Relaxin-like Gonad-Stimulating Peptides in Asteroidea
Starfish relaxin-like gonad-stimulating peptide (RGP) is the first identified peptide hormone with gonadotropin-like activity in invertebrates.RGP Tank is a heterodimeric peptide, comprising A and B chains with disulfide cross-linkages.Although RGP had been named a gonad-stimulating substance (GSS), the purified peptide is a member of relaxin-type