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Literature summary for 3.2.1.25 extracted from

  • Sone, Y.; Misaki, A.
    Purification and characterization of beta-D-mannosidase and beta-N-acetyl-D-hexosaminidase of Tremella fuciformis (1978), J. Biochem., 83, 1135-1144.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
EDTA 11% stimulation at 5 mM Tremella fuciformis

Inhibitors

Inhibitors Comment Organism Structure
Ag+ AgNO3 Tremella fuciformis
Ca2+ 5 mM Ca(NO3)2, 45% inhibition Tremella fuciformis
Cd2+ CdCl2 Tremella fuciformis
Hg2+ HgCl2 Tremella fuciformis
PCMB
-
Tremella fuciformis
Zn2+ 10 mM ZnSO4, 30% inhibition Tremella fuciformis

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.1
-
p-nitrophenyl-beta-D-mannoside
-
Tremella fuciformis

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ Ca(NO3)2, 22% stimulation at 0.5 mM Tremella fuciformis
MgSO4 26% stimulation at 10 mM Tremella fuciformis
ZnSO4 0.5 mM, 25% stimulation Tremella fuciformis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
140000
-
gel filtration Tremella fuciformis

Organism

Organism UniProt Comment Textmining
Tremella fuciformis
-
-
-

Oxidation Stability

Oxidation Stability Organism
tends to be inactived by oxygen, dithiothreitol reactivates Tremella fuciformis

Purification (Commentary)

Purification (Comment) Organism
-
Tremella fuciformis

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
20
-
-
Tremella fuciformis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
beta1-4-mannobiose + H2O
-
Tremella fuciformis ?
-
?
beta1-4-mannobiose + H2O
-
Tremella fuciformis T-7 ?
-
?
Man-(beta1-4)GlcNAc + H2O
-
Tremella fuciformis mannose + GlcNAc
-
?
Man-(beta1-4)GlcNAc + H2O
-
Tremella fuciformis T-7 mannose + GlcNAc
-
?
mannotriose + H2O beta1-4-D-mannotriose Tremella fuciformis ?
-
?
mannotriose + H2O beta1-4-D-mannotriose Tremella fuciformis T-7 ?
-
?
p-nitrophenyl-beta-D-mannoside + H2O
-
Tremella fuciformis p-nitrophenol + alpha-D-mannose
-
?
p-nitrophenyl-beta-D-mannoside + H2O
-
Tremella fuciformis T-7 p-nitrophenol + alpha-D-mannose
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5
-
-
Tremella fuciformis

pH Stability

pH Stability pH Stability Maximum Comment Organism
3.5
-
rapid loss of activity Tremella fuciformis
5 5.5 37°C, 1 h, stable Tremella fuciformis