title: Isolation and partial characterization of basic fibroblast growth factor from bovine testis.
abstract: A basic fibroblast growth factor (FGF) has been purified to homogeneity from bovine testis, using ammonium sulfate precipitation of the crude extract followed by three chromatographic steps, involving cation-exchange, heparin-Sepharose, and reversed-phase HPLC. Gas-phase sequence analysis showed the amino-terminal amino acid sequence of the isolated polypeptide as His-Phe-Lys-Asp-Pro-Lys-Arg-Leu-Tyr-, which is identical to the amino-terminal of the (16-146) fragment of basic FGF previously characterized from corpus luteum, adrenal, and kidney. The purified FGF was shown to have the same biological activity as that of basic FGF (1-146). This finding suggests that basic FGF is present in testis and may act as a local regulator of testicular function. In addition, testicular FGF might play an important role in spermatogenesis and/or the development of testis.
mesh_terms: D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002417:Cattle; D005346:Fibroblast Growth Factors / Q000302:isolation & purification*; D008297:Male; D013737:Testis / Q000032:analysis*
chemical_list: D000596:Amino Acids; D005346:Fibroblast Growth Factors