formylglycine-generating oxidase activity
Catalysis of the reaction: A [sulfatase]-L-cysteine + O2 + 2 a thiol = a [sulfatase]-3-oxo-L-alanine + hydrogen sulfide + a disulfide + H2O.
GO:0016670
oxidoreductase activity, acting on a sulfur group of donors, oxygen as acceptor
is_a