This view shows enzymes only for those organisms listed below, in the list of taxa known to possess the pathway. If an enzyme name is shown in bold, there is experimental evidence for this enzymatic activity.
|Superclasses:||Biosynthesis → Cofactors, Prosthetic Groups, Electron Carriers Biosynthesis → Porphyrin Compounds Biosynthesis → Chlorophyll Biosynthesis → Chlorophyll a Biosynthesis|
Some taxa known to possess this pathway include : Arabidopsis thaliana col
Expected Taxonomic Range: Viridiplantae
Chlorophyll is a green photosynthetic pigment found in photosynthetic plants, algae, and bacteria. Its name is derived from ancient Greek: chloros = green and phyllon = leaf. Chlorophyll functions as the main light harvesting pigment in photosynthesis, capturing photons and transfering them to the reaction centers. Chlorophyll absorbs mostly in the blue and, to a lesser extent, red portions of the electromagnetic spectrum, hence its intense green color. There are several variants of chlorophyll (chlorophyll a, chlorophyll a', chlorophyll b, chlorophyll c1, chlorophyll c2, and chlorophyll d).
About This Pathway
chlorophyll a (Chla) and chlorophyll b (Chlb) share the same structure except for the side chain at C-7 which is a methyl group in Chla and a formyl group in Chlb. This pathway describes the biosynthesis of Chla via the esterification of chlorophyllide a with geranylgeranyl diphosphate diphosphate. The esterification step is followed by several steps of reduction leading to the formation of chlorophyll a [Keller98].
Unification Links: AraCyc:PWY-5064
Keller98: Keller Y, Bouvier F, d'Harlingue A, Camara B (1998). "Metabolic compartmentation of plastid prenyllipid biosynthesis--evidence for the involvement of a multifunctional geranylgeranyl reductase." Eur J Biochem 251(1-2);413-7. PMID: 9492312
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