Kysteiini

Kysteiini is a non-essential amino acid that plays a crucial role in various biological processes. Its unique characteristic is the presence of a thiol group, a sulfur-containing functional group. This thiol group is highly reactive and can form disulfide bonds with other cysteine molecules. These disulfide bonds are essential for the tertiary structure and stability of many proteins, including enzymes and structural proteins.

The human body can synthesize kysteiini, which is why it's classified as non-essential. However, it is still vital for overall health. It is a precursor to glutathione, a powerful antioxidant that protects cells from damage caused by free radicals. Kysteiini also contributes to the production of collagen, a key protein in skin, bones, and connective tissues. Furthermore, it is involved in detoxification processes, aiding the body in eliminating harmful substances.

Dietary sources of kysteiini include protein-rich foods such as poultry, eggs, dairy products, and legumes. While supplementation is available, it's generally recommended to obtain adequate amounts through a balanced diet. In certain medical conditions, or when protein intake is insufficient, kysteiini supplementation might be considered under the guidance of a healthcare professional. Its involvement in diverse cellular functions makes it a significant component of human biochemistry.