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Literature summary for 3.2.1.38 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
Search for more literature for 3.2.1.38

Activating Compound

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

Inhibitors

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

KM Value [mM]

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

Organism

Organism UniProt Comment Textmining
Littorina littorea
-
-
-

Purification (Commentary)

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

Source Tissue

Source Tissue Comment Organism Textmining
digestive gland
-
 Littorina littorea
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
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
-
 ?
p-nitrophenyl-beta-D-galactoside + H2O low activity Littorina littorea p-nitrophenol + beta-D-galactose
-
 ?
p-nitrophenyl-beta-D-glucoside + H2O
-
 Littorina littorea p-nitrophenol + beta-D-glucose
-
 ?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
-
 Littorina littorea