Reductive tricarboxylic pathway is used to fix carbon dioxide.
Reductive tricarboxylic pathway takes place in the mitochondria of plants and animals, while in prokaryotes this cycle occurs in the cytosol; It is done, then, in all aerobic organisms.
- Acetyl CoA is completely oxidized to CO2 and H2O in the presence of O2, through the cyclic enzymatic process known as the Krebs cycle, or tricarboxylic acid cycle.
- At each turn of the cycle, an acetyl CoA residue is oxidized to two CO2 molecules; 4 coenzymes 3 NAD + are simultaneously reduced to 3 NADH and 1 FAD to 1 FADH2.
Therefore, we can conclude that the reductive tricarboxylic pathway represents the common final pathway of aerobic oxidation of all substrates with CO2 production as waste.
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