Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Define about the Glutathione peroxidases - Selenium?
The role of selenium in the cytosolic enzyme, glutathione peroxidase (GSHPx), was first illustrated in 1973. Four selenium dependent glutathione peroxidases have been identified and named as Glutathione peroxidases 1-4 (GSHPxs 1-4). During stress, infection, or tissue injury, selenoenzymes may protect against the damaging effects of hydrogen peroxide or oxygen-rich free radicals. This family of enzymes catalyzes the destruction of hydrogen peroxide or lipid hydroperoxides according to the following general reactions:
H2O2 + 2GSH → 2H2O + GSSG
ROOH + 2GSH → ROH + H2O + GSSG
Where, GSH is glutathione and GSSG is its oxidized form.
Thus, from the reaction above, it is evident that the main role of glutathione peroxidases is to reduce hydrogen .peroxide and free hydroperoxides in different cells and tissues by using glutathione (GSH) as the hydrogen donor. Thus, the reactive species of hydroperoxide free radicals are converted into innocuous molecules of water. GSHPx-l is present in virtually all cells, GSHPx-2 is localized in the gastrointestinal tract, and GSHPx-3 is present in plasma while GSHPx-4 is most abundant in testis but present in other tissues also. GSrn4plays a major role in protecting against lipid peroxidation as it is the only intracellular enzyme that can reduce fatty acid hydro peroxide, GSHPx-3 in plasma can also perform this role.
Explain the Properties gum karaya Gum karaya is water-swellable rather than water-soluble and absorbs water very rapidly to form viscous colloidal dispersions at low concentra
During digestion, the role of pancreatic lipase is to: -digest cholesterol into dimethlyalpyrophosphase -inhibits interactions between lipids and bile salts -hydrolize TG
The excretion by the human kidneys 1. Descending limb of Loop of Henle is impermeable to water 2. Distal convoluted tubule is incapable of reabsorbing HCO3 3. Nearly 99 p
Q. After the morula stage what is the next stage? What is the morphological feature that defines this stage? In the blastula stage the compactness is lost and an internal cavit
Q. What are the three major cell types that form the osseous tissue? What are their functions? The three major cell types of the osseous tissue are the osteocytes, the osteobla
What are some signs and symptoms found in patients with hyperthyroidism? The hormones made by the thyroid gland stimulate the basal metabolism of the body. In hyperthyroidism t
Colibacillosis of newborn animals This is the commonest disease entity of newborn farm animals. In calves the disease occurs in three forms, viz. enteric colibacillosis manif
Name the two hormones produced by the pancreas and say (a) in what circumstances, (b) in what way, they adjust the glucose concentration in the blood.
What is the carbon cycle? The carbon cycle shows the circulation and recycling of the chemical element carbon in nature as a result of the action of living beings. Photosynt
Q. What are hormones? Hormones are substances collected by the circulation and secreted by the endocrine glands that act to produce effects upon specific tissues and organs and
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd