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EC 1.21.3.7 Details

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EC number

1.21.3.7

Accepted name

tetrahydrocannabinolic acid synthase

Reaction

cannabigerolate + O₂ = Δ⁹-tetrahydrocannabinolate + H₂O₂

Other name(s)

THCA synthase, Δ¹-tetrahydrocannabinolic acid synthase

Systematic name

cannabigerolate:oxygen oxidoreductase (cyclizing, Δ⁹-tetrahydrocannabinolate-forming)

Comment

A flavoprotein (FAD). The cofactor is covalently bound. Part of the cannabinoids biosynthetic pathway in the plant Cannabis sativa. The enzyme can also convert cannabinerolate (the (Z)-isomer of cannabigerolate) to Δ⁹-THCA with lower efficiency. Whereas the product was originally called Δ¹-tetrahydrocannabinolate, the recommended name according to systematic peripheral numbering is Δ⁹-tetrahydrocannabinolate.

History

created 2012

EC Tree

1 Oxidoreductases

1.1 Acting on the CH-OH group of donors

1.1.1 With NAD⁺ or NADP⁺ as acceptor

1.1.2 With a cytochrome as acceptor

1.1.3 With oxygen as acceptor

1.1.3.1 created 1961, deleted 1984

1.1.3.2 L-lactate oxidase

1.1.3.3 malate oxidase

1.1.3.4 glucose oxidase

1.1.3.5 hexose oxidase

1.1.3.6 cholesterol oxidase

1.1.3.7 aryl-alcohol oxidase

1.1.3.8 L-gulonolactone oxidase

1.1.3.9 galactose oxidase

1.1.3.10 pyranose oxidase

1.1.3.11 L-sorbose oxidase

1.1.3.12 pyridoxine 4-oxidase

1.1.3.13 alcohol oxidase

1.1.3.14 catechol oxidase (dimerizing)

1.1.3.15 (S)-2-hydroxy-acid oxidase

1.1.3.16 ecdysone oxidase

1.1.3.17 choline oxidase

1.1.3.18 secondary-alcohol oxidase

1.1.3.19 4-hydroxymandelate oxidase (decarboxylating)

1.1.3.20 long-chain-alcohol oxidase

1.1.3.21 glycerol-3-phosphate oxidase

1.1.3.22 created 1961 as EC 1.2.3.2, transferred 1984 to EC 1.1.3.22, modified 1989, deleted 2004

1.1.3.23 thiamine oxidase

1.1.3.24 L-galactonolactone oxidase

1.1.3.25 created 1986, deleted 2005

1.1.3.26 created 1989, deleted 2002

1.1.3.27 hydroxyphytanate oxidase

1.1.3.28 nucleoside oxidase

1.1.3.29 N-acylhexosamine oxidase

1.1.3.30 polyvinyl-alcohol oxidase

1.1.3.31 created 1992, deleted 2003

1.1.3.32 created 1999, deleted 2002

1.1.3.33 created 1999, deleted 2002

1.1.3.34 created 1999, deleted 2002

1.1.3.35 created 1999, deleted 2002

1.1.3.36 created 1999, deleted 2002

1.1.3.37 D-arabinono-1,4-lactone oxidase

1.1.3.38 vanillyl-alcohol oxidase

1.1.3.39 nucleoside oxidase (H₂O₂-forming)

1.1.3.40 D-mannitol oxidase

1.1.3.41 alditol oxidase

1.1.3.42 prosolanapyrone-II oxidase

1.1.3.43 paromamine 6′-oxidase

1.1.3.44 6′′′-hydroxyneomycin C oxidase

1.1.3.45 aclacinomycin-N oxidase

1.1.3.46 4-hydroxymandelate oxidase

1.1.3.47 5-(hydroxymethyl)furfural oxidase

1.1.3.48 3-deoxy-α-D-manno-octulosonate 8-oxidase

1.1.3.49 (R)-mandelonitrile oxidase

1.1.3.50 C-glycoside oxidase

1.1.4 With a disulfide as acceptor

1.1.5 With a quinone or similar compound as acceptor

1.1.7 With an iron-sulfur protein as acceptor

1.1.9 With a copper protein as acceptor

1.1.98 With other, known, physiological acceptors

1.1.99 With unknown physiological acceptors

1.1.99.1 choline dehydrogenase

1.1.99.2 L-2-hydroxyglutarate dehydrogenase

1.1.99.3 gluconate 2-dehydrogenase (acceptor)

1.1.99.4 dehydrogluconate dehydrogenase

1.1.99.5 glycerol-3-phosphate dehydrogenase

1.1.99.6 D-lactate dehydrogenase (acceptor)

1.1.99.7 lactate—malate transhydrogenase

1.1.99.8 alcohol dehydrogenase (acceptor)

1.1.99.9 pyridoxine 5-dehydrogenase

1.1.99.10 glucose dehydrogenase (acceptor)

1.1.99.11 fructose 5-dehydrogenase

1.1.99.12 sorbose dehydrogenase

1.1.99.13 glucoside 3-dehydrogenase (acceptor)

1.1.99.14 glycolate dehydrogenase

1.1.99.15 created 1978, deleted 1980

1.1.99.16 malate dehydrogenase (acceptor)

1.1.99.17 created 1982, deleted 2003

1.1.99.18 cellobiose dehydrogenase (acceptor)

1.1.99.19 uracil dehydrogenase

1.1.99.20 alkan-1-ol dehydrogenase (acceptor)

1.1.99.21 D-sorbitol dehydrogenase (acceptor)

1.1.99.22 glycerol dehydrogenase (acceptor)

1.1.99.23 polyvinyl-alcohol dehydrogenase (acceptor)

1.1.99.24 hydroxyacid-oxoacid transhydrogenase

1.1.99.25 quinate dehydrogenase (pyrroloquinoline-quinone)

1.1.99.26 3-hydroxycyclohexanone dehydrogenase

1.1.99.27 (R)-pantolactone dehydrogenase (flavin)

1.1.99.28 glucose-fructose oxidoreductase

1.1.99.29 pyranose dehydrogenase (acceptor)

1.1.99.30 2-oxo-acid reductase

1.1.99.31 (S)-mandelate dehydrogenase

1.1.99.32 L-sorbose 1-dehydrogenase

1.1.99.33 formate dehydrogenase (acceptor)

1.1.99.34 glucose-6-phosphate dehydrogenase (coenzyme-F₄₂₀)

1.1.99.35 soluble quinoprotein glucose dehydrogenase

1.1.99.36 alcohol dehydrogenase (nicotinoprotein)

1.1.99.37 methanol dehydrogenase (nicotinoprotein)

1.1.99.38 2-deoxy-scyllo-inosamine dehydrogenase (AdoMet-dependent)

1.1.99.39 D-2-hydroxyglutarate dehydrogenase

1.1.99.40 (R)-2-hydroxyglutarate—pyruvate transhydrogenase

1.1.99.41 3-hydroxy-1,2-didehydro-2,3-dihydrotabersonine reductase

1.1.99.42 4-pyridoxic acid dehydrogenase

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

1.7 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

1.12 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

1.14.1 With NADH or NADPH as one donor (deleted sub-subclass)

1.14.2 With ascorbate as one donor (deleted sub-subclass)

1.14.3 With reduced pteridine as one donor (deleted sub-subclass)

1.14.11 With 2-oxoglutarate as one donor, and incorporation of one atom of oxygen into each donor

1.14.12 With NADH or NADPH as one donor, and incorporation of two atoms of oxygen into the other donor

1.14.13 With NADH or NADPH as one donor, and incorporation of one atom of oxygen into the other donor

1.14.14 With reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen into the other donor

1.14.15 With reduced iron-sulfur protein as one donor, and incorporation of one atom of oxygen into the other donor

1.14.16 With reduced pteridine as one donor, and incorporation of one atom of oxygen into the other donor

1.14.17 With reduced ascorbate as one donor, and incorporation of one atom of oxygen into the other donor

1.14.18 With another compound as one donor, and incorporation of one atom of oxygen into the other donor

1.14.19 With oxidation of a pair of donors resulting in the reduction of O₂ to two molecules of water

1.14.20 With 2-oxoglutarate as one donor, and the other dehydrogenated

1.14.21 With NADH or NADPH as one donor, and the other dehydrogenated

1.14.99 Miscellaneous

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

1.19 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

1.21.3.1 isopenicillin-N synthase

1.21.3.2 columbamine oxidase

1.21.3.3 reticuline oxidase

1.21.3.4 sulochrin oxidase [(+)-bisdechlorogeodin-forming]

1.21.3.5 sulochrin oxidase [(-)-bisdechlorogeodin-forming]

1.21.3.6 aureusidin synthase

1.21.3.7 tetrahydrocannabinolic acid synthase

1.21.3.8 cannabidiolic acid synthase

1.21.3.9 dichlorochromopyrrolate synthase

1.21.3.10 hercynylcysteine S-oxide synthase

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)

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Release 2023.1 (January 2023)