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Literature summary for 3.2.1.4 extracted from

  • Li, X.; Yu, H.Y.
    Characterization of a halostable endoglucanase with organic solvent-tolerant property from Haloarcula sp. G10 (2013), Int. J. Biol. Macromol., 62, 101-106.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
Benzene enhances enzyme activity Haloarcula sp.
n-hexane enhances enzyme activity Haloarcula sp.

Application

Application Comment Organism
biotechnology considering its thermostable, alkali-stable, halostable and organic solvent-tolerant properties, the enzyme might be potentially useful for future applications in biotechnological processes Haloarcula sp.

General Stability

General Stability Organism
halostable, the enzyme retains more than 80% activity after incubation with 10–30% NaCl for 24 h Haloarcula sp.

Inhibitors

Inhibitors Comment Organism Structure
diethyl dicarbonate 10 mM, 17.6% residual activity Haloarcula sp.
EDTA 10 mM, 11.2% residual activity Haloarcula sp.
Hg2+ 5 mM, 58% inhibition Haloarcula sp.
phenylmethylsulfonyl fluoride 10 mM, 18.1% residual activity Haloarcula sp.
SDS 10 mM, 49.2% residual activity Haloarcula sp.

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
cellulose Km-value for carboxymethylcellulose-Na as substrate is 3.01 mg/ml Haloarcula sp.

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular
-
Haloarcula sp.
-
-

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ 5 mM, 1.3fold stimulation Haloarcula sp.
Mg2+ 5 mM, 1.5fold stimulation Haloarcula sp.
NaCl optimal activity at 17.5% NaCl Haloarcula sp.

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
36000
-
gel filtration Haloarcula sp.

Organic Solvent Stability

Organic Solvent Comment Organism
1-butanol decreases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
1-decanol increases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
Acetone decreases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
acetonitrile decreases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
benzene increases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
chloroform no effect on stability Haloarcula sp.
cyclohexane increases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
DMSO decreases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
Ethanol decreases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
isooctane increases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
Methanol decreases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
additional information high activity and stability in the presence of non-polar hydrophobic organic solvents Haloarcula sp.
n-hexane increases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
phenylmethylsulfonyl fluoride decreases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.
toluene increases stability of the enzyme as compared to activity in the absence of organic solvents Haloarcula sp.

Organism

Organism UniProt Comment Textmining
Haloarcula sp.
-
-
-
Haloarcula sp. G10
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Haloarcula sp.

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
71.2
-
pH 9.0, 50°C Haloarcula sp.

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
cellulose + H2O
-
Haloarcula sp. ?
-
?
cellulose + H2O
-
Haloarcula sp. G10 ?
-
?

Subunits

Subunits Comment Organism
monomer 1 * 36000, SDS-PAGE Haloarcula sp.

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
60
-
-
Haloarcula sp.

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
20 80 20°C: about 40% of maximal activity, 80°C: about 80% of maximal activity Haloarcula sp.

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
80
-
24 h incubation, enzyme retains more than 60% activity Haloarcula sp.
90
-
24 h incubation, complete loss of activity Haloarcula sp.

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
9
-
-
Haloarcula sp.

pH Range

pH Minimum pH Maximum Comment Organism
6 11 pH 6.0: about 80% of maximal activity, pH 11: about 70% of maximal activity Haloarcula sp.

pH Stability

pH Stability pH Stability Maximum Comment Organism
7 11 good stability in the pH range from7.0–11.0 Haloarcula sp.