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EC 1.14.13.111 Details
EC number
1.14.13.111
Accepted name
methanesulfonate monooxygenase (NADH)
Reaction
methanesulfonate + NADH + H+ + O2 = formaldehyde + NAD+ + sulfite + H2O
Other name(s)
mesylate monooxygenase, mesylate,reduced-FMN:oxygen oxidoreductase, MsmABC, methanesulfonic acid monooxygenase, MSA monooxygenase, MSAMO
Systematic name
methanesulfonate,NADH:oxygen oxidoreductase
Comment
A flavoprotein. Methanesulfonate is the simplest of the sulfonates and is a substrate for the growth of certain methylotrophic microorganisms. Compared with EC 1.14.14.5, alkanesulfonate monooxygenase, this enzyme has a restricted substrate range that includes only the short-chain aliphatic sulfonates (methanesulfonate to butanesulfonate) and excludes all larger molecules, such as arylsulfonates [1]. The enzyme from the bacterium Methylosulfonomonas methylovora is a multicomponent system comprising a hydroxylase, a reductase (MsmD) and a ferredoxin (MsmC). The hydroxylase has both large (MsmA) and small (MsmB) subunits, with each large subunit containing a Rieske-type [2Fe-2S] cluster. cf. EC 1.14.14.34, methanesulfonate monooxygenase (FMNH2).
History
created 2009 as EC 1.14.14.6, transferred 2010 to EC 1.14.13.111, modified 2016
EC Tree
1.1.1.68 created 1965, deleted 1978 [transferred to EC 1.1.99.15, deleted 1980]
1.1.1.70 created 1965, deleted 1978
1.1.1.74 created 1972, deleted 1976
1.1.1.89 created 1972, deleted 1976
1.1.1.109 created 1972, deleted 1976
1.1.1.139 created 1972, deleted 1978
1.1.1.155 created 1976, deleted 2004
1.1.1.171 created 1978, deleted 1984
1.1.1.180 created 1983, deleted 1984
1.1.1.182 created 1983, deleted 1990
1.1.1.204 created 1972 as EC 1.2.1.37, transferred 1984 to EC 1.1.1.204, modified 1989, deleted 2004
1.1.1.242 created 1992, deleted 2001
1.1.1.249 provisional version created 1999, deleted 1999 (reinstated 2001 as EC 2.5.1.46)
1.1.1.253 created 1999, deleted 2003