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Literature summary for 3.2.1.21 extracted from

  • Deshpande, V.; Erikson, K.E.
    1,4-beta-glucosidases of Sporotrichum pulverulentum (1988), Methods Enzymol., 160, 415-424.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
D-glucono-1,5-lactone competitive inhibition, Ki: 0.0004 mM for enzyme A, Ki: 0.0015 mM for enzyme B, Ki: 0.12 mM for cell wall bound enzyme Sporotrichum pulverulentum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.002
-
4-nitrophenyl-beta-D-glucopyranoside cell wall bound enzyme Sporotrichum pulverulentum
0.15
-
4-nitrophenyl-beta-D-glucopyranoside for enzyme A Sporotrichum pulverulentum
0.21
-
4-nitrophenyl-beta-D-glucopyranoside for enzyme B Sporotrichum pulverulentum
3.7
-
cellobiose for enzyme B Sporotrichum pulverulentum
4.5
-
cellobiose for enzyme A Sporotrichum pulverulentum

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular high extracellular activities, if cellulose serves as carbon source Sporotrichum pulverulentum
-
-
membrane cell bound activity if cellobiose dominating in the medium Sporotrichum pulverulentum 16020
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
165000 182000 gel filtration, five different forms in culture filtrate Sporotrichum pulverulentum

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
4-O-beta-D-glucopyranosyl-D-glucose + H2O Sporotrichum pulverulentum cellobiose beta-D-glucose + D-glucose
-
?

Organism

Organism UniProt Comment Textmining
Sporotrichum pulverulentum
-
-
-

Purification (Commentary)

Purification (Comment) Organism
to homogeneity, five different extracellular forms, chromatography steps Sporotrichum pulverulentum

Source Tissue

Source Tissue Comment Organism Textmining
cell culture five different forms in culture filtrate, 1 form cell-wall bound Sporotrichum pulverulentum
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
79 102 5 different forms from culture filtrate Sporotrichum pulverulentum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
4-nitrophenyl beta-D-glucopyranoside + H2O
-
Sporotrichum pulverulentum 4-nitrophenol + D-glucopyranose
-
?
4-O-beta-D-glucopyranosyl-D-glucose + H2O cellobiose Sporotrichum pulverulentum beta-D-glucose + D-glucose
-
?
cellobiose + H2O
-
Sporotrichum pulverulentum 2 beta-D-glucose
-
?

Synonyms

Synonyms Comment Organism
1,4-beta-glucosidase
-
Sporotrichum pulverulentum