KEGG   ENZYME: 1.14.13.111Help
Entry
EC 1.14.13.111              Enzyme                                 

Name
methanesulfonate monooxygenase;
mesylate monooxygenase;
mesylate,reduced-FMN:oxygen oxidoreductase;
MsmABC;
methanesulfonic acid monooxygenase;
MSA monooxygenase;
MSAMO
Class
Oxidoreductases;
Acting on paired donors, with incorporation or reduction of molecular oxygen;
With NADH or NADPH as one donor, and incorporation of one atom of oxygen into the other donor
BRITE hierarchy
Sysname
methanesulfonate,NADH:oxygen oxidoreductase
Reaction(IUBMB)
methanesulfonate + NADH + H+ + O2 = formaldehyde + NAD+ + sulfite + H2O [RN:R09513]
Reaction(KEGG)
Substrate
methanesulfonate [CPD:C11145];
NADH [CPD:C00004];
H+ [CPD:C00080];
O2 [CPD:C00007]
Product
formaldehyde [CPD:C00067];
NAD+ [CPD:C00003];
sulfite [CPD:C00094];
H2O [CPD:C00001]
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.
History
EC 1.14.13.111 created 2009 as EC 1.14.14.6, transferred 2010 to EC 1.14.13.111
Pathway
Sulfur metabolism
Orthology
K16968  
methanesulfonate monooxygenase subunit alpha
K16969  
methanesulfonate monooxygenase subunit beta
Genes
BCT: 
BUE: 
PPK: 
PPNO: 
PRB: 
BPA: 
BBR: 
BBM: 
BBH: 
BBX: 
PUT: 
MPT: 
Mpe_A0919(msmS2) Mpe_A0920(msmB)
MNO: 
FIL: 
FIY: 
APB: 
 » show all
Taxonomy
Reference
1  [PMID:10094704]
  Authors
de Marco P, Moradas-Ferreira P, Higgins TP, McDonald I, Kenna EM, Murrell JC
  Title
Molecular analysis of a novel methanesulfonic acid monooxygenase from the methylotroph Methylosulfonomonas methylovora.
  Journal
J. Bacteriol. 181 (1999) 2244-51.
  Sequence
Reference
2  [PMID:8932698]
  Authors
Higgins TP, Davey M, Trickett J, Kelly DP, Murrell JC
  Title
Metabolism of methanesulfonic acid involves a multicomponent monooxygenase enzyme.
  Journal
Microbiology. 142 ( Pt 2) (1996) 251-60.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
UM-BBD (Biocatalysis/Biodegradation Database): 
BRENDA, the Enzyme Database: 

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