:HCO₂^- -> CO₂ + H⁺ + 2 e^-

Thioredoxin reductase

Thioredoxin reductase uses a cysteine-selenocysteine pair to reduce the disulfide in thioredoxin. The selenocysteine is arranged in an unusual Sec-His-Glu catalytic triad, which tunes its pKa.

Roles in non-animals

Selenocysteine-containing