MSRB2 (Methionine Sulfoxide Reductase B2): MSRB2 is an enzyme that helps repair oxidised methionine residues in proteins, safeguarding cells from oxidative stress and preserving protein function. It is a key component of the body’s antioxidant defence system, supporting cellular resilience against environmental challenges. Studies on MSRB2 explore its potential links to ageing, neurodegenerative disorders, and other conditions associated with oxidative damage.