Lactalbumin

Lactalbumin is a protein found in milk. It is a major component of whey protein and has significant nutritional value. Lactalbumin is also used in a variety of food products, including infant formula, sports nutrition products, and dietary supplements.

Structure

Lactalbumin is a globular protein, meaning it has a spherical shape. It is composed of a single polypeptide chain that is folded into a compact, three-dimensional structure. The protein has four disulfide bridges, which help to stabilize its structure.

Function

In mammals, lactalbumin plays a crucial role in the production of lactose, the primary sugar found in milk. The protein binds to another enzyme, galactosyltransferase, to form the lactose synthase complex. This complex catalyzes the reaction that produces lactose from glucose and galactose.

In addition to its role in lactose synthesis, lactalbumin also has antimicrobial properties. It can bind to certain bacteria and viruses, preventing them from infecting cells.

Uses

Lactalbumin is used in a variety of food products due to its high nutritional value and functional properties. It is a major component of whey protein, which is used in sports nutrition products and dietary supplements. Lactalbumin is also used in infant formula, as it is similar to the protein found in human breast milk.

Health effects

Lactalbumin is generally considered safe for consumption. However, some people may be allergic to it, leading to symptoms such as hives, swelling, and difficulty breathing. In rare cases, a severe allergic reaction known as anaphylaxis can occur.

See also

• Whey protein
• Lactose
• Galactosyltransferase
• Milk allergy