Any feedback?
Please rate this page
(literature.php)
(0/150)

BRENDA support

Literature summary for 3.2.1.20 extracted from

  • Berthelot, K.; Delmotte, F.M.
    Purification and characterization of an alpha-glucosidase from Rhizobium sp. (Robinia pseudoacacia L.) strain USDA 4280 (1999), Appl. Environ. Microbiol., 65, 2907-2911.
    View publication on PubMedView publication on EuropePMC

Activating Compound

Activating Compound Comment Organism Structure
NH4+ activates Rhizobium sp.

Inhibitors

Inhibitors Comment Organism Structure
acetosyringone
-
Rhizobium sp.
Ag+
-
Rhizobium sp.
Ca2+ 10 mM, slight inhibition Rhizobium sp.
Co2+ 10 mM, slight inhibition Rhizobium sp.
Cu2+
-
Rhizobium sp.
dithiothreitol 50 mM Rhizobium sp.
Fe2+
-
Rhizobium sp.
Fe3+
-
Rhizobium sp.
Hg2+
-
Rhizobium sp.
Li+ 10 mM, slight inhibition Rhizobium sp.
Mg2+ 10 mM, slight inhibition Rhizobium sp.
Mn2+ 10 mM, slight inhibition Rhizobium sp.
SDS 0.1% Rhizobium sp.
Tris
-
Rhizobium sp.
Urea 4 M Rhizobium sp.
Zn2+ 10 mM, slight inhibition Rhizobium sp.

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.037
-
4-nitrophenyl alpha-D-glucoside
-
Rhizobium sp.
0.141
-
4-methylumbelliferyl-alpha-glucoside
-
Rhizobium sp.

Metals/Ions

Metals/Ions Comment Organism Structure
K+ stimulates Rhizobium sp.

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
59000
-
gel filtration Rhizobium sp.

Organism

Organism UniProt Comment Textmining
Rhizobium sp.
-
-
-
Rhizobium sp. USDA 4280
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Rhizobium sp.

Source Tissue

Source Tissue Comment Organism Textmining
seed
-
Rhizobium sp.
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
5.72
-
-
Rhizobium sp.

Storage Stability

Storage Stability Organism
-20°C, stable for months Rhizobium sp.
4°C, stable for several weeks Rhizobium sp.

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
4-methylumbelliferyl-alpha-glucoside + H2O
-
Rhizobium sp. 4-methylumbelliferone + alpha-D-glucose
-
?
4-methylumbelliferyl-alpha-glucoside + H2O
-
Rhizobium sp. USDA 4280 4-methylumbelliferone + alpha-D-glucose
-
?
4-nitrophenyl alpha-D-glucoside
-
Rhizobium sp. 4-nitrophenol + alpha-D-glucose
-
?
4-nitrophenyl alpha-D-glucoside
-
Rhizobium sp. USDA 4280 4-nitrophenol + alpha-D-glucose
-
?
maltose + H2O
-
Rhizobium sp. alpha-D-glucose + D-glucose
-
?
maltose + H2O
-
Rhizobium sp. USDA 4280 alpha-D-glucose + D-glucose
-
?
sucrose + H2O
-
Rhizobium sp. D-fructose + alpha-D-glucose
-
?
sucrose + H2O
-
Rhizobium sp. USDA 4280 D-fructose + alpha-D-glucose
-
?
trehalose + H2O
-
Rhizobium sp. alpha-D-glucose
-
?
trehalose + H2O
-
Rhizobium sp. USDA 4280 alpha-D-glucose
-
?

Subunits

Subunits Comment Organism
monomer 1 * 59000, SDS-PAGE und reducing and under nonreducing conditions Rhizobium sp.

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
35
-
-
Rhizobium sp.

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
15 50 15°C: about 35% of maximal activity, 50°C: about 25% of maximal activity Rhizobium sp.

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6 6.5
-
Rhizobium sp.