Nucleic Acid Precursors
| Medical Definition: |
Use for nucleic acid precursors in general or for which there is no specific heading. |
| Guide Notes: |
IM; coord with DNA or RNA or specific (IM); /drug eff /ultrastruct permitted |
| Previously Indexed: |
Nucleic Acids (1968-1974) |
Nucleic Acid Precursors Categories.
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RNA Precursors - 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. |
Nucleic Acid Precursors Medical Definitions and Terms
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