Transcriptional arrest within the first exon is a fast control mechanism in c-myc gene expression
- PMID: 3537956
- PMCID: PMC311862
- DOI: 10.1093/nar/14.21.8331
Transcriptional arrest within the first exon is a fast control mechanism in c-myc gene expression
Abstract
DMSO (dimethylsulfoxide), a potent inducer of granulocytic differentiation in HL60 cells, causes a rapid decrease of cytoplasmic steady state c-myc RNA. This decrease is regulated mainly at the level of transcript elongation. Elongation is blocked within the untranslated c-myc leader. Twelve hours after transcriptional shut off of c-myc, DNAase I hypersensitive site II was still detectable, indicating that closing of this site upstream of the gene does not correlate with reduction in the steady state level of c-myc RNA.
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