Notes on Biology experiment
There are a whole range of enzymes that catalyse the breakdown of hydrogen peroxide, occurring in both microbial, plant and animal cells. According to the International Union of Biochemistry these are in group 1.11 of "peroxidase" enzymes as "acting on peroxide as acceptor". The most well-known enzyme that breaks down hydrogen peroxide is called catalase or the full name is hydrogen-peroxide: hydrogen peroxide oxidoreductase (EC number 1.11.1.6). Catalase breaks hydrogen peroxide down into oxygen and water. The reaction is 2 H2O2 (+enzyme) = O2+ 2 H2O(+enzyme)
Some other information about catalase and peroxidases:
* Catalase is a relatively famous enzyme in that it it is an enzyme described as "virtual catalytic perfection" having the highest turnover and catalytic efficiency numbers numbers measured, catalysing over 10 million reactions per second.
* In higher organisms catalase is located in organelles called peroxisomes, usually in the liver and kidneys in mammals. Here catalase plays an important role in how the body detoxifies various toxic molecules in the bloodstream, ethanol being one of the important toxic molecules! It also prevents formation of carbon dioxide microbubbles in the bloodstream.
There are a whole range of enzymes that catalyse the breakdown of hydrogen peroxide, occurring in both microbial, plant and animal cells. According to the International Union of Biochemistry these are in group 1.11 of "peroxidase" enzymes as "acting on peroxide as acceptor". The most well-known enzyme that breaks down hydrogen peroxide is called catalase or the full name is hydrogen-peroxide: hydrogen peroxide oxidoreductase (EC number 1.11.1.6). Catalase breaks hydrogen peroxide down into oxygen and water. The reaction is 2 H2O2 (+enzyme) = O2+ 2 H2O(+enzyme)
Some other information about catalase and peroxidases:
* Catalase is a relatively famous enzyme in that it it is an enzyme described as "virtual catalytic perfection" having the highest turnover and catalytic efficiency numbers numbers measured, catalysing over 10 million reactions per second.
* In higher organisms catalase is located in organelles called peroxisomes, usually in the liver and kidneys in mammals. Here catalase plays an important role in how the body detoxifies various toxic molecules in the bloodstream, ethanol being one of the important toxic molecules! It also prevents formation of carbon dioxide microbubbles in the bloodstream.