4-Methylaminobutanoate oxidase (methylamine-forming)

4-methylaminobutanoate oxidase (methylamine-forming)
Identifiers
EC no.1.5.3.21
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
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PMCarticles
PubMedarticles
NCBIproteins

4-methylaminobutanoate oxidase (methylamine-forming) (EC 1.5.3.21, mao (gene)) is an enzyme with systematic name 4-methylaminobutanoate methylamidohydrolase.[1] This enzyme catalyses the following chemical reaction

4-(methylamino)butyric acid
+ H2O
 
 
O2
H2O2
O2
H2O2
 
 

The enzyme participates in the nicotine degradation in soil bacterium Arthrobacter nicotinovorans.[2] This bacterium also contains the enzyme 4-methylaminobutanoate oxidase (formaldehyde-forming), which gives γ-aminobutyric acid and formaldehyde as its products, rather than succinic semialdehyde and methylamine.[3]

References

  1. ^ Chiribau CB, Mihasan M, Ganas P, Igloi GL, Artenie V, Brandsch R (April 2006). "Final steps in the catabolism of nicotine". The FEBS Journal. 273 (7): 1528–36. doi:10.1111/j.1742-4658.2006.05173.x. PMID 16689938.
  2. ^ Enzyme 1.5.3.21 at KEGG Pathway Database.
  3. ^ Chiribau CB, Sandu C, Fraaije M, Schiltz E, Brandsch R (December 2004). "A novel gamma-N-methylaminobutyrate demethylating oxidase involved in catabolism of the tobacco alkaloid nicotine by Arthrobacter nicotinovorans pAO1" (PDF). European Journal of Biochemistry. 271 (23–24): 4677–84. doi:10.1111/j.1432-1033.2004.04432.x. PMID 15606755.