Cis-acting elements are non-coding regions of DNA or RNA that regulate the expression of genes located on the same molecule. They play a crucial role in processes such as transcription and RNA processing by serving as binding sites for proteins, RNA, and other regulatory factors. Their positioning relative to the gene they regulate is vital, as they can influence transcriptional activity and ultimately the amount of mature RNA produced through mechanisms like capping, splicing, and polyadenylation.
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