proline—>GS(glutamate—> a-k), GSDH
arginine—>ornithine (urea cycle), Arginase
histidine—>glutamate(—>a-k)
threonine—>glycine—>serine—>pyruvate, threonine aldolase/SDH
cystine—>cysteine—>pyruvate, CR
hydroxyproline—>pyruvate, glyoxylate
tyrosine—>homogentisate—>fumarate, acetylacetate
lysine—>saccharopine—>2acetyl-coA
tryptophan—>2acetyl-coA
...