What Is Intermediary Metabolism?

Refers to the various reactions from the beginning of substance A to the final product X in the process of substance metabolism. In the reactions A B C D X, B C, C D, etc. are all intermediate metabolisms. Intermediate metabolism is not the shortest path of A X, most of which are long series of roundabout reaction series. Because other substances or various conditions in the cell can affect the enzymes in the intermediate stage, it may regulate the consumption of A or the speed of X production, and it can also be converted into another pathway. Intermediate metabolism needs to supply energy during the synthesis reaction, and energy (such as ATP generated by glycolysis) is released by the alienation reaction, so the connection and unification of material metabolism and energy metabolism are very important. As a research tool, tracers can be effectively used.

Intermediate metabolism

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Means

Intermediate metabolism is the main content of the metabolic process experienced by the body after it has absorbed nutrients or digested products. It is essentially the sum of a series of chemical or biochemical reactions that the nutrient components or digestive products undergo in this metabolic stage. Many intermediate metabolic reactions require the participation of corresponding enzymes. The reaction process also mostly includes multiple steps, and in each step, corresponding metabolic intermediates are produced, referred to as metabolites.

For higher animals, including us humans, we know that only the physical changes and chemical decomposition of food or nutrients in the digestive tract system cannot provide energy to the body or even the "raw materials" required by the body composition. The exo-metabolism of nutrients is just a conversion of nutrient components into prerequisite substances that can be further reacted or utilized, as if it is a preparation for the normal progress of intermediate metabolism.

Intermediate metabolism is also called intracellular metabolism. During intermediate metabolism, the body uses the various reactions to obtain energy from nutrients or digestive products, and the "raw materials" required for the body's composition. The entire intermediate metabolism can be divided into two processes, namely catabolism and anabolic metabolism, where catabolism mainly completes the work of obtaining energy and "raw materials", while anabolic metabolism mainly completes the task of using energy storage and "raw materials" to form body constituents .

In catabolic and anabolic processes, a series of enzyme-catalyzed reactions will be included. This biochemical enzyme reaction can not only ensure the normal progress of the body's metabolism, but also very conducive to the release and acceptance of energy during the reaction.