E Acetyl-CoA CHc oxidized lipoyllysine TPP FAD TPP FAD cO E NADH+H+ O HS FAD TPPE1 Ez NAD oxidized Hipoyllysine reduced lipoyllysine oA-SH TPPE EFAD用 HS HA E E CHa SCoA TPP FAD AcetyI-CoAAcetyl-CoA