CBS (Cystathionine beta-synthase): CBS is an enzyme crucial for sulfur metabolism, playing a key role in converting homocysteine into cysteine. This process supports the production of glutathione, a vital antioxidant that protects cells from oxidative stress. CBS also participates in the transsulfuration pathway, which regulates sulfur-containing amino acids and hydrogen sulfide, a signaling molecule involved in various physiological functions. Proper CBS activity is essential for maintaining cellular redox balance, vascular function, and neurotransmitter regulation. Dysregulation of CBS is associated with metabolic disorders such as homocystinuria and cardiovascular diseases.