mRNA processing acts as a form of post-transcriptional regulation, which mostly happens in eukaryotes. 3′ cleavage/polyadenylation and 5’ capping increase overall RNA stability, and the presence of 5’ cap allows ribosome binding for translation. RNA splicing allows the expression of various protein variants from the same gene.
Specific examples include:
* SR proteins
* Ribonucleoprotein
** hnRNP
** snRNP