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Literature summary extracted from

  • Gidda, S.K.; Varin, L.
    Biochemical and molecular characterization of flavonoid 7-sulfotransferase from Arabidopsis thaliana (2006), Plant Physiol. Biochem., 44, 628-636.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
2.8.2.28 additional information trans-zeatin induces AtST3a enzyme expression Arabidopsis thaliana

Cloned(Commentary)

EC Number Cloned (Comment) Organism
2.8.2.28 AtST3a, DNA and amino acid sequence determination and analysis, expression of the His-tagged enzyme in Escherichia coli strain XL-1 Blue Arabidopsis thaliana

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.8.2.28 0.001
-
adenosine 3'-phosphate 5'-phosphosulfate pH 7.5, 25°C, recombinant enzyme Arabidopsis thaliana
2.8.2.28 0.002
-
kaempferol 3-sulfate pH 7.5, 25°C, recombinant enzyme Arabidopsis thaliana

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + kaempferol 3-sulfate Arabidopsis thaliana
-
adenosine 3',5'-bisphosphate + kaempferol 3,7-bissulfate
-
?

Organism

EC Number Organism UniProt Comment Textmining
2.8.2.28 Arabidopsis thaliana
-
ecotype Col0
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.8.2.28 recombinant His-tagged AtST3a from Escherichia coli strain XL-1 Blue by nickel affinity and on 3'-phosphoadenosine 5'-phosphate affinity chromatography Arabidopsis thaliana

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.8.2.28 inflorescence stalk
-
Arabidopsis thaliana
-
2.8.2.28 additional information no expression in leaves of of 15-day-old plants, developmental expression pattern, the AtST3a transcript cannot be detected in extracts of wounded or etiolated plant material Arabidopsis thaliana
-
2.8.2.28 root root-specific expression of AtST3a in roots of 15-day-old plants Arabidopsis thaliana
-
2.8.2.28 seedling ST3a is expressed at early stages of seedling development Arabidopsis thaliana
-
2.8.2.28 silique
-
Arabidopsis thaliana
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.8.2.28 0.017
-
purified recombinant enzyme, substrate kaempferol 3-sulfate Arabidopsis thaliana

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + 3-hydroxyflavone
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + 4-oxo-2-phenyl-4H-chromen-3-yl hydrogen sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + 7-hydroxyflavone
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + 7-hydroxyflavone 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + apigenin
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + apigenin 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + apigenin 4'-sulfate
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + apigenin 4',7-bissulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + crysin
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + crysin 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + dihydroquercetin
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + dihydroquercetin 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + galangin
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + galangin 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + genistein
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + genistein 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + gossypetin
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + gossypetin 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + isorhamnetin
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + isorhamnetin 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + kaempferol
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + kaempferol 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + kaempferol 3-sulfate
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + kaempferol 3,7-bissulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + kaempferol 3-sulfate best substrate Arabidopsis thaliana adenosine 3',5'-bisphosphate + kaempferol 3,7-bissulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + myricetin
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + myricetin 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + quercetin
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + quercetin 7-sulfate
-
?
2.8.2.28 adenosine 3'-phosphate 5'-phosphosulfate + rhamnetin
-
Arabidopsis thaliana adenosine 3',5'-bisphosphate + ?
-
?
2.8.2.28 additional information substrate specificity, overview, no activity with quercetagetin, AtST3a isozyme exhibits strict specificity for position 7 of flavonoids, and accept as substrates a number of flavonols and flavone aglycones, as well as their monosulfate esters Arabidopsis thaliana ?
-
?

Synonyms

EC Number Synonyms Comment Organism
2.8.2.28 AtST3a
-
Arabidopsis thaliana
2.8.2.28 flavonoid 7-sulfotransferase
-
Arabidopsis thaliana
2.8.2.28 flavonol 7-ST
-
Arabidopsis thaliana

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
2.8.2.28 25
-
assay at Arabidopsis thaliana

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.8.2.28 7.5
-
-
Arabidopsis thaliana

pH Range

EC Number pH Minimum pH Maximum Comment Organism
2.8.2.28 6 10
-
Arabidopsis thaliana