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Ribosome biogenesis is critical for eukaryotic cells and requires coordinated synthesis of the protein and rRNA moieties of the ribosome, which are therefore highly regulated. 5S ribosomal RNA, an essential component of the large ribosomal subunit, is transcribed by RNA polymerase III and specifically requires transcription factor IIIA (TFIIIA). To obtain insight into the regulation of 5S rRNA transcription,...
Transcription is known to be regulated by given chromatin states, distinguished as transcriptionally active euchromatin and silent heterochromatin. In plants, silencing in heterochromatin is associated with hypermethylation of DNA and specific covalent modifications of histone H3. Several lines of evidence have suggested that maintenance of DNA methylation patterns at CG sequences is responsible for...
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