Literature summary for 2.5.1.32 extracted from

Welsch, R.; Beyer, P.; Hugueney, P.; Kleinig, H.; von Lintig, J.
Regulation and activation of phytoene synthase, a key enzyme in carotenoid biosynthesis, during photomorphogenesis (2000), Planta, 211, 846-854.

Search for more literature for 2.5.1.32

Activating Compound

Activating Compound	Comment	Organism	Structure
additional information	the enzyme is localized at thylakoid membranes in mature chloroplasts. Under certain light conditions, e.g. far-red light, the increase in PSY mRNA and protein levels is not accompanied by an increase in enzymatic activity. Under these conditions the enzyme is localized in the prolamellar body fraction in a mostly enzymatically inactive form. Subsequent illumination of dark-grown and/or in far-red light seedlings with white light causes the decay of these structures and a topological relocalization of PSY to developing thylakoids which results in its enzymatic activation. The light-dependent mechanism of regulation may contribute to ensuring a spatially and temporally coordinated increase in both carotenoid and chlorophyll contents	Sinapis alba

Localization

Localization	Comment	Organism	GeneOntology No.	Textmining
chloroplast	localized at thylakoid membranes in mature chloroplasts	Sinapis alba	9507	-
etioplast prolamellar body	under certain light conditions, e.g. far-red light, the increase in PSY mRNA and protein levels are not accompanied by an increase in enzymatic activity. Under those conditions the enzyme is localized in the prolamellar body fraction in a mostly enzymatically inactive form	Sinapis alba	9541	-

Organism

Organism	UniProt	Comment	Textmining
Sinapis alba	-	-	-

Source Tissue

Source Tissue	Comment	Organism	Textmining
cotyledon	-	Sinapis alba	-

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
geranylgeranyl diphosphate + geranylgeranyl diphosphate	-	Sinapis alba	prephytoene diphosphate + diphosphate	-	?

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Release 2023.1 (January 2023)