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Literature summary for 3.2.1.39 extracted from

  • Vijayendra, S.V.; Kashiwagi, Y.
    Characterization of a new acid stable exo-beta-1,3-glucanase of Rhizoctonia solani and its action on microbial polysaccharides (2009), Int. J. Biol. Macromol., 44, 92-97.
    View publication on PubMed

General Stability

General Stability Organism
The enzyme purified is found to be highly stable between 30 and 40°C for 1 h in citrate-phosphate buffer (pH 7.0) Rhizoctonia solani

Inhibitors

Inhibitors Comment Organism Structure
2-mercaptoethanol 1 mM concentration, activity loss 49% Rhizoctonia solani
EDTA 1 mM concentration, activity loss 28% Rhizoctonia solani
additional information cobalt and ferric ions do not inhibit enzyme activity, ions of magnesium, zinc, copper, calcium, nickel and manganese show a remaining activity between 65 and 90% Rhizoctonia solani

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
Laminarin the apparent KM for the purified enzyme is 0.78 mg/ml Rhizoctonia solani

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
62000
-
SDS-PAGE Rhizoctonia solani

Organism

Organism UniProt Comment Textmining
Rhizoctonia solani
-
-
-

Purification (Commentary)

Purification (Comment) Organism
ammonium sulfate precipitation, ion-exchange and gel filtration Rhizoctonia solani

Source Tissue

Source Tissue Comment Organism Textmining
commercial preparation
-
Rhizoctonia solani
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.26
-
more specific for compounds having beta-1,3-glucosidic linkages Rhizoctonia solani

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
curdlan + H2O
-
Rhizoctonia solani D-glucose + laminaritriose + laminaribiose
-
?
laminarin + H2O more specific for compounds having beta-1,3-glucosidic linkages Rhizoctonia solani D-glucose + laminaribiose
-
?
laminaripentaose + H2O more specific for compounds having beta-1,3-glucosidic linkages Rhizoctonia solani D-glucose + laminaritriose + laminaribiose
-
?
laminaritetraose + H2O more specific for compounds having beta-1,3-glucosidic linkages Rhizoctonia solani D-glucose + ?
-
?
laminaritriose + H2O more specific for compounds having beta-1,3-glucosidic linkages Rhizoctonia solani D-glucose + ?
-
?
additional information enzyme does not hydrolyze beta-1,4 linkages present in cellooligosaccharides such as cellobiose, cellotriose, cellotetraose and cellopentaose Rhizoctonia solani ?
-
?

Synonyms

Synonyms Comment Organism
exo-beta-1,3-glucanase
-
Rhizoctonia solani

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
40
-
-
Rhizoctonia solani

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
30 60
-
Rhizoctonia solani

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
60
-
enzyme completely becomes inactive beyond 60°C Rhizoctonia solani

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5
-
-
Rhizoctonia solani

pH Range

pH Minimum pH Maximum Comment Organism
3 7
-
Rhizoctonia solani

pH Stability

pH Stability pH Stability Maximum Comment Organism
3 7 more than 90% activity is retained after 20 h of incubation at 25°C Rhizoctonia solani

pI Value

Organism Comment pI Value Maximum pI Value
Rhizoctonia solani
-
-
4.5