title: Box I and II motif from myelin basic protein gene promoter binds to nuclear proteins from rodent brain.
abstract: The box I and II motif located within the promoter of the myelin basic protein gene contains a simian virus 40 T-antigen-binding site, a MyoD/E2a-binding site, and a glucocorticoid receptor-binding site. We have found proteins within nuclear extracts from adult mouse brain, rat embryonic cerebral cortex in culture, and a mouse oligodendrocyte-like cell line that bind to a 32P-labeled synthetic DNA fragment containing the sequences of the box I and II motif. Three major complexes (A, B, and C) were seen in gel-shift assays. Only complexes A and B were competed out by the unlabeled box I and II fragment or by another synthetic DNA fragment that also contains sequences similar to a glucocorticoid receptor-binding site. Therefore, complexes A and B were thought to be specific. The expression pattern of the proteins responsible for the formation of these complexes was also assessed during development in mouse brain.
authors.affiliation: Department of Orthopaedic Surgery, Harvard Medical School, Boston, MA 02115.
authors.forename: K S
authors.initials: KS
authors.lastname: Kimbro
authors.forename: P A
authors.initials: PA
authors.lastname: Rosenberg
authors.forename: R A
authors.initials: RA
authors.lastname: Saavedra
mesh_terms: D000818:Animals; D001483:Base Sequence; D001921:Brain / Q000378:metabolism*; D002460:Cell Line; D004247:DNA / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000378:metabolism*; D005260:Female; D005786:Gene Expression Regulation / Q000187:drug effects; D005938:Glucocorticoids / Q000494:pharmacology; D051379:Mice; D008969:Molecular Sequence Data; D004676:Myelin Basic Protein / Q000235:genetics*; D009687:Nuclear Proteins / Q000378:metabolism*; D011401:Promoter Regions, Genetic; D051381:Rats; D012680:Sensitivity and Specificity
chemical_list: D004268:DNA-Binding Proteins; D005938:Glucocorticoids; D004676:Myelin Basic Protein; D009687:Nuclear Proteins; D004247:DNA