RNA Post-Transcriptional Modification During Gene Expression
The process of producing messenger RNA (mRNA) in eukaryotic cells requires post-transcriptional modification. The initial precursor mRNA must be converted into mature mRNA, which involves specific splicing and occurs prior to protein synthesis.
This process is vital for the correct translation of the genomes of eukaryotes because the primary RNA transcript that is produced by the initial transcription contains both
, which are either coding sections of the transcript or are important sequences involved in translation, and
, which are the non-coding sections of the primary RNA transcript.