Methionine-R-sulfoxide reductase B2, mitochondrial (MSRB2)

Methionine-sulfoxide reductase that specifically reduces methionine (R)-sulfoxide back to methionine. While in many instances, methionine oxidation is the result of random oxidation after oxidative stress, methionine oxidation can also be a post- translational modification that occurs on specific residue.

Upon oxidative stress, may play a role in the preservation of mitochondrial integrity by decreasing the intracellular reactive oxygen species build-up through its scavenging role, hence contributing to cell survival and protein maintenance. .