In the first step, the 2'-OH of an adenosine in the intron (the branch site A) attacks the phosphodiester bond at the 5' splice site to release the upstream exon and form a branched or lariat ...

We also examined the frequency of exon skipping and length variation by ... Given the incomplete EST and intron sequence coverage in the databases, we anticipate that the real frequency of ...

This spliceosome is made up of variety of protein and RNA components, and for each splicing process, it is reassembled at the sites where an exon joins an intron and the intron in turn connects to ...