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EC 1.6.3.4 Details

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EC number

1.6.3.4

Accepted name

NADH oxidase (H₂O-forming)

Reaction

2 NADH + 2 H⁺ + O₂ = 2 NAD⁺ + 2 H₂O

Other name(s)

H₂O-forming NADH oxidase, Nox-2

Systematic name

NADH:oxygen oxidoreductase (H₂O-forming)

Comment

A flavoprotein (FAD). The bacterium Streptococcus mutans contains two distinct NADH oxidases, a H₂O-forming enzyme and a H₂O₂-forming enzyme (cf. EC 1.6.3.3, NADH oxidase (H₂O₂-forming)) [1].

History

created 2013

EC Tree

1 Oxidoreductases

1.1 Acting on the CH-OH group of donors

1.2 Acting on the aldehyde or oxo group of donors

1.3 Acting on the CH-CH group of donors

1.4 Acting on the CH-NH₂ group of donors

1.5 Acting on the CH-NH group of donors

1.6 Acting on NADH or NADPH

1.6.1 With NAD⁺ or NADP⁺ as acceptor

1.6.2 With a heme protein as acceptor

1.6.3 With oxygen as acceptor

1.6.3.1 NAD(P)H oxidase (H₂O₂-forming)

1.6.3.2 NAD(P)H oxidase (H₂O-forming)

1.6.3.3 NADH oxidase (H₂O₂-forming)

1.6.3.4 NADH oxidase (H₂O-forming)

1.6.3.5 renalase

1.6.4 With a disulfide as acceptor (deleted sub-subclass)

1.6.5 With a quinone or similar compound as acceptor

1.6.6 With a nitrogenous group as acceptor

1.6.7 With an iron-sulfur protein as acceptor (deleted sub-subclass)

1.6.8 With a flavin as acceptor (deleted sub-subclass)

1.6.99 With unknown physiological acceptors

1.7 Acting on other nitrogenous compounds as donors

1.8 Acting on a sulfur group of donors

1.9 Acting on a heme group of donors

1.10 Acting on diphenols and related substances as donors

1.11 Acting on a peroxide as acceptor

1.11.1 Peroxidases

1.11.2 Peroxygenases

1.12 Acting on hydrogen as donor

1.13 Acting on single donors with incorporation of molecular oxygen (oxygenases)

1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen

1.15 Acting on superoxide as acceptor

1.16 Oxidizing metal ions

1.17 Acting on CH or CH₂ groups

1.18 Acting on iron-sulfur proteins as donors

1.18.1 With NAD⁺ or NADP⁺ as acceptor

1.18.2 With dinitrogen as acceptor (deleted sub-subclass)

1.18.3 With H⁺ as acceptor (deleted sub-subclass)

1.18.6 With dinitrogen as acceptor

1.18.96 With other, known, acceptors (deleted sub-subclass)

1.18.99 With H⁺ as acceptor (deleted sub-subclass)

1.18.99.1 created 1961 as EC 1.98.1.1, transferred 1965 to EC 1.12.1.1, transferred 1972 to EC 1.12.7.1, transferred 1978 to EC 1.18.3.1, transferred 1984 to EC 1.18.99.1, deleted 2002

1.19 Acting on reduced flavodoxin as donor

1.20 Acting on phosphorus or arsenic in donors

1.21 Catalysing the reaction X-H + Y-H = X-Y

1.21.1 With NAD⁺ or NADP⁺ as acceptor

1.21.3 With oxygen as acceptor

1.21.4 With a disulfide as acceptor

1.21.98 With other, known, physiological acceptors

1.21.99 With unknown physiological acceptors

1.22 Acting on halogen in donors

1.23 Reducing C-O-C group as acceptor

1.97 Other oxidoreductases

1.98 Enzymes using H₂ as reductant (deleted subclass)

1.99 Other enzymes using O₂ as oxidant (deleted subclass)