In the context of catalysis, introns can be considered through their role in the process of RNA splicing. RNA splicing is a biochemical reaction catalyzed by the spliceosome, a complex of small nuclear ribonucleoproteins (snRNPs) and other proteins. The catalytic activity of the spliceosome ensures that introns are precisely removed from the pre-mRNA, allowing the exons to be joined together to form a mature mRNA molecule.
