All of the following amino acids forms acetyl CoA Pyruvate Dehydrogenase EXCEPT: (A) Glycine, (B) Hydroxyproline, (C) Tyrosine, (D) Alanine
Answer is C. Six amino acids form pyruvate during catabolism. They are Glycine, Alanine, Serine, Threonine, Cysteine and Hydroxy-Proline (see fig).