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

BRENDA support

Literature summary for 3.2.1.132 extracted from

  • Fenton, D.M.; Everleigh, D.E.
    Purification and mode of action of a chitosanase from Penicillium islandicum (1981), J. Gen. Microbiol., 126, 151-165.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
Cu2+
-
Talaromyces islandicus
Hg2+
-
Talaromyces islandicus
Tetramers of N-acetylglucosamine
-
Talaromyces islandicus
Trimers of N-acetylglucosamine
-
Talaromyces islandicus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information 1.4 mg/ml: 5% or 30% acetylated chitosan Talaromyces islandicus

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular
-
Talaromyces islandicus
-
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
30000
-
gel filtration Talaromyces islandicus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
chitosan + H2O Talaromyces islandicus
-
?
-
?

Organism

Organism UniProt Comment Textmining
Talaromyces islandicus
-
-
-

Posttranslational Modification

Posttranslational Modification Comment Organism
additional information carbohydrate content is less than 0.5% Talaromyces islandicus

Purification (Commentary)

Purification (Comment) Organism
-
Talaromyces islandicus

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
10
-
after treatment with hydroxylapatite Talaromyces islandicus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
chitosan + H2O
-
Talaromyces islandicus ?
-
?
chitosan + H2O polymers with 30% to 60% acetylation Talaromyces islandicus additional information with 60% acetylated chitosan as substrate a dimer is also found ?
chitosan + H2O polymers with 30% to 60% acetylation Talaromyces islandicus additional information major oligomeric product from 30% acetylated chitosan is a trimer ?
chitosan + H2O polymers with 30% to 60% acetylation Talaromyces islandicus additional information the products depend on the degree of acetylation of the polymer ?
chitosan + H2O polymers containing equal proportions of acetylated and non-acetylated sugars are optimal for chitosanase activity Talaromyces islandicus additional information with 60% acetylated chitosan as substrate a dimer is also found ?
chitosan + H2O polymers containing equal proportions of acetylated and non-acetylated sugars are optimal for chitosanase activity Talaromyces islandicus additional information major oligomeric product from 30% acetylated chitosan is a trimer ?
chitosan + H2O polymers containing equal proportions of acetylated and non-acetylated sugars are optimal for chitosanase activity Talaromyces islandicus additional information the products depend on the degree of acetylation of the polymer ?
additional information no activity with chitin (i.e. 100% acetylated chitosan) Talaromyces islandicus ?
-
?
additional information slow cleavage of: pentamer of N-acetylglucosamine, glucosamine oligomers Talaromyces islandicus ?
-
?
additional information no activity with trimers or tetramers of N-acetylglucosamine, carboxymethylcellulose, dextran, galactan, polygalacturonic acid, laminaran, mucoran, pectin, pullulan, salicin, xylan, 4-nitrophenyl-beta-D-acetylglucosamine, 4-nitrophenyl-beta-D-glucosamine Talaromyces islandicus ?
-
?
additional information no activity with colloidal chitin Talaromyces islandicus ?
-
?

Subunits

Subunits Comment Organism
monomer
-
Talaromyces islandicus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
45
-
-
Talaromyces islandicus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
37
-
denaturation in 1-2 h, stabilized by 1.0 mM Ca2+ Talaromyces islandicus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
4.5 6 with 30% or 5% acetylated chitosan Talaromyces islandicus

pH Range

pH Minimum pH Maximum Comment Organism
4 6.5 rapid drop in activity below pH 4.0 and above pH 6.5 Talaromyces islandicus