The Enzyme Database

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Accepted name: 7-methylxanthine demethylase
Reaction: 7-methylxanthine + O2 + NAD(P)H + H+ = xanthine + NAD(P)+ + H2O + formaldehyde
Other name(s): ndmC (gene name)
Systematic name: 7-methylxanthine:oxygen oxidoreductase (demethylating)
Comments: A non-heme iron oxygenase. The enzyme from the bacterium Pseudomonas putida prefers NADH over NADPH. The enzyme is specific for 7-methylxanthine [2]. Forms part of the caffeine degradation pathway.
Links to other databases: BRENDA, EAWAG-BBD, EXPASY, KEGG, MetaCyc
1.  Summers, R.M., Louie, T.M., Yu, C.L. and Subramanian, M. Characterization of a broad-specificity non-haem iron N-demethylase from Pseudomonas putida CBB5 capable of utilizing several purine alkaloids as sole carbon and nitrogen source. Microbiology 157 (2011) 583–592. [DOI] [PMID: 20966097]
2.  Summers, R.M., Louie, T.M., Yu, C.L., Gakhar, L., Louie, K.C. and Subramanian, M. Novel, highly specific N-demethylases enable bacteria to live on caffeine and related purine alkaloids. J. Bacteriol. 194 (2012) 2041–2049. [DOI] [PMID: 22328667]
[EC created 2011]

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