text: Yo, listen up, I got some knowledge to drop,
  About Adenosine triphosphate, ATP won't stop.
  It triggers the release of catecholamines, you see,
  From adrenal medulla's chromaffin granules, it's key.
  
  When ATP does its thing, enzymes come into play,
  In the granule membrane, hydrolyzing it, they say.
  Phosphate is liberated, from ATP it's freed,
  Some of it transfers to proteins and lipids, indeed.
  
  Diphosphatidylinositol, that's the lipid's name,
  Formed from ATP and monophosphatidylinositol, no shame.
  The enzyme phosphatidylinositol kinase, it acts,
  Using the phospholipid as its substrate, that's a fact.
  
  Both the enzyme and substrate, they're in the membrane's crew,
  Just like dopamine beta-hydroxylase, they do.
  Mg(2 plus) is needed for diphosphatidylinositol's birth,
  Mn(2 plus) gives it a boost, enhancing its worth.
  
  N-ethylmaleimide tries to inhibit the reaction,
  And pH 5, that's the optimal satisfaction.
  In chromaffin granules "in situ," it's shown,
  When acetylcholine stimulates, the synthesis is known.