2 hydroxy 3 keto 5 methylthiopentenyl 1 phosphate phosphatase

2-hydroxy-3-keto-5-methylthiopentenyl-1-phosphate phosphatase (EC 3.1.3.87, HK-MTPenyl-1-P phosphatase, MtnX, YkrX) is an enzyme with systematic name 2-hydroxy-5-(methylthio)-3-oxopent-1-enyl phosphate phosphohydrolase. This enzyme catalyses the following chemical reaction

2-hydroxy-5-(methylthio)-3-oxopent-1-enyl phosphate + H₂O ⇌ 1,2-dihydroxy-5-(methylthio)pent-1-en-3-one + phosphate

The enzyme participates in the methionine salvage pathway in Bacillus subtilis.