RNA modifications refer to the chemical changes made to RNA molecules after they are synthesized. These modifications can affect the stability, translation, and overall function of the RNA. Common types of modifications include methylation, pseudouridylation, and editing, which can enhance the RNA's ability to perform its roles in the cell. These modifications play crucial roles in various biological processes, such as gene expression and regulation. For instance, the addition of a methyl group can protect RNA from degradation, while other modifications can influence how RNA interacts with proteins and other molecules. Understanding these modifications is essential for studying cellular functions and diseases.