Tom Cech discovered that this process could be autocatalytic, in the case of ribozymes.
In Drosophila, Tra promotes this process and Sxl ["S-X-L"] prevents it. Maturases are required for one form of this process to occur quickly. SR proteins bind to the ESE at its start. During this process, morpholinos can inhibit the imperfect binding of U2 to form the branch point at A. Alternative forms of it lead to the generation of different isoforms of fibronectin. Two transesterifications occur during this process, whose intermediate has a "lariat" shape. Tom Cech discovered that this process could be autocatalytic, in the case of ribozymes. It follows polyadenylation and addition of a 5 prime cap in posttranscriptional processing. For 10 points, name this process by which snRNPs ("Snurps") catalyze the removal of introns from mRNAs.
In Drosophila, Tra promotes this process and Sxl ["S-X-L"] prevents it.
mRNA splicing