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Match the entries in Group I with the enzymes in Group II.
Group I Group II P. NAD+ 1. Glutathione peroxidase Q. Selenium 2. Nitrogenase R. Pyridoxal 3. Lactate dehydrogenase phosphate S. Molybdenum 4. Glycogen phosphorylase
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- P-3, Q-2, R-4, S-1
- P-4, Q-1, R-3, S-2
- P-3, Q-1, R-4, S-2
- P-3, Q-4, R-2, S-1
Correct Option: C
Lactate dehydrogenase (NAD+ oxidoreductase) is a ubiquitous enzyme among vertebrates and carries out the reaction: NAD+ + lactate <=> NADH + Pyruvate. Glycogen Phosphorylase catalyzes phosphorolytic cleavage of α (1, 4) glycosidic linkages of glycogen, releasing glucose-1-phosphate as the reaction product. Pyridoxal phosphate (PLP), a derivative of vitamin B6, serves as prosthetic group for Glycogen Phosphorylase. Nitrogenase is a two-protein complex. One component, called Nitrogenase Reductase (NR) is an iron-containing protein that accepts accepts electrons from ferredoxin, a strong reductant, and then delivers them to the other component, called Nitrogenase, or Iron-Molybdenum protein. There are several proteins in mammalian cells that can metabolize hydrogen peroxide and lipid hydroperoxides. These proteins include four selenium-containing glutathione peroxidases that are found in different cell fractions and tissues of the body. These proteins are called glutathione peroxidases.
