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Literature summary for 3.2.1.3 extracted from

  • Niaz, M.; Ghafoor, M.Y.; Jabbar, A.; Wahid, A.; Rasul, E.; Ahmed, R.; Rashid, M.H.
    Properties of glucoamylase from a mesophilic fungus Arachniotus citrinus produced under solid-state growth condition (2004), Int. J. Biol. Biotechnol., 1, 223-231.
No PubMed abstract available

Application

Application Comment Organism
industry the enzyme can be useful in industrial processing and hydrolysis of starch Gymnascella citrina

General Stability

General Stability Organism
the purified enzyme is sensitive to proteolytic degradation by alpha-chymotrypsin, half-life 39 min Gymnascella citrina

Inhibitors

Inhibitors Comment Organism Structure
additional information the purified enzyme is sensitive to proteolytic degradation by alpha-chymotrypsin Gymnascella citrina

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.05
-
starch pH 3.5-5.5, 50°C Gymnascella citrina

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
starch + H2O Gymnascella citrina
-
starch + beta-D-glucose
-
?

Organism

Organism UniProt Comment Textmining
Gymnascella citrina
-
-
-

Purification (Commentary)

Purification (Comment) Organism
native enzyme 63fold to homogeneity by ammonium sulfate precipitation, anion exchange and hydrophobic interaction chromatography, and again anion exchange chromatography Gymnascella citrina

Source Tissue

Source Tissue Comment Organism Textmining
additional information solid-state culture on wheat bran Gymnascella citrina
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
starch + H2O
-
Gymnascella citrina starch + beta-D-glucose
-
?

Synonyms

Synonyms Comment Organism
exo-1,4-alpha-D-glucan glucanohydrolase
-
Gymnascella citrina
glucoamylase
-
Gymnascella citrina

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
35
-
at 0.39 mg/ml purified enzyme Gymnascella citrina
55
-
at 1 mg/ml purified enzyme Gymnascella citrina

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
55
-
half-life of purified enzyme is 7 min, irreversible inactivation Gymnascella citrina

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
8.3
-
starch pH 3.5-5.5, 50°C Gymnascella citrina

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
3.5 5.5
-
Gymnascella citrina