The mnemonic
Maple syrup has three branches: Leu, Ile, Val
What each word stands for
- LeuLeucine
- IleIsoleucine
- ValValine
Why it matters clinically
Sweet-smelling urine, poor feeding and encephalopathy in neonates need early dietary restriction.
Where it stops being reliable
It tells you which amino acids, not the enzyme (branched-chain alpha-ketoacid dehydrogenase) or the cofactor thiamine.
Teaching aid, still awaiting independent review. Confirm facts in a standard source.