Carbohydrates: anabolism

The anabolism of carbohydrates
The sugars in the body can come from many sources, but it is necessary that each of these sources can form glucose, fructose or ribose, which are the only sugars that can be used in catabolism. These are food sources or endogenous. Food sources provide glucose, fructose, galactose and pentose. Glucose crossing the intestinal barrier after phosphorylation circulates freely under and follow the anabolic pathway or lagoon storage, formation of liver glycogen, muscle and lipid reserves or the catabolic pathway leading to carbon dioxide and water by the Krebs cycle

In the liver, fructose can enter the cycle or be catabolized glucose independently to a C3 sugar. Galactose binds to glucose by a complex enzymatic mechanism mainly through a transferase children whose absence is responsible for a particular condition. The endogenous sources of carbohydrates are three may be formed from the proteins, lipids and also from the products of carbohydrate catabolism itself.

The several modes aeroanaerobio catabolism of the sugars are indeed reversible and may reverse the process and re-form a molecule of glucose or glycogen. The possibility of reversal of the reactions were stopped at the level of pyruvic acid. In the new synthesis of this acid over its predecessor is verified by an indirect route. This synthesis uses energy and involves the disappearance of a quantity of raw material that will produce the necessary energy. Lipids are a form of carbohydrate reserve if such a step both in one direction or another thanks mainly to coenzyme A. Protids are divided into two groups. 1 .- protids cetoformadores acting as fatty acids and 2 .- protids glucoformadores that bind to sugar metabolism in various ways.

*Automatic Translation