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Literature summary for 2.5.1.32 extracted from

  • Schledz, M.; Al-Babili, S.; Lintig, J.v.; Haubruck, H.; Rabbani, S.; Kleinig, H.; Beyer, P.
    Phytoene synthase from Narcissus pseudonarcissus: functional expression, galactolipid requirement, topological distribution in chromoplasts and induction during flowering (1996), Plant J., 10, 781-792.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
galactose or galactose moieties in galactolipids are required Narcissus pseudonarcissus

Cloned(Commentary)

Cloned (Comment) Organism
overexpressed in insect Sf9 cells using the baculovirus lipofection system. The full-length overexpressed enzyme exhibits very reduced catalytic activity compared with an overexpressed N-truncated form, with its transit sequence of 214 base pairs removed from the psy cDNA at the 5'-end by site-directed mutagenesis. The shortened form readily binds to lipid bilayers Narcissus pseudonarcissus

Protein Variants

Protein Variants Comment Organism
additional information the full-length overexpressed enzyme exhibits very reduced catalytic activity compared with an overexpressed N-truncated form, with its transit sequence of 214 base pairs removed from the psy cDNA at the 5'-end by site-directed mutagenesis. The shortened form readily binds to lipid bilayers Narcissus pseudonarcissus

Inhibitors

Inhibitors Comment Organism Structure
fructose
-
Narcissus pseudonarcissus

Localization

Localization Comment Organism GeneOntology No. Textmining
chromoplast
-
Narcissus pseudonarcissus 9509
-
membrane the soluble enzyme is complexed and inactive, the membrane-bound enzyme is active Narcissus pseudonarcissus 16020
-
soluble the soluble enzyme is complexed and inactive, the membrane-bound enzyme is active Narcissus pseudonarcissus
-
-

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ stimulatory in presence of Mn2+ Narcissus pseudonarcissus
Mn2+ absolute requirement, optimum at 1 mM Narcissus pseudonarcissus

Organism

Organism UniProt Comment Textmining
Narcissus pseudonarcissus
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Narcissus pseudonarcissus

Source Tissue

Source Tissue Comment Organism Textmining
flower inner corona of, in all stages the steady-state phytoene synthase transcript levels are low Narcissus pseudonarcissus
-
additional information more activity in green leaves Narcissus pseudonarcissus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
geranylgeranyl diphosphate + geranylgeranyl diphosphate
-
Narcissus pseudonarcissus prephytoene diphosphate + diphosphate
-
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