An alternative splicing regulator previously implicated in calcium signaling in the heart ensures cell-type-specific mRNA processing of long neuronal mRNAs in the mouse brain.

A complex molecular machine, the spliceosome, ensures that the genetic information from the genome, after being transcribed into mRNA precursors, is correctly assembled into mature mRNA. Splicing is a ...

One idea has been that speckles are splicing factories. The splicing reaction would happen inside the speckle, and then the spliced product would leave. “What people found is that’s not what happens,” ...