title: [Heterogeneity of pituitary gonadotropin from sturgeons].
abstract: A highly purified preparation of the pituitary gonadotropin of a chondrostean fish, sevryuga (Acipenser stellatus Pall.) has been shown to be homogeneous by criteria of molecular weight, sedimentation coefficient and by N-terminal amino acid analysis. On the contrary, polyacrylamide gel electrophoresis and isoelectric fucusing have revealed a marked heterogeneity of the hormone preparation. The determination of gonadotropic activity (in vitro amphibian oocyte maturation test) has shown the similar specific activities of the differently charged hormone molecules.
mesh_terms: D000818:Animals; D001681:Biological Assay; D005260:Female; D005399:Fishes; D006065:Gonadotropins, Pituitary / Q000302:isolation & purification* / Q000494:pharmacology; D008970:Molecular Weight; D009865:Oocytes / Q000187:drug effects; D010902:Pituitary Gland / Q000032:analysis*
chemical_list: D006065:Gonadotropins, Pituitary
vernacular_title: Analiz geterogennosti ginadotropnogo gormona gipofiza sevriugi.