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Literature summary for 3.2.1.4 extracted from

  • Hayashida, S.; Yoshioka, H.
    Production and purification of thermostable cellulases from Humicola insolens YH-8 (1980), Agric. Biol. Chem., 44, 1721-1728 .
No PubMed abstract available

Organism

Organism UniProt Comment Textmining
Humicola insolens
-
-
-
Humicola insolens YH-8
-
-
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
17.3
-
avicelase activity, pH 5.5, 50°C Humicola insolens
39.2
-
carboxymethylcellulase activity, pH 5.5, 50°C Humicola insolens

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
avicel + H2O
-
Humicola insolens D-glucose + ?
-
?
avicel + H2O
-
Humicola insolens YH-8 D-glucose + ?
-
?
carboxymethyl cellulose + H2O
-
Humicola insolens D-glucose + ?
-
?
carboxymethyl cellulose + H2O
-
Humicola insolens YH-8 D-glucose + ?
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
50
-
both carboxymethycellulase and avicelase acitivity Humicola insolens

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
50
-
carboxymethycellulase and avicelase activity, stable for 24 h Humicola insolens
65
-
avicelase activity, stable for 5 min Humicola insolens
70
-
carboxymethylcellulase activity, 5 min, 95% residual activity Humicola insolens
75
-
avicelase activity, 20% residual activity Humicola insolens
95
-
carboxymethylcellulase activity, 5 min, 45% residual activity Humicola insolens

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5
-
carboxymethycellulase activity Humicola insolens
5.3
-
avicelase activity Humicola insolens

pH Stability

pH Stability pH Stability Maximum Comment Organism
3.5 9.5 carboxymethycellulase and avicelase acitivity Humicola insolens

Expression

Organism Comment Expression
Humicola insolens highest expression at 50°C when cultivated on wheat bran up