This step occurs by transesterification; in this case, an OH group at the ... mechanisms of RNA splicing, splicing itself must be quite ancient. Proponents of the "intron-early" theory suggest ...

What's the difference between mRNA and pre-mRNA? It's all about splicing of introns. See how one RNA sequence can exist in nearly 40,000 different forms.

Alternative splicing promotes adaptation to environmental changes; in fungi, the most common example of alternative splicing is intron retention. To explore the relationship between splicing and ...