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EC 1.14.13.179 Details
show Brenda entryEC number
1.14.13.179
Accepted name
methylxanthine N3-demethylase
Reaction
(1) theobromine + O2 + NAD(P)H + H+ = 7-methylxanthine + NAD(P)+ + H2O + formaldehyde;;(2) 3-methylxanthine + O2 + NAD(P)H + H+ = xanthine + NAD(P)+ + H2O + formaldehyde
Other name(s)
ndmB (gene name)
Systematic name
theobromine:oxygen oxidoreductase (N3-demethylating)
Comment
A non-heme iron oxygenase. The enzyme from the bacterium Pseudomonas putida shares an NAD(P)H-FMN reductase subunit with EC 1.14.13.178, methylxanthine N1-demethylase, and has higher activity with NADH than with NADPH [1]. Also demethylates caffeine and theophylline with lower efficiency. Forms part of the degradation pathway of methylxanthines.
History
created 2013
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1 Oxidoreductases
1.1 Acting on the CH-OH group of donors
1.6.4.1 created 1961, deleted 2002 1.6.4.2 created 1961, modified 1989, deleted 2002 1.6.4.3 created 1961, modified 1976, deleted 1983 1.6.4.4 created 1965, deleted 2002 1.6.4.5 created 1972, deleted 2002 1.6.4.6 created 1972, deleted 2002 1.6.4.7 created 1978, deleted 2002 1.6.4.8 created 1989, deleted 2002 1.6.4.9 created 1992, deleted 2002 1.6.4.10 created 1992, deleted 2002 1.14.13.45 created 1992, deleted 2003
