Thiamine Pyrophosphate · The Acidic-Carbon Cofactor
unseel.com · thiazolium ylide  ·  C2 electron sink  ·  pyruvate → CO₂
Turnover ~10³/s
CO₂ released 0
Step
Thiazolium ring (N⁺ / S)
Aminopyrimidine + PPi tail
Pyruvate substrate
C2 ylide / hydroxyethyl-TPP
CO₂ leaving group
Unseel.com · Thiamine Pyrophosphate (TPP)