Transcription modulation by a rat nuclear scaffold protein, P130, and a rat highly repetitive DNA component or various types of animal and plant matrix or scaffold attachment regions.
The XmnI fragment, a highly repetitive DNA component, and animal and plant matrix or scaffold attachment region (MAR/SAR) were examined for similarity in interaction with nuclear scaffold. As the XmnI fragment bound a 130 kDa scaffold protein (P130) in vitro, various types of MAR/SAR fragments could bind 130 and 123 kDa scaffold proteins. The native XmnI and MAR/SAR fragments clearly augmented SV40 promoter-mediated luciferase gene transcription following transient transfection of recombinant plasmids into various types of recipient cells. In contrast, the XmnI fragment methylated at the cytosine base of the unique HindIII site, and a synthetic variant DNA deficient in base unpairing characteristic of MAR/SAR, could neither bind P130 nor augment this transcription. These two types of genomic regions appeared to have similar properties of interaction with nuclear scaffold, by which the activity of appropriately positioned promoter can be modulated.
Hibino
Y
Y
Department of Biochemistry, School of Medicine, Toyama Medical and Phamaceutical University, 2630 Sugitani, Toyama 930-0194, Japan.
Ohzeki
H
H
Sugano
N
N
Hiraga
K
K
D000818:Animals; D034961:Antigens, Nuclear; D002460:Cell Line; D006224:Cricetinae; D004247:DNA / Q000235:genetics*; D019175:DNA Methylation; D004268:DNA-Binding Proteins / Q000502:physiology*; D006801:Humans; D051379:Mice; D009687:Nuclear Proteins / Q000502:physiology*; D011401:Promoter Regions, Genetic; D011485:Protein Binding; D051381:Rats; D012091:Repetitive Sequences, Nucleic Acid; D013539:Simian virus 40 / Q000235:genetics; D014158:Transcription, Genetic / Q000502:physiology*
D034961:Antigens, Nuclear; D004268:DNA-Binding Proteins; D009687:Nuclear Proteins; D004247:DNA