Val-Leu-Gly- Gly-Leu-Phe-Lys-Pro-Lys-Ser-(OH), has wide spectrum antimicrobial properties.Keywords
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