1.3.5.5: 15-cis-phytoene desaturase

This is an abbreviated version!
For detailed information about 15-cis-phytoene desaturase, go to the full flat file.

Reaction

15,9'-dicis-phytofluene
+
plastoquinone
=
9,15,9'-tricis-zeta-carotene
+
plastoquinol

Synonyms

BoPDS, CitPDS1, CrtP, PDS, PDS1, PDS3

ECTree

     1 Oxidoreductases
         1.3 Acting on the CH-CH group of donors
             1.3.5 With a quinone or related compound as acceptor
                1.3.5.5 15-cis-phytoene desaturase

General Information

General Information on EC 1.3.5.5 - 15-cis-phytoene desaturase

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GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
malfunction
both the albino and dwarf phenotypes of the pds3 mutant result from functional disruption of the PDS3 gene. Chloroplast development is arrested at the proplastid stage in the pds3 mutant. Further analysis shows that a high level of phytoene is accumulated in the pds3 mutant. Disrupting PDS3 gene results in gene expression changes involved in at least 20 metabolic pathways, including the inhibition of many genes in carotenoid, chlorophyll, and GA biosynthesis pathways. The accumulated phytoene in the pds3 mutant might play an important role in certain negative feedbacks to affect gene expression of diverse cellular pathways
metabolism
maize phytoene desaturase and zeta-carotene desaturase catalyse a poly-Z desaturation pathway to the predominate geometric isomer 7,9,7',9'-tetra-Z-lycopene (poly-Z-lycopene or prolycopene), and not the all-trans substrate required by the downstream lycopene cyclase enzymes
physiological function