Abstract:
:The nuclear-mitochondrial stringent response was examined in isonuclear rho+, 21S rRNA-containing rho-, and rho o strains of S. cerevisiae. By 30 min after nutritional downshift, nuclear rDNA transcription falls to 15% of control levels congruently in all strains, as assayed via whole-cell RNA or by hybrid selection of specific double-labeled transcripts. Both in vivo and in vitro, the mitochondrial stringent response is identical between the rho- strain and its parental rho+ strain, and in both, the kinetics and magnitude of the organellar response mirror those of the nuclear response. The data show that mitochondrial transcription and protein synthesis are not required for stringent regulation of either nuclear or mitochondrial rDNA transcription.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
McEntee CM,Cantwell R,Thomas LC,Hudson APdoi
10.1016/0006-291x(89)91727-0subject
Has Abstractpub_date
1989-10-16 00:00:00pages
362-9issue
1eissn
0006-291Xissn
1090-2104pii
0006-291X(89)91727-0journal_volume
164pub_type
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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更新日期:1985-11-15 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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