ID 1.14.14.34 DE methanesulfonate monooxygenase (FMNH2). CA methanesulfonate + FMNH2 + O2 = FMN + sulfite + formaldehyde + H2O + CA 2 H(+). CC -!- The enzyme, characterized from Pseudomonas strains, allows the CC organisms to utilize methanesulfonate as their sulfur source. CC -!- It acts in combination with a dedicated NADH-dependent FMN reductase CC (EC 1.5.1.42), which provides it with reduced FMN. cf. CC EC 1.14.13.111. //