Feleucins: Novel Bombinin Precursor-Encoded Nonapeptide Amides from the Skin Secretion of Bombina variegata

Figure 2

Region of reverse phase HPLC chromatogram of Bombina variegata skin secretion with arrows indicating elution positions/retention times of fractions containing peptides with molecular masses coincident with those predicted for the novel bombinin (arrow number 1), feleucin-BV2 (arrow number 2), and feleucin-BV1 (arrow number 3). The 𝑦-axis represents the absorbance in milliabsorbance units (mA) at 𝜆 214 nm and the 𝑥-axis represents the retention time in minutes and seconds.