ID 1.13.11.55 DE sulfur oxygenase/reductase. AN sulfur oxygenase. AN sulfur oxygenase reductase. CA 4 H2O + O2 + 4 sulfur = 6 H(+) + 2 hydrogen sulfide + 2 sulfite. CC -!- Elemental sulfur is both the electron donor and one of the two known CC acceptors, the other being oxygen. CC -!- Thiosulfate is also observed as a product, but is likely formed non- CC enzymically by a reaction between sulfite and sulfur. CC -!- This enzyme differs from EC 1.13.11.18 and EC 1.12.98.4 in that both CC activities occur simultaneously. DR P29082, SOR_ACIAM ; //