text: Yo, check it out, here's the deal,
  mRNA transcribed, gotta keep it real.
  RNA cleavage, at the 3' end,
  Polyadenylation, that's the trend.
  
  On its journey to be translated,
  Regulation's tight, can't be understated.
  Cap-binding proteins, miRNAs in the mix,
  RNA binding proteins, PABPs, no tricks.
  
  Nuclear or cytoplasmic, that's the debate,
  Exoribonucleases, they can't wait,
  To access the poly(A) tail, remove it fast,
  It's crucial for stability, translation's blast.
  
  In this chapter, we lay it down,
  Cleavage, polyadenylation renowned.
  Deadenylation, another key phase,
  Biochemical assays, we blaze.
  
  Study the activity, enzymes in action,
  Understanding the mRNA's traction.
  Protocols provided, investigate with zest,
  Poly(A) length, put it to the test.
  
  These assays matter, don't you see,
  Poly(A) tail length controls gene expression, see?
  The importance is dynamic, can't deny,
  Controlling gene expression, reach the sky.