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Literature summary for 2.4.1.207 extracted from

  • Sulova, Z.; Baran, R.; Farkas, V.
    Divergent modes of action on xyloglucan of two isoenzymes of xyloglucan endo-transglycosylase from Tropaeolum majus (2003), Plant Physiol. Biochem., 41, 431-437.
No PubMed abstract available

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.017
-
rhodamin-conjugated Glc3-Xyl3-Gal2-glucitol isozyme eXET, pH 5.5, 30°C Tropaeolum majus
0.131
-
rhodamin-conjugated Glc3-Xyl3-Gal2-glucitol isozyme sXET, pH 5.5, 30°C Tropaeolum majus

Organism

Organism UniProt Comment Textmining
Tropaeolum majus
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2 isoenzymes, one of which is seed specific
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Purification (Commentary)

Purification (Comment) Organism
isozymes sXET and eXET from germinated seeds, i.e. cotyledons, and from epicotyls, respectively, to near homogeneity by ammonium sulfate fractionation, anion exchange chromatography, adsorption and desorption of the enzyme-substrate complex on cellulose, and hydrophobic-interaction chromatography Tropaeolum majus

Reaction

Reaction Comment Organism Reaction ID
2 Xylalpha(1-6)Glcbeta(1-4)(Xylalpha(1-6))Glcbeta(1-4))(Xylalpha(1-6))Glcbeta(1-4)(Xylalpha(1-6))Glcbeta(1-4)Glc = Xylalpha(1-6)Glcbeta(1-4)(Xylalpha(1-6))Glc + Xylalpha(1-6))Glcbeta(1-4)(Xylalpha(1-6))Glcbeta(1-4)Glcbeta(1-4)(Xylalpha(1-6))Glcbeta(1-4)(Xylalpha(1-6))Glcbeta(1-4))(Xylalpha(1-6))Glcbeta(1-4)(Xylalpha(1-6))Glcbeta(1-4)Glc determination of cleavage sites within the donor substrate of isozymes Tropaeolum majus

Source Tissue

Source Tissue Comment Organism Textmining
epicotyl isozyme eXET Tropaeolum majus
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additional information isozyme eXET also occurs in other growing regions Tropaeolum majus
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seed expression of isozyme sXET during germination Tropaeolum majus
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Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information isozymes sXET and eXET show different specificities for xyloglucan-derived oligosaccharide acceptor substrates, and distinct preferences in selecting the site of attack on xyloglucan molecules Tropaeolum majus ?
-
?
rhodamin-conjugated Glc3-Xyl3-Gal2-glucitol + xyloglucan acceptor substrate: rhodamin-conjugated reduced xyloglucan-derived nonasaccharide, donor substrate: tamarind-seed xyloglucan, fluorescence assay Tropaeolum majus ?
-
?

Synonyms

Synonyms Comment Organism
XET
-
Tropaeolum majus
xyloglucan endo-transglycosylase
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Tropaeolum majus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
assay at Tropaeolum majus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5 6 isozyme eXET Tropaeolum majus
5.5 8 isozyme sXET, broad optimum Tropaeolum majus

pH Range

pH Minimum pH Maximum Comment Organism
additional information
-
isozymes sXET and eXET show different pH-profiles Tropaeolum majus

pI Value

Organism Comment pI Value Maximum pI Value
Tropaeolum majus about, isozymes sXET and eXET, isoelectric focusing
-
6.6