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The central dogma of biology, until not long ago, held that genetic information stored on DNA molecules was translated into the final protein products through RNA as intermediate molecules. Then, an additional level of complexity in the regulation of genome expression was added, implicating new classes of RNA molecules called non-coding RNA (ncRNA). These ncRNA are also often referred to as functional...
Genome analysis has identified a number of putative non-protein-coding transcripts that do not contain ORFs longer than 100 codons. Although evidence strongly suggests that non-coding RNAs are important in a variety of biological phenomena, the discovery of small peptide-coding mRNAs confirms that some transcripts that have been assumed to be non-coding actually have coding potential. Their abundance...
It is now evident that the transcriptional output of the genome is much more complex than estimates based on the number of protein-coding genes, and that non-coding RNA widely increase the source of regulatory molecules, a role previously ascribed to proteins. Furthermore, the recent characterization of bifunctional RNA, i.e. RNA for which both coding capacity and activity as functional RNA have been...
Although control of cellular function has classically been considered the responsibility of proteins, research over the last decade has elucidated many roles for RNA in regulation of not only the proteins that control cellular functions but also for the cellular functions themselves. In parallel to this advancement in knowledge about the regulatory roles of RNA there has been an explosion of knowledge...
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