1.14.13.122: chlorophyllide-a oxygenase

This is an abbreviated version!
For detailed information about chlorophyllide-a oxygenase, go to the full flat file.

Reaction

Synonyms

AtPTC52, CAO, CAO1, Cao2, CAO_1, chlorophyll a oxygenase, chlorophyll a oxygenase 1, chlorophyll a oxygenase/chlorophyll b synthase, chlorophyllide a oxygenase, chlorophyllide a oxygenase 1, EC 1.13.12.14, fch2, OsCAO1, Pchlide a oxygenase, PGL, protochlorophyllide a oxygenase, ZmCAO1

ECTree

     1 Oxidoreductases

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

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

                1.14.13.122 chlorophyllide-a oxygenase

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Results	in table
3	Activating Compound
29	AA Sequence
1	CAS Registry Number
26	Cloned(Commentary)
23	Cofactor
1	Expression
7	General Information
2	General Stability
6	Inhibitors
1	KM Value [mM]
27	Localization
9	Metals/Ions
6	Molecular Weight [Da]
64	Natural Substrates/ Products (Substrates)
38	Organism
5	Pathway
1	pI Value
48	Protein Variants
6	Purification (Commentary)
17	Reaction
38	Reference
1	Renatured (Commentary)
27	Source Tissue
3	Specific Activity [micromol/min/mg]
77	Substrates and Products (Substrate)
6	Subunits
58	Synonyms
1	Systematic Name
1	Temperature Optimum [°C]

Systematic Name

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Systematic Name on EC 1.14.13.122 - chlorophyllide-a oxygenase

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SYSTEMATIC NAME

IUBMB Comments

chlorophyllide-a:oxygen 7-oxidoreductase

Chlorophyll b is required for the assembly of stable light-harvesting complexes (LHCs) in the chloroplast of green algae, cyanobacteria and plants [2,3]. Contains a mononuclear iron centre [3]. The enzyme catalyses two successive hydroxylations at the 7-methyl group of chlorophyllide a. The second step yields the aldehyde hydrate, which loses H2O spontaneously to form chlorophyllide b [2]. Chlorophyll a and protochlorophyllide a are not substrates [2].