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Literature summary for 3.2.1.21 extracted from

  • Shepherd, M.G.; Cole, A.L.; Tong, C.C.
    Cellulases from Thermoascus aurantiacus (1988), Methods Enzymol., 160, 300-307.
No PubMed abstract available

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.52
-
4-nitrophenyl-beta-D-glucopyranoside
-
Thermoascus aurantiacus

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular
-
Thermoascus aurantiacus
-
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
85000
-
gel filtration, SDS-PAGE Thermoascus aurantiacus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
xylan + H2O Thermoascus aurantiacus
-
beta-D-glucose + ?
-
?

Organism

Organism UniProt Comment Textmining
Thermoascus aurantiacus
-
-
-

Posttranslational Modification

Posttranslational Modification Comment Organism
glycoprotein 33% carbohydrate content, w/w Thermoascus aurantiacus

Purification (Commentary)

Purification (Comment) Organism
to homogeneity, chromatography steps Thermoascus aurantiacus

Source Tissue

Source Tissue Comment Organism Textmining
cell culture
-
Thermoascus aurantiacus
-

Storage Stability

Storage Stability Organism
-20°C, 1 year Thermoascus aurantiacus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
4-nitrophenyl beta-D-glucopyranoside + H2O
-
Thermoascus aurantiacus 4-nitrophenol + D-glucopyranose
-
?
xylan + H2O
-
Thermoascus aurantiacus beta-D-glucose + ?
-
?

Subunits

Subunits Comment Organism
monomer 1 * 85000, SDS-PAGE Thermoascus aurantiacus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
70
-
-
Thermoascus aurantiacus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
70
-
totally stable up to, retaining 70% of its activity after 1 h incubation at 75°C Thermoascus aurantiacus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
4.5 5
-
Thermoascus aurantiacus

pH Stability

pH Stability pH Stability Maximum Comment Organism
6 8 stable within Thermoascus aurantiacus