Hydrogen peroxide enzymatic decomposition

Référence de la vidéo 11946057
Hydrogen peroxide enzymatic decomposition. Animation of the human catalase enzyme speeding up the decomposition of the inorganic chemical hydrogen peroxide. The animation starts with a molecular protein model of the enzyme, with the heme groups highlighted. These groups contain Fe2+ iron ions (labelled). A molecule of hydrogen peroxide (H2O2) binds to the heme group. Hydrogen peroxide consists of two atoms of oxygen (red) and two atoms of hydrogen (white). The animation shows bonds breaking and forming with the iron. For each hydrogen peroxide molecule, one water molecule forms. The removed oxygen is left forming an iron-oxygen complex, which breaks up to form an oxygen molecule (O2), leaving the enzyme unchanged. The catalase is not used up, and acts as a catalyst and increases the reaction rate which is slow at room temperature. For the animation without labels, see clip K005/4861.
Licence : Droits gérés
Crédit : Science Photo Library / RHYS LEWIS, AHS, DECD, UNISA
Model Release : Non requis
Durée : 45 Secondes
Aspect ratio : 16/9
Restrictions : -

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