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RNA Precursors
Pre-mRNA; Pre-rRNA; Pre-snRNA; Pre-tRNA; Primary Transcript, RNA; RNA Precursor; mRNA Precursor; rRNA Precursor; snRNA Precursor; tRNA Precursor; Pre mRNA; Pre rRNA; Pre snRNA; Pre tRNA; Precursor, RNA; Precursor, mRNA; Precursor, rRNA; Precursor, snRNA
RNA transcripts of the DNA that are in some unfinished stage of post-transcriptional processing (RNA PROCESSING, POST-TRANSCRIPTIONAL) required for function. RNA precursors may undergo several steps of RNA SPLICING during which the phosphodiester bonds at exon-intron boundaries are cleaved and the introns are excised. Consequently a new bond is formed between the ends of the exons. Resulting mature RNAs can then be used; for example, mature mRNA (RNA, MESSENGER) is used as a template for protein production.