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Literature summary for 3.2.1.153 extracted from

  • Marx, S.P.; Nosberger, J.; Frehner, M.
    Seasonal variation of fructan-beta-fructosidase (FEH) activity and characterization of a beta-(2-1)-linkage specific FEH from tubers of Jerusalem artichoke (Helianthus tuberosus) (1997), New Phytol., 135, 267-277.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
sucrose inhibition by sucrose is a mechanism for controlling fructan degradation in plants Helianthus tuberosus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
8.3
-
1,1-kestotetraose
-
Helianthus tuberosus
12
-
1,1,1-kestopentaose
-
Helianthus tuberosus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
75000
-
gel filtration Helianthus tuberosus

Organism

Organism UniProt Comment Textmining
Helianthus tuberosus
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Helianthus tuberosus

Source Tissue

Source Tissue Comment Organism Textmining
tuber activity is low in growing tubers but increases during dormancy and sprouting Helianthus tuberosus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1,1,1-kestopentaose + H2O
-
Helianthus tuberosus ?
-
?
1,1-kestotetraose + H2O
-
Helianthus tuberosus ?
-
?
inulin + H2O multichain mechanism Helianthus tuberosus fructose + ?
-
?
additional information the enzyme hydrolyzes terminal beta-(2-1)-fructosylfructose-linkages in linear and branched fructan oligomers. beta-(2-6)-linkages are hardly hydrolyzed Helianthus tuberosus ?
-
?

Subunits

Subunits Comment Organism
monomer 1 * 75000, SDS-PAGE Helianthus tuberosus

Synonyms

Synonyms Comment Organism
1-FEH II
-
Helianthus tuberosus
1-FEH w1
-
Helianthus tuberosus
1-fructan exohydrolase
-
Helianthus tuberosus
beta-(2-1) fructan exohydrolase
-
Helianthus tuberosus
beta-(2-1)-D-fructan fructohydrolase
-
Helianthus tuberosus
beta-(2-1)-linkage specific FEH
-
Helianthus tuberosus
beta-(2-1)-linkage specific fructan-beta-fructosidase
-
Helianthus tuberosus
beta-(2-1)-linkage-specific fructan-beta-fructosidase
-
Helianthus tuberosus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
40
-
1 h, enzyme retains full activity Helianthus tuberosus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.2
-
-
Helianthus tuberosus