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Literature summary for 3.2.1.26 extracted from

  • Wang, L.T.; Wang, A.Y.; Hsieh, C.W.; Chen, C.Y.; Sung, H.Y.
    Vacuolar invertases in sweet potato: molecular cloning, characterization, and analysis of gene expression (2005), J. Agric. Food Chem., 53, 3672-3678.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
gene lbbetafruct2, DNA and amino acid sequence determination and analysis, expression of the His-tagged soluble, vacuolar isozyme in Pichia pastoris Ipomoea batatas
gene lbbetafruct3, DNA and amino acid sequence determination and analysis, expression of the His-tagged soluble, vacuolar isozyme in Pichia pastoris Ipomoea batatas

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
4.97
-
sucrose pH 5.0, recombinant isozyme lbbetafruct3 Ipomoea batatas
10.1
-
sucrose pH 5.0, recombinant isozyme lbbetafruct2 Ipomoea batatas

Localization

Localization Comment Organism GeneOntology No. Textmining
soluble vacuolar acid invertase Ipomoea batatas
-
-
vacuole acid invertase Ipomoea batatas 5773
-

Organism

Organism UniProt Comment Textmining
Ipomoea batatas Q94C05 isozyme lbbetafruct3; cv. Tainong 57
-
Ipomoea batatas Q94C06 isozyme lbbetafruct2; cv. Tainong 57
-

Posttranslational Modification

Posttranslational Modification Comment Organism
glycoprotein deglycosylation by PMGase F, the glycosylation of isozyme lbbetafruct2 differs in the different plant tissues and between native and recombinant enzyme, overview Ipomoea batatas
glycoprotein deglycosylation by PMGase F, the glycosylation of isozyme lbbetafruct3 differs in the different plant tissues and between native and recombinant enzyme, overview Ipomoea batatas

Purification (Commentary)

Purification (Comment) Organism
recombinant His-tagged soluble, vacuolar isozyme lbbetafruct3 5fold from Pichia pastoris by nickel affinity chromatography Ipomoea batatas
recombinant His-tagged soluble, vacuolar isozyme lbbetalbbetafruct2 7.6fold from Pichia pastoris by nickel affinity chromatography Ipomoea batatas

Source Tissue

Source Tissue Comment Organism Textmining
leaf young and mature, expression of isozyme lbbetafruct3 is restricted to shoots and leaves Ipomoea batatas
-
additional information isozyme lbbetafruct2 is expressed in most tissues, except for mature leaves and sprouting storage roots, exspecially in sink organs Ipomoea batatas
-
shoot expression of isozyme lbbetafruct3 is restricted to shoots and leaves Ipomoea batatas
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
70
-
purified recombinant isozyme lbbetafruct3 Ipomoea batatas
553
-
purified recombinant isozyme lbbetafruct2 Ipomoea batatas

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information activity with cellobiose, maltose, lactose, and inulin, by isozyme lbbetafruct2 Ipomoea batatas ?
-
?
additional information activity with cellobiose, maltose, lactose, and inulin, by isozyme lbbetafruct3 Ipomoea batatas ?
-
?
raffinose + H2O 25% of the activity with sucrose, recombinant isozyme lbbetafruct3 Ipomoea batatas alpha-D-galactosyl-1,6-alpha-D-glucose + D-fructose
-
?
raffinose + H2O 37% of the activity with sucrose, recombinant isozyme lbbetafruct2 Ipomoea batatas alpha-D-galactosyl-1,6-alpha-D-glucose + D-fructose
-
?
stachyose + H2O 13% of the activity with sucrose, recombinant isozyme lbbetafruct2 Ipomoea batatas ?
-
?
stachyose + H2O 9% of the activity with sucrose, recombinant isozyme lbbetafruct3 Ipomoea batatas ?
-
?
sucrose + H2O preferred substrate, recombinant isozyme lbbetafruct2 Ipomoea batatas D-glucose + D-fructose
-
?
sucrose + H2O preferred substrate, recombinant isozyme lbbetafruct3 Ipomoea batatas D-glucose + D-fructose
-
?

Subunits

Subunits Comment Organism
More analysis of conserved notifs and segments in the secondray structure of isozyme lbbetafruct2, overview Ipomoea batatas
More analysis of conserved notifs and segments in the secondray structure of isozyme lbbetafruct3, overview Ipomoea batatas

Synonyms

Synonyms Comment Organism
lbbetafruct2
-
Ipomoea batatas
lbbetafruct3
-
Ipomoea batatas
soluble acid invertase
-
Ipomoea batatas
Vacuolar invertase
-
Ipomoea batatas

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5
-
recombinant isozyme lbbetafruct2 Ipomoea batatas
5
-
recombinant isozyme lbbetafruct3 Ipomoea batatas