Belonging to the family of oxidoreductases, specifically those acting on a sulfur group of donors with oxygen as acceptor, the 3 substrates of Methanethiol oxidase are methanethiol, O2, and H2O, whereas its 3 products are formaldehyde, hydrogen sulfide, and methanethiol:oxygen oxidoreductase.
The 3 substrates of this enzyme are methanethiol, O2, and H2O, whereas its 3 products are formaldehyde, hydrogen sulfide, and H2O2. 
