What is the effect and mechanism of heavy metals on catalase in animals?

Catalase is ubiquitous in animal, plant and microbial cells, promotes the decomposition of hydrogen peroxide and has a detoxification effect.

Catalase is rich in sulfhydryl groups or other active groups that interact, heavy metals change the activity of enzymes by interacting with groups, and the effect of heavy metal ions on plant catalase, the greater the concentration of heavy metal solution in plants, the smaller the effect of catalase activity in plants, that is, the deeper the poisoning.

Catalase

Catalase is found in peroxides in red blood cells and some tissues, and its main role is to catalyze the decomposition of H2O2 into H2O and O2, so that H2O2 will not react with O2 under the action of iron chelate to form very harmful -OH

Catalase is the hallmark enzyme of peroxisomes, accounting for about 40% of the total peroxisome enzymes. Catalase works by reducing hydrogen peroxide to water: 2H2O2 O2 + 2H2O

Catalase (CAT) is an enzyme scavenger, also known as a touch enzyme, which is a conjugated enzyme with iron porphyrin as a cosmetic group. It can promote the decomposition of H2O2 into molecular oxygen and water, remove hydrogen peroxide from the body, so that cells are not poisoned by H2O2, and is one of the key enzymes in the biological defense system. The mechanism of CAT acting on hydrogen peroxide is essentially the disproportionation of H2O2, and two H2O2s must meet CAT successively and collide on the active center before the reaction can occur.

The higher the concentration of H2O2, the faster the decomposition.

Catalase is present in almost all living organisms. It is ubiquitous in respiring organisms, mainly in the chloroplasts, mitochondria, endoplasmic reticulum, liver and red blood cells of plants, and its enzymatic activity provides the body with an antioxidant defense mechanism.

CAT is an erythrosinase, and different ** have different structures. The level of activity varies from tissue to tissue. Hydrogen peroxide breaks down faster in the liver than in organs such as the brain or heart because of the high levels of CAT in the liver.

Catalase is ubiquitous in animal, plant, and microbial cells. It catalyzes the catalytic breakdown of H2O2 produced by cellular metabolism and the reduction of certain other oxides, and plays an important role in regulating the process of cell protection from death. Catalase is rich in sulfhydryl groups or other active groups that interact with each other, thereby changing the activity of the enzyme and presenting a toxic effect.

The content of this experiment is the effect of heavy metal ion lead on plant catalase, and it is concluded from the experiment that the greater the concentration of heavy metal solution in plants, the smaller the effect of catalase activity, that is, the deeper the poisoning. Keywords: catalase, plants, heavy metals.

Organisms will produce H2O2 in the process of respiratory metabolism, which has a relatively high oxidation and will.

Harm normal biological macromolecules such as proteins and DNA in cells. Catalase, is a catalytic hydrogen peroxide.

Enzymes that break down into oxygen and water, which are present within the peroxide of cells. H2O2 can be catalytically decomposed into H2O and.

O2, harmless to the human body. Catalase is present in various tissues of all known animals, especially in the liver.

It is present in high concentrations in the viscera. This is because the liver is the largest chemical plant in the human body and has a lot to do for its breakdown.

Anabolic, H202 is produced quickly, so high concentrations of catalase are required to work to protect liver cells.

Heavy metal pollution is actually heavy metal ions or inhalable particles, we generally come into contact with various metal cracking products, will not become ions or inhalable particles into the human body because of contact, so there is no impact on human health.

However, some practices may cause pollution, such as using stainless steel (containing heavy metals) containers to hold food for a long time, especially acidic food, which will make the heavy metals in the container dissolve, so it is not suitable to use stainless steel containers to hold food for a long time.