5-methylsulfanyl-2,3-dioxopentyl phosphate --> 2-hydroxy-5-methylsulfanyl-3-oxopent-1-enyl phosphate (according to UniProt)

5-(methylthio)-2,3-dioxopentyl phosphate = 2-hydroxy-5-(methylthio)-3-oxopent-1-enyl phosphate (according to Swiss-Prot)