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Literature summary for 2.4.1.240 extracted from

  • Shute, J.L.; Jourdan, P.S.; Mansell, R.L.
    UDP-glucose:glucosyltransferase activity involved in the biosynthesis of flavonol triglucosides in Pisum sativum L. seedlings (1979), Z. Naturforsch. C, 34, 738-741.
    View publication on PubMed
Search for more literature for 2.4.1.240

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
additional information Pisum sativum involved in the biosynthesis of flavonol triglucosides ?
-
 ?

Organism

Organism UniProt Comment Textmining
Pisum sativum
-
 var. Alaska
-

Reaction

Reaction Comment Organism Reaction ID
UDP-glucose + a flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucoside = UDP + a flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucosyl-(1->2)-beta-D-glucoside one of three specific glucosyltransferases in pea, Pisum sativum, that successively add a beta-D-glucosyl group first to O-3 of kaempferol, and then to O-2 of the previously added glucosyl group giving the 3-O-sophoroside and then the 3-O-sophorotrioside, see also EC 2.4.1.91 flavonol 3-O-glucosyltransferase, and EC 2.4.1.239 flavonol-3-O-glucoside glucosyltransferase Pisum sativum
a

Source Tissue

Source Tissue Comment Organism Textmining
leaf young leaf tissues have much higher levels of glucosyltransferase activity than the petioles and internodes Pisum sativum
-
seedling young, light-grown, much higher levels of glucosyltransferase activity in young leaf tissues than in petioles and internodes Pisum sativum
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information involved in the biosynthesis of flavonol triglucosides Pisum sativum ?
-
 ?
additional information glucosylation of kaempferol and quercetin in the 3-position to form the 3-O-triglucoside, reaction proceeds from the aglycone via the mono- and diglucoside intermediates, this reaction sequence is probably associated with three distinct enzyme activities Pisum sativum ?
-
 ?
UDP-glucose + kaempferol 3-O-beta-D-glucosyl-(1-2)-beta-D-glucoside
-
 Pisum sativum UDP + kaempferol 3-O-beta-D-glucosyl-(1-2)-beta-D-glucosyl-(1-2)-beta-D-glucoside
-
 ?
UDP-glucose + quercetin 3-O-beta-D-glucosyl-(1-2)-beta-D-glucoside
-
 Pisum sativum UDP + quercetin 3-O-beta-D-glucosyl-(1-2)-beta-D-glucosyl-(1-2)-beta-D-glucoside
-
 ?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
 assay at Pisum sativum

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.3
-
 assay at Pisum sativum