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Literature summary for 2.4.1.19 extracted from

  • Kitayska, T.; Petrova, P.; Ivanova, V.; Tonkova, A.I.
    Purification and properties of a new thermostable cyclodextrin glucanotransferase from Bacillus pseudalcaliphilus 8SB (2011), Appl. Biochem. Biotechnol., 165, 1285-1295.
    View publication on PubMed

Application

Application Comment Organism
synthesis enzyme achieves 50.7% conversion of raw corn starch into 81.6% beta- and 18.4% gamma-cyclodextrins after 24 h enzyme reaction at 60°C and pH 8.0 Alkalihalobacillus pseudalcaliphilus

Inhibitors

Inhibitors Comment Organism Structure
Ag+ 5 mM, 71% of initial activity Alkalihalobacillus pseudalcaliphilus
Cu2+ 5 mM, 82% of initial activity Alkalihalobacillus pseudalcaliphilus
Fe2+ 5 mM, 93% of initial activity Alkalihalobacillus pseudalcaliphilus
Zn2+ 5 mM, 84% of initial activity Alkalihalobacillus pseudalcaliphilus

Metals/Ions

Metals/Ions Comment Organism Structure
(NH4)6Mo7O24 5 mM, 115% of initial activity Alkalihalobacillus pseudalcaliphilus
Ca2+ 5 mM, 120% of initial activity Alkalihalobacillus pseudalcaliphilus
K+ 5 mM, 110% of initial activity Alkalihalobacillus pseudalcaliphilus
Na+ 5 mM, 120% of initial activity Alkalihalobacillus pseudalcaliphilus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
71000
-
PAGE Alkalihalobacillus pseudalcaliphilus

Organism

Organism UniProt Comment Textmining
Alkalihalobacillus pseudalcaliphilus
-
-
-
Alkalihalobacillus pseudalcaliphilus 8SB
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Alkalihalobacillus pseudalcaliphilus

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
92.3
-
pH 8.0, 60°C Alkalihalobacillus pseudalcaliphilus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
raw corn starch
-
Alkalihalobacillus pseudalcaliphilus beta-cyclodextrin + gamma-cyclodextrin ratio of beta- to gamma-cyclodextrin products is about 4:1 ?
raw corn starch
-
Alkalihalobacillus pseudalcaliphilus 8SB beta-cyclodextrin + gamma-cyclodextrin ratio of beta- to gamma-cyclodextrin products is about 4:1 ?

Subunits

Subunits Comment Organism
monomer 1 * 71000, SDS-PAGE Alkalihalobacillus pseudalcaliphilus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
60
-
-
Alkalihalobacillus pseudalcaliphilus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
40
-
2 h, no loss of activity Alkalihalobacillus pseudalcaliphilus
60
-
2 h, almost no loss of activity Alkalihalobacillus pseudalcaliphilus
70
-
half-life 2 h, presence of 5 mM Ca2+ Alkalihalobacillus pseudalcaliphilus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6
-
and 8.0 Alkalihalobacillus pseudalcaliphilus
8
-
and 6.0 Alkalihalobacillus pseudalcaliphilus

pH Range

pH Minimum pH Maximum Comment Organism
5 11 more than 80% of maximum activity Alkalihalobacillus pseudalcaliphilus