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Literature summary for 2.4.1.123 extracted from

  • Panikulangara, T.J.; Eggers-Schumacher, G.; Wunderlich, M.; Stransky, H.; Schoffl, F.
    Galactinol synthase1. A novel heat shock factor target gene responsible for heat-induced synthesis of raffinose family oligosaccharides in Arabidopsis (2004), Plant Physiol., 136, 3148-3158.
    View publication on PubMedView publication on EuropePMC
Search for more literature for 2.4.1.123

Activating Compound

Activating Compound Comment Organism Structure
additional information enzyme expression is heat-inducible being induced by heat-shock proteins in all vegetative tissues, transcriptionally controlled, overview Arabidopsis thaliana

Protein Variants

Protein Variants Comment Organism
additional information no heat-induction of enzyme expression in heat-shock factor HSF3-overexpressing transgenic plants, construction of transgenic plants containing the enzyme-promotor::beta-glucuronidase-reporter gene constructs, which are upregulated under heat stress, phenotyping Arabidopsis thaliana

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
UDP-galactose + myo-inositol Arabidopsis thaliana step in biosynthesis of raffinose from sucrose, under heat stress the content of raffinose oligosaccharides family members, as raffinose, stachyose, and galactinol, is enhanced UDP + O-alpha-D-galactosyl-(1-3)-1D-myo-inositol
-
 ?

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
-
 wild-type plants and HSF3-overexpressing transgenic plants
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
 Arabidopsis thaliana
-
additional information enzyme expression is heat-inducible being induced by heat-shock proteins in all vegetative tissues Arabidopsis thaliana
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
 in vivo activity at different temperatures in wild-type and transgenic plants Arabidopsis thaliana

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
UDP-galactose + myo-inositol
-
 Arabidopsis thaliana UDP + O-alpha-D-galactosyl-(1-3)-1D-myo-inositol
-
 ?
UDP-galactose + myo-inositol step in biosynthesis of raffinose from sucrose, under heat stress the content of raffinose oligosaccharides family members, as raffinose, stachyose, and galactinol, is enhanced Arabidopsis thaliana UDP + O-alpha-D-galactosyl-(1-3)-1D-myo-inositol
-
 ?

Synonyms

Synonyms Comment Organism
galactinol synthase1
-
 Arabidopsis thaliana
GolS1
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 Arabidopsis thaliana