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Literature summary for 3.2.1.132 extracted from

  • Chiang, C.L.; Chang, C.T.; Sung, H.Y.
    Purification and properties of chitosanase from a mutant of Bacillus subtilis IMR-NK1 (2003), Enzyme Microb. Technol., 32, 260-267.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
Hg2+
-
Bacillus subtilis
N-bromosuccinimide
-
Bacillus subtilis
p-hydroxymercuribenzoic acid
-
Bacillus subtilis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
36000
-
gel filtration Bacillus subtilis
41000
-
1 * 41000, SDS-PAGE Bacillus subtilis

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
chitosan + H2O Bacillus subtilis
-
?
-
?
chitosan + H2O Bacillus subtilis IMR-NK1
-
?
-
?

Organism

Organism UniProt Comment Textmining
Bacillus subtilis
-
IMR-NK1
-
Bacillus subtilis IMR-NK1
-
IMR-NK1
-

Purification (Commentary)

Purification (Comment) Organism
-
Bacillus subtilis

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2819
-
after DEAE-Sephacel ion exchange chromatography Bacillus subtilis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
chitosan + H2O
-
Bacillus subtilis ?
-
?
chitosan + H2O
-
Bacillus subtilis IMR-NK1 ?
-
?
chitosan + H2O degrades 60-94% deacetylated chitosan most effectively Bacillus subtilis additional information end products of chitosan hydrolysis are chitobiose, chitotetraose and some chitooligosaccharides with a longer chain length ?
chitosan + H2O degrades 60-94% deacetylated chitosan most effectively Bacillus subtilis IMR-NK1 additional information end products of chitosan hydrolysis are chitobiose, chitotetraose and some chitooligosaccharides with a longer chain length ?
colloidal chitin + H2O
-
Bacillus subtilis ?
-
?
colloidal chitin + H2O
-
Bacillus subtilis IMR-NK1 ?
-
?
glycol chitosan + H2O
-
Bacillus subtilis ?
-
?
glycol chitosan + H2O
-
Bacillus subtilis IMR-NK1 ?
-
?

Subunits

Subunits Comment Organism
monomer 1 * 41000, SDS-PAGE Bacillus subtilis

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
45
-
-
Bacillus subtilis

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
30
-
rather stable for 20 min Bacillus subtilis
40
-
rather stable for 20 min Bacillus subtilis
45
-
gradual inactivation of the enzyme Bacillus subtilis
50
-
gradual inactivation of the enzyme Bacillus subtilis
55
-
significant loss in activity Bacillus subtilis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
4
-
-
Bacillus subtilis

pH Stability

pH Stability pH Stability Maximum Comment Organism
5 9 stable at 25°C for 1 h Bacillus subtilis