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Literature summary for 2.4.1.81 extracted from

  • Sutter, A.; Ortmann, R.; Grisebach, H.
    Purification and properties of an enzyme from cell suspension cultures of parsley catalyzing the transfer of D-glucose from UDP-D-glucose to flavonoids (1972), Biochim. Biophys. Acta, 258, 71-87.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
bovine serum albumin stimulates Petroselinum crispum

Inhibitors

Inhibitors Comment Organism Structure
(NH4)2SO4 weak Petroselinum crispum
ethylene monomethylether
-
Petroselinum crispum
Tris-HCl in 1 M Tris-HCl buffer the reaction rate is 70% of that observed in 0.1 M buffer Petroselinum crispum
UDP weak Petroselinum crispum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0015
-
luteolin
-
Petroselinum crispum
0.0027
-
apigenin
-
Petroselinum crispum
0.01
-
naringenin
-
Petroselinum crispum
0.12
-
UDPglucose reaction with apigenin Petroselinum crispum
0.26
-
TDPglucose reaction with apigenin Petroselinum crispum

Localization

Localization Comment Organism GeneOntology No. Textmining
soluble
-
Petroselinum crispum
-
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
50000
-
gel filtration Petroselinum crispum

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
UDP-glucose + 3',4',5,7-tetrahydroxyflavone Petroselinum crispum involved in biosynthesis of flavone glucosides UDP + 7-O-beta-D-glucosyl-3',4',5,7-tetrahydroxyflavone
-
?

Organism

Organism UniProt Comment Textmining
Petroselinum crispum
-
-
-

Purification (Commentary)

Purification (Comment) Organism
partial Petroselinum crispum

Source Tissue

Source Tissue Comment Organism Textmining
cell suspension culture extractable activity is drastically increased by illuminating the cells with white light and the maximum activity is reached 24 h after the onset of illumination Petroselinum crispum
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.401
-
-
Petroselinum crispum

Storage Stability

Storage Stability Organism
3°C, t1/2: 1 month in 0.05 M Tris-HCl buffer, pH 7.5, 7 mM 2-mercaptoethanol Petroselinum crispum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
TDP-glucose + luteolin
-
Petroselinum crispum TDP + 7-O-beta-D-glucosylluteolin
-
?
UDP-alpha-D-glucose + 3,7,4'-trihydroxyflavone 9% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosyl-3,7,4'-trihydroxyflavone
-
?
UDP-alpha-D-glucose + 5,7-dihydroxyflavanone 15% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosyl-5,7-dihydroxyflavanone
-
?
UDP-alpha-D-glucose + 7,4'-dihydroxyflavone 20% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosyl-7,4'-dihydroxyflavone
-
?
UDP-alpha-D-glucose + acacetin 24% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosylacacetin
-
?
UDP-alpha-D-glucose + apigenin
-
Petroselinum crispum UDP + 7-O-beta-D-glucosylapigenin
-
?
UDP-alpha-D-glucose + chrysoeriol 63% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosylchrysoeriol
-
?
UDP-alpha-D-glucose + datiscetin 9% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosyldatiscetin
-
?
UDP-alpha-D-glucose + fisetin 14% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosylfisetin
-
?
UDP-alpha-D-glucose + galangin 9% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosylgalangin
-
?
UDP-alpha-D-glucose + kaempferid 16% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosylkaempferid
-
?
UDP-alpha-D-glucose + kaempferol 11% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosylkaempferol
-
?
UDP-alpha-D-glucose + luteolin 210% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosylluteolin
-
?
UDP-alpha-D-glucose + naringenin 45% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosylnaringenin
-
?
UDP-alpha-D-glucose + quercetin 16% of the activity with apigenin Petroselinum crispum UDP + 7-O-beta-D-glucosylquercetin
-
?
UDP-glucose + 3',4',5,7-tetrahydroxyflavone involved in biosynthesis of flavone glucosides Petroselinum crispum UDP + 7-O-beta-D-glucosyl-3',4',5,7-tetrahydroxyflavone
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5
-
-
Petroselinum crispum

pH Range

pH Minimum pH Maximum Comment Organism
6 9 pH 6.0: about 35% of maximal activity, pH 9.0: about 50% of maximal activity Petroselinum crispum

pH Stability

pH Stability pH Stability Maximum Comment Organism
6.5
-
rapid loss of activity below Petroselinum crispum
7.5 8.5 most stable Petroselinum crispum
9.5
-
above, rapid loss of activity above Petroselinum crispum