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.

Descriptor ID	D012322
MeSH Number(s)	D13.400.730 D13.444.735.640
Concept/Terms	RNA Precursors RNA Precursors Precursors, RNA RNA Precursor RNA Precursor Precursor, RNA Precursor RNA RNA, Precursor RNA, Transfer, Precursors RNA, Transfer, Precursors tRNA Precursor Precursor, tRNA Pre-tRNA Pre tRNA RNA, Ribosomal, Precursors RNA, Ribosomal, Precursors rRNA Precursor Precursor, rRNA Pre-rRNA Pre rRNA RNA, Small Nuclear, Precursors RNA, Small Nuclear, Precursors Pre-snRNA Pre snRNA snRNA Precursor Precursor, snRNA Primary RNA Transcript Primary RNA Transcript RNA Transcript, Primary Transcript, Primary RNA Primary Transcript, RNA RNA Primary Transcript Transcript, RNA Primary RNA, Messenger, Precursors RNA, Messenger, Precursors Pre-mRNA Pre mRNA mRNA Precursor Precursor, mRNA

Below are MeSH descriptors whose meaning is more general than "RNA Precursors".

Below are MeSH descriptors whose meaning is related to "RNA Precursors".

Below are MeSH descriptors whose meaning is more specific than "RNA Precursors".