FALSE about Cvtochrome-P450
(B) Peroxidase converts H202 at the expense of electron acceptors # Cytochrome-P450 are located on the smooth endoplasmic reticulum of cells throughout the body, but the highest concentrations are found in the liver (hepatocytes) and small intestine> Catalase is a hemoprotein containing four heme groups. In addition to possessing peroxidase activity, it is able to use one molecule of H2O2 as a substrate electron donor and another molecule of H202 as an oxidant or electron acceptor> Transfer of a single electron to 02 generates the potentially damaging superoxide anion free radical (02"-), the destructive effects of which are amplified by its giving rise to free radical chain reactions.
It is exclusively seen in ER of cells of liver and intestines
Peroxidase converts H2O2 at the expense of electron acceptors
Catalase use H2O2 as both electron acceptor and donor
Superoxide ion is CL most toxic form
Miscellaneous (Bio-Chemistry)