5-methylsulfanyl-2,3-dioxopentyl phosphate + O2 + H2O = 4-methylsulfanyl-2-oxobutanoate + formate + phosphate + 2 H(+)
5-methylsulfanyl-2,3-dioxopentyl phosphate + o2 + h2o = 4-methylsulfanyl-2-oxobutanoate + formate + phosphate + 2 h(+)