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3.2.1.153: fructan beta-(2,1)-fructosidase

This is an abbreviated version!
For detailed information about fructan beta-(2,1)-fructosidase, go to the full flat file.

Word Map on EC 3.2.1.153

Reaction

1,1,1,1-kestohexaose
+
H2O
=
1,1,1-kestopentaose
 +
beta-D-fructofuranose

Synonyms

1-FEH, 1-FEH I, 1-FEH II, 1-FEH IIa, 1-FEH w1, 1-FEH w2, 1-FEH2a, 1-FEH2b, 1-FEHa, 1-FEHI, 1-FEHw1, 1-fructan exohydrolase, 1-fructoexohydrolase, beta-(2-1) fructan exohydrolase, beta-(2-1)-D-fructan fructohydrolase, beta-(2-1)-linkage specific FEH, beta-(2-1)-linkage specific fructan-beta-fructosidase, beta-(2-1)-linkage-specific fructan-beta-fructosidase, Ci1-FEH I, Ci1-FEH IIa, Ci1-FEH IIb, FEH, fructan 1-exohydrolase, fructan 1-exohydrolase I, fructan 1-exohydrolase IIa, fructan 1-exohydrolase IIb, fructan 1-exohydrolase w1, fructan 1-exohydrolase w2, fructan exohydrolase, fructanexohydrolase, Lp1-FEH, Lp1-FEHa, Wfh-sm3m

ECTree

     3 Hydrolases
         3.2 Glycosylases
             3.2.1 Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
                3.2.1.153 fructan beta-(2,1)-fructosidase

Expression

Expression on EC 3.2.1.153 - fructan beta-(2,1)-fructosidase

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EXPRESSION
ORGANISM
UNIPROT
LITERATURE
CiMYB3 and CiMYB5 selectively enhance promoter activities of 1-FEH1, 1-FEH2a, and 1-FEH2b genes, without affecting promoter activities of fructosyltransferase genes. Both factors recognize the MYB-core motifs (C/TNGTTA/G) that are abundantly present in 1-FEH promoters. In chicory hairy root cultures CiMYB5 and CiMYB3 act as positive regulators of the fructan degradation pathway. Expression of 1-FEH1 is potently induced by abscisic acid, iodoacetic acid, and jasmonic acid. Cold exposure caused a substantial upregulation of transcript levels of 1-FEH1 across different plant organs
CiMYB3 and CiMYB5 selectively enhance promoter activities of 1-FEH1, 1-FEH2a, and 1-FEH2b genes, without affecting promoter activities of fructosyltransferase genes. Both factors recognize the MYB-core motifs (C/TNGTTA/G) that are abundantly present in 1-FEH promoters. In chicory hairy root cultures CiMYB5 and CiMYB3 act as positive regulators of the fructan degradation pathway. Expression of 1-FEH2a is slightly induced by abscisic acid and iodoacetic acid, and more potently induced by jasmonic acid. Cold exposure causes a substantial upregulation of transcript levels of 1-FEH1 across different plant organs
CiMYB3 and CiMYB5 selectively enhance promoter activities of 1-FEH1, 1-FEH2a, and 1-FEH2b genes, without affecting promoter activities of fructosyltransferase genes. Both factors recognize the MYB-core motifs (C/TNGTTA/G) that are abundantly present in 1-FEH promoters. In chicory hairy root cultures CiMYB5 and CiMYB3 act as positive regulators of the fructan degradation pathway. Expression of 1-FEH2b is slightly induced by abscisic acid and iodoacetic acid, and more potently induced by jasmonic acid. Cold exposure causes a substantial upregulation of transcript levels of 1-FEH1 across different plant organs
expression of 1-FEH1 is reduced by zeatin
expression of 1-FEH2a is reduced by zeatin
expression of 1-FEH2b is reduced by zeatin
expression of FEHs following phytohormone treatments, overview. Expression levels of the enzymes involved in fructan breakdown, are determined following pulse treatments with abscisic acid (ABA), auxin (AUX), ethylene (ET), gibberellic acid (GA), or kinetin (KIN) reveals a minor is effect evident for 1-FEH activity with an increased activity in response to KIN and a decrease by GA. LpFEH expression levels are increased 48 h following ET treatment, but this increase is significant only for Lp6-FEH
expression of isozyme 1-FEH I is induced by cold stress (12 h at 4°C)
expression of isozyme 1-FEH IIa is induced by cold stress (12 h at 4°C)
several R2R3-MYB transcriptional regulators are analysed for their possible involvement in 1-FEH regulation via transient transactivation of 1-FEH target promoters and for in vivo co-expression with target genes under different stress and hormone treatments, overview
storage at low temperature (5°C) enhances enzyme gene expression and activity
the profile of water-soluble carbohydrate accumulation and loss is negatively correlated with the mRNA concentration of 1-FEH, especially 1-FEH w3 (1-FEH-6B)
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