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. Next, the snRNPs U2 and U4/U6 appear to ...

Its long-separated twin—the minor spliceosome, is much more scarce and remains enigmatic, even though its function is equally important. In this study, the researchers reveal the structure of ...

How does the cell select this information? A large molecular machine called the spliceosome continuously separates the coding and non-coding regions of our genes – and it's doing this even as ...