title: A novel Xenopus laevis SRY-related gene, xSox33.
abstract: The sex-determining region Y (SRY) gene and its related Sox genes encode transcriptional regulatory factors. In this study, we isolated and sequenced a novel Sox cDNA from African clawed frog (Xenopus laevis). The Sox gene was named xSox33. xSox33 was revealed to encode 244 amino acids. Reverse transcription-polymerase chain reaction (RT-PCR) showed that xSox33 was expressed at very low levels in some frog tissues including lung, ovary, skeletal muscle, testis, brain and heart. Its embryonic expression was also studied by RT-PCR. After the mid-blastula transition, the zygotic expression was initiated during gastrulation and the level was elevated as the embryogenesis proceeded. Electrophoretic mobility shift assay (EMSA) indicated that a recombinant xSox33 polypeptide was capable of binding to the nucleotide sequence AACAAT.
authors.affiliation: Department of Anatomy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Hagiuda
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Hiraoka
authors.forename: Masanori
authors.initials: M
authors.lastname: Hasegawa
authors.forename: Motoyuki
authors.initials: M
authors.lastname: Ogawa
authors.forename: Sadakazu
authors.initials: S
authors.lastname: Aiso
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D018076:DNA, Complementary / Q000737:chemistry / Q000302:isolation & purification; D004268:DNA-Binding Proteins / Q000235:genetics; D024202:Electrophoretic Mobility Shift Assay; D024282:Genes, sry; D006609:High Mobility Group Proteins / Q000235:genetics*; D008969:Molecular Sequence Data; D020133:Reverse Transcriptase Polymerase Chain Reaction; D055747:SOX Transcription Factors; D016415:Sequence Alignment; D014157:Transcription Factors / Q000235:genetics*; D029867:Xenopus Proteins / Q000235:genetics*; D014982:Xenopus laevis / Q000196:embryology / Q000235:genetics*
chemical_list: D018076:DNA, Complementary; D004268:DNA-Binding Proteins; D006609:High Mobility Group Proteins; D055747:SOX Transcription Factors; C479043:SOX33 protein, Xenopus; D014157:Transcription Factors; D029867:Xenopus Proteins