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MetaCyc Enzyme: 15-cis-phytoene desaturase

Gene: PDS Accession Number: AT4G14210 (MetaCyc)

Synonyms: AT4G14210

Species: Arabidopsis thaliana col

Subunit composition of 15-cis-phytoene desaturase = [PDS]
         phytoene desaturase subunit = PDS

Summary:
The enzyme phytoene desaturase (PYD) from Arabidopsis thaliana was expressed in Escherichia coli and its function demonstrated [Bartley99].

Unification Links: Entrez-gene:PDS3 , TAIR:AT4G14210

Gene-Reaction Schematic: ?

Gene-Reaction Schematic


Enzymatic reaction of: 15,9'-di-cis-phytofluene desaturase (15-cis-phytoene desaturase)

15,9'-di-cis-phytofluene + a plastoquinone <=> 9,15,9'-tri-cis-ζ-carotene + a plastoquinol

The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the direction in which it was curated.

The reaction is favored in the direction shown.

In Pathways: superpathway of carotenoid biosynthesis , trans-lycopene biosynthesis II (plants)


Enzymatic reaction of: 15-cis-phytoene desaturase

15-cis-phytoene + a plastoquinone <=> 15,9'-di-cis-phytofluene + a plastoquinol

The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the direction in which it was curated.

The reaction is favored in the direction shown.

In Pathways: superpathway of carotenoid biosynthesis , trans-lycopene biosynthesis II (plants)


Enzymatic reaction of: phytoene desaturase

Synonyms: phytoene dehydrogenase

EC Number: 1.3.5.5

15-cis-phytoene + 2 a plastoquinone <=> 9,15,9'-tri-cis-ζ-carotene + 2 a plastoquinol

The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.

Reversibility of this reaction is unspecified.

In Pathways: superpathway of carotenoid biosynthesis , trans-lycopene biosynthesis II (plants)


References

Bartley99: Bartley GE, Scolnik PA, Beyer P (1999). "Two Arabidopsis thaliana carotene desaturases, phytoene desaturase and zeta-carotene desaturase, expressed in Escherichia coli, catalyze a poly-cis pathway to yield pro-lycopene." Eur J Biochem 1999;259(1-2);396-403. PMID: 9914519


Report Errors or Provide Feedback
Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 42:D459-D471 2014
Page generated by SRI International Pathway Tools version 19.0 on Wed Jul 1, 2015, BIOCYC13A.