Catalyzes the oxidation of methanethiol, an organosulfur compound known to be produced in substantial amounts by gut bacteria (By similarity). Selenium-binding protein which may be involved in the sensing of reactive xenobiotics in the cytoplasm. May be involved in intra-Golgi protein transport (By similarity).
Subcellular locations: Nucleus, Cytoplasm, Cytosol, Membrane
May associate with Golgi membrane. May associate with the membrane of autophagosomes (By similarity).