Peroxidases

Definition

Peroxidases are enzymes that catalyze the reduction of hydrogen peroxide and organic peroxides. They play a crucial role in protecting cells from oxidative damage by detoxifying peroxides.

5 Must Know Facts For Your Next Test

1. Peroxidases help in breaking down harmful peroxides into water and oxygen, reducing oxidative stress in cells.
2. They are widely used in microbial control as they can degrade reactive oxygen species produced during exposure to disinfectants.
3. Peroxidases have applications in wastewater treatment and bioremediation by breaking down pollutants.
4. Certain microorganisms produce peroxidases as a defense mechanism against host immune responses.
5. In laboratory settings, peroxidase activity is often measured using substrates like guaiacol or ABTS for detecting microbial contamination.

Review Questions

Related terms

Hydrogen Peroxide:

A reactive oxygen species that can cause oxidative damage to cells.

Catalase:

An enzyme that also breaks down hydrogen peroxide into water and oxygen but at a much faster rate than peroxidases.

Reactive Oxygen Species (ROS): Chemically reactive molecules containing oxygen that can lead to cell damage.