Antimicrobial peptides from the skin of the Asian frog, Odorrana jingdongensis: De novo sequencing and analysis of tandem mass spectrometry data

► Eight antimicrobial peptides were identified from skin of Odorrana jingdongensis. ► Exact mass measurements were devised to discriminate K/Q amino acid residue. ► Cleavages within the intramolecular disulfide loop were observed high frequency. ► The cleavage pathways are significantly different from those reported previously.