title: Transcription factor IIIA (TFIIIA): an update.
abstract: Xenopus transcription factor, termed TFIIIA, is the first eukaryotic transcription factor purified to homogeneity and one of the most extensively characterized polymerase III gene factors at the levels both of the protein and its gene. It is an abundant protein in oocytes and is specifically required for the 5S RNA gene transcription. It promotes the formation of a stable transcription complex by first binding to the internal control region of the 5S RNA gene through its zinc finger motifs. It contains two structural domains and associates with 5S RNA to form 7S ribonucleoprotein particles in oocytes. Its expression is developmentally controlled at the level of transcription and translation. It participates in the assembly of active chromatin templates and, at least in part, is responsible for the differential expression of two kinds of 5S RNA genes in Xenopus.
authors.affiliation: Eye Research Institute, Oakland University, Rochester, Michigan 48309.
authors.forename: B S
authors.initials: BS
authors.lastname: Shastry
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001665:Binding Sites; D004247:DNA / Q000378:metabolism; D005786:Gene Expression Regulation; D008969:Molecular Sequence Data; D012341:RNA, Ribosomal, 5S / Q000235:genetics / Q000378:metabolism; D035582:Transcription Factor TFIIIA; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics / Q000502:physiology; D014981:Xenopus
chemical_list: D012341:RNA, Ribosomal, 5S; D035582:Transcription Factor TFIIIA; D014157:Transcription Factors; D004247:DNA