Glycogen
The glycogen is a complex sugar. It consists of a chain of dependant glucose in α (1-4). It is connected α (1-6) to all the 8 to 12 residues and is used by the animal for to store energy as well as the Amidon at the vegetable .
It is a Polymère Glucose of chemical formula
The Foie carries out the Glycogénolyse (hydrolysis of glycogen) “to reform” Glucose starting from its glycogen reserves. If those have suddenly become exhausted (at the end of 12 hours of fast at the human being), the liver then uses Protéines or lactate (resulting from the Muscle S, inter alia) to reform Glucose, by Néoglucogénèse.
On also finds glycogen in the Muscle S where it is stored then degraded in glucose at the time of great muscular efforts. Contrary to the case of the liver, the glucose thus produced by the muscular cell can be used only by this same cell.
Le storage of sugar is carried out thanks to a Enzyme: the Glycogénosynthétase.
The production of glycogen in the organization is stimulated by the Insuline, only Hormone hypoglycémiante and the degradation of glycogen in glucose is stimulated by the Glucagon and the Adrénaline.
The glycogen is a molecule of the family of the glucids (macromolecule) consisted of many units of glucose and which constitutes a reserve of glucose stored in the liver and the muscles. This glucose is released thanks to small enzymes which cuts out glycogen to release it in blood.
See too
Simple: Glycogen
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