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Chlorophyllide-a oxygenase

Class of enzymes

Class of enzymes

FieldValue
NameChlorophyllide-a oxygenase
EC_number1.14.13.122
CAS_number216503-73-0

Chlorophyllide-a oxygenase (), chlorophyllide a oxygenase, chlorophyll-b synthase, CAO) is an enzyme with systematic name chlorophyllide-a:oxygen 7-oxidoreductase. This enzyme catalyses the following overall chemical reaction

The oxidation reaction uses molecular oxygen with nicotinamide adenine dinucleotide phosphate (NADPH) as a cofactor.

This enzyme contains a mononuclear iron centre and is part of the biosynthetic pathway to chlorophylls.

References

References

  1. (August 1999). "The AtCAO gene, encoding chlorophyll a oxygenase, is required for chlorophyll b synthesis in Arabidopsis thaliana". Proceedings of the National Academy of Sciences of the United States of America.
  2. (February 2000). "Cloning and functional expression of the gene encoding the key enzyme for chlorophyll b biosynthesis (CAO) from Arabidopsis thaliana". The Plant Journal.
  3. (April 2004). "Synthesis of chlorophyll b: localization of chlorophyllide a oxygenase and discovery of a stable radical in the catalytic subunit". BMC Plant Biology.
  4. (January 1994). "The derivation of the formyl-group oxygen of chlorophyll b in higher plants from molecular oxygen. Achievement of high enrichment of the 7-formyl-group oxygen from 18O2 in greening maize leaves". European Journal of Biochemistry.
  5. {{KEGG enzyme. 1.14.13.122
  6. Willows, Robert D.. (2003). "Biosynthesis of chlorophylls from protoporphyrin IX". Natural Product Reports.
  7. (2007). "Recent advances in chlorophyll biosynthesis". Photosynthesis Research.
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