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Literature summary extracted from

  • Melgar, M.J.; Cabezas, J.A.; Calvo, P.
    Kinetic studies on beta-D-fucosidase of Littorina littorea L. (1985), Comp. Biochem. Physiol. B, 80, 149-156.
No PubMed abstract available

Activating Compound

EC Number Activating Compound Comment Organism Structure
3.2.1.38 beta-D-fucose activation at high concentrations, inhibition of beta-D-galactosidase and beta-D-glucosidase activity Littorina littorea
3.2.1.38 beta-D-galactose activation at high concentrations, inhibition of beta-D-galactosidase activity Littorina littorea
3.2.1.38 beta-D-glucose activation at high concentrations, inhibition of beta-D-galactosidase activity Littorina littorea

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.2.1.38 beta-D-fucose competitive inhibitor Littorina littorea
3.2.1.38 beta-D-galactose non-competitive inhibition Littorina littorea
3.2.1.38 beta-D-glucose competitive inhibition Littorina littorea

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.2.1.38 0.29
-
p-nitrophenyl-beta-D-fucoside
-
Littorina littorea
3.2.1.38 0.39
-
p-nitrophenyl-beta-D-glucoside
-
Littorina littorea
3.2.1.38 2.22
-
p-nitrophenyl-beta-D-galactoside
-
Littorina littorea

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.38 Littorina littorea
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.38 to homogeneity by several chromatography steps Littorina littorea

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.2.1.38 digestive gland
-
Littorina littorea
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.38 p-nitrophenyl-beta-D-fucoside + H2O common active site for beta-D-fucosidase and beta-D-glucosidase, transglycosylation activity, independent active site for beta-D-galactosidase Littorina littorea p-nitrophenol + beta-D-fucose
-
?
3.2.1.38 p-nitrophenyl-beta-D-galactoside + H2O low activity Littorina littorea p-nitrophenol + beta-D-galactose
-
?
3.2.1.38 p-nitrophenyl-beta-D-glucoside + H2O
-
Littorina littorea p-nitrophenol + beta-D-glucose
-
?

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.38 5.5
-
-
Littorina littorea