Citric Acid Cycle

The citric acid cycle (tricarboxylic acid cycle) is a biochemical process that occurs in the mitochondria of cells. It is one of the stages of the Krebs cycle and plays an important role in cellular energy metabolism.

In the citric acid cycle, acetyl-CoA is oxidized to form carbon dioxide and water. This process occurs with the participation of enzymes such as malate dehydrogenase, isocitrate dehydrogenase and alpha-ketoglutarate dehydrogenase.

Acetyl-CoA is one of the main products of carbohydrate and fat metabolism. It is formed as a result of the breakdown of these substances in the Krebs cycle. Acetyl-CoA then passes through the citric acid cycle, where it is oxidized to carbon dioxide and water, releasing energy.

The citric acid cycle is an important stage in cellular energy metabolism, as it provides cells with energy in the form of ATP. In addition, this cycle is involved in the synthesis of some important compounds such as fatty acids and amino acids.

Thus, the citric acid cycle plays a key role in the energy metabolism of cells and is an important link in the overall metabolic cycle in the body.