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Literature summary for 2.4.1.13 extracted from

  • Avigad, G.; Milner, Y.
    UDP-Glucose:fructose transglucosylase from suger beet roots (1966), Methods Enzymol., 8, 341-345.
No PubMed abstract available

General Stability

General Stability Organism
2-mercaptoethanol stabilizes Beta vulgaris
EDTA, 0.1 mM, stabilizes Beta vulgaris
freeze-thawing inactivates Beta vulgaris
high salt concentrations inactivate Beta vulgaris
protamin sulfate stabilizes Beta vulgaris

Inhibitors

Inhibitors Comment Organism Structure
AMP
-
Beta vulgaris
ATP
-
Beta vulgaris
Cu2+ at 0.01 mM Beta vulgaris
Hg2+ at 0.01 mM Beta vulgaris
iodoacetic acid
-
Beta vulgaris
N-ethylmaleimide
-
Beta vulgaris
p-hydroxymercuribenzoate
-
Beta vulgaris
TDP
-
Beta vulgaris
UDP strong Beta vulgaris
UMP
-
Beta vulgaris
UTP
-
Beta vulgaris

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.061 0.094 UDP cosubstrate TDP, pH 6 Beta vulgaris
0.3 0.38 UDPglucose pH 7.2 Beta vulgaris
0.44 0.9 CDP pH 7.2 Beta vulgaris
2.08 3.1 fructose pH 7.2 Beta vulgaris
52 290 sucrose pH 6 Beta vulgaris

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol
-
Beta vulgaris 5829
-

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
UDP + sucrose Beta vulgaris
-
UDP-glucose + D-fructose
-
r

Organism

Organism UniProt Comment Textmining
Beta vulgaris
-
sugar beet
-

Purification (Commentary)

Purification (Comment) Organism
-
Beta vulgaris

Source Tissue

Source Tissue Comment Organism Textmining
root
-
Beta vulgaris
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.91
-
-
Beta vulgaris

Storage Stability

Storage Stability Organism
marked inactivation upon freezing and thawing Beta vulgaris

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ADP-glucose + D-fructose
-
Beta vulgaris ADP + sucrose
-
r
CDP-glucose + D-fructose
-
Beta vulgaris CDP + sucrose
-
?
additional information L-sorbose, 5-keto-D-fructose, D-tagatose, fructose 6-phosphate, levanbiose can replace fructose to a small extent, no glucosyl acceptors are D-xylulose, L-rhamnulose, D-glucoheptulose, D-mannoheptulose, turanose, inulobiose, melibiulose, lactulose, cellobiulose, 3,4-di-O-methylfructose, dihydroxyacetone, pyruvate Beta vulgaris ?
-
?
TDP-glucose + D-fructose
-
Beta vulgaris TDP + sucrose
-
r
UDP + sucrose
-
Beta vulgaris UDP-glucose + D-fructose
-
r
UDP + sucrose poor substrate: GDP Beta vulgaris UDP-glucose + D-fructose
-
?
UDP + sucrose also substrate: ADP Beta vulgaris UDP-glucose + D-fructose
-
?
UDP + sucrose CDP is poor substrate Beta vulgaris UDP-glucose + D-fructose
-
?
UDP + sucrose substrate: TDP Beta vulgaris UDP-glucose + D-fructose
-
?
UDPglucose + D-fructose
-
Beta vulgaris UDP + sucrose
-
r

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
37
-
t1/2: 5 h, pH 6.5 Beta vulgaris

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6 6.5 sucrose cleavage Beta vulgaris
7
-
sucrose synthesis Beta vulgaris

pH Stability

pH Stability pH Stability Maximum Comment Organism
6.5
-
t1/2: 5 h, 37°C Beta vulgaris
8
-
most stable Beta vulgaris