3-mercaptopropionate dioxygenase

UniProtKB accession:  Q9I0N5

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UniProtKB description:  Thiol dioxygenase that catalyzes the dioxygenation of 3-mercaptopropionate (3-MPA) to 3-sulfinopropionate (3-SPA). To a lesser extent (40-fold lower efficiency), is also able to oxidize cysteine to cysteine sulfinate (CSA). Cannot use N-acetyl-L-cysteine, homocysteine, and cysteamine as substrates. The physiological role of this enzyme is unclear.