snoRNA (small nucleolar RNA)

Small nucleolar RNA (snoRNA) are a type of RNA molecules located in the nucleolus, a part of the cell's nucleus. They play a crucial role in the processing and modification of other RNA molecules, especially ribosomal RNAs (rRNAs), which are essential for protein synthesis. SnoRNAs guide chemical modifications like methylation and pseudouridylation on rRNAs, ensuring these molecules fold correctly and function properly. In short, snoRNAs act as molecular guides or editors, helping produce functional components needed for the cell to make proteins efficiently.