title: Participation of transcription elongation factor XSII-K1 in mesoderm-derived tissue development in Xenopus laevis.
abstract: We isolated a cDNA clone for a novel member of the S-II family of transcription elongation factors from Xenopus laevis. This S-II, named XSII-K1, is assumed to be the Xenopus homologue of mouse SII-K1 that we reported previously (Taira, Y., Kubo, T., and Natori, S. (1998) Genes Cells 3, 289-296). Expression of the XSII-K1 gene was found to be restricted to mesoderm-derived tissues such as liver, kidney, and skeletal muscle. Contrary to the general S-II gene, expression of the XSII-K1 gene was not detected in embryos at stages earlier than 11. The animal cap assay revealed that activin A, but not basic fibroblast growth factor, induced expression of the XSII-K1 gene and that it participated in the expression of mesoderm-specific genes such as Xbra and Xalpha-actin. This is the first demonstration that the regulation at the level of transcription elongation is included in the development of mesoderm-derived tissues.
authors.affiliation: Graduate School of Pharmaceutical Sciences, University of Tokyo, Bunkyo-ku, Tokyo, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Taira
authors.forename: T
authors.initials: T
authors.lastname: Kubo
authors.forename: S
authors.initials: S
authors.lastname: Natori
mesh_terms: D000199:Actins / Q000235:genetics; D028341:Activins; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D004625:Embryo, Nonmammalian / Q000378:metabolism; D016222:Fibroblast Growth Factor 2 / Q000494:pharmacology; D020869:Gene Expression Profiling; D018507:Gene Expression Regulation, Developmental / Q000187:drug effects; D005819:Genetic Markers; D017403:In Situ Hybridization; D007265:Inhibins / Q000494:pharmacology; D008648:Mesoderm / Q000187:drug effects / Q000378:metabolism*; D008969:Molecular Sequence Data; D010445:Peptide Elongation Factors / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D017386:Sequence Homology, Amino Acid; D020825:T-Box Domain Proteins / Q000235:genetics; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D035165:Transcription Factors, General; D014158:Transcription, Genetic / Q000187:drug effects; D035602:Transcriptional Elongation Factors; D029867:Xenopus Proteins; D014982:Xenopus laevis / Q000196:embryology* / Q000378:metabolism
chemical_list: D000199:Actins; D005819:Genetic Markers; D010445:Peptide Elongation Factors; D012333:RNA, Messenger; D020825:T-Box Domain Proteins; C116765:TBXT protein, Xenopus; D014157:Transcription Factors; D035165:Transcription Factors, General; D035602:Transcriptional Elongation Factors; C415466:XSII-K1 protein, Xenopus; D029867:Xenopus Proteins; C018648:transcription factor S-II; D016222:Fibroblast Growth Factor 2; D028341:Activins; D007265:Inhibins