THIOREDOXIN REDUCTASE 

Thioredoxin reductase is an enzyme that plays a key role in the thioredoxin system, which is involved in maintaining the redox balance within cells. It catalyzes the reduction of thioredoxin, facilitating the reduction of other proteins by thioredoxin. This enzyme is crucial for various cellular processes, including DNA synthesis, defence against oxidative stress, and regulation of cellular growth.