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2. Silefrin, a sodefrin-like pheromone in the abdominal gland of the sword-tailed newt, Cynops ensicauda.

Author

Yamamoto K, Kawai Y, Hayashi T, Ohe Y, Hayashi H, Toyoda F, Kawahara G, Iwata T, and Kikuyama S

Subjects
Animals, Female, Male, Oligopeptides isolation & purification, Oligopeptides metabolism, Peptides isolation & purification, Peptides metabolism, Radioimmunoassay, Sex Attractants isolation & purification, Sex Attractants metabolism, Oligopeptides physiology, Peptides physiology, Salamandridae, Sex Attractants physiology
Abstract

Sodefrin-like female-attracting pheromone was purified from the abdominal glands of male sword-tailed newts, Cynops ensicauda, by gel-filtration chromatography and reversed-phase high-performance liquid chromatography. The final product comprises 10 amino acid residues with the sequence SILSKDAQLK which coincided with the sequence deduced from its precursor cDNA. This peptide was designated silefrin. The sequence of silefrin was different from that of sodefrin by two amino acid residues, with substitutions Leu for Pro and Gln for Leu at positions 3 and 8, respectively. Both native and synthetic silefrin exerted an equipotent activity in attracting conspecific females.

Published
2000
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