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Literature summary for 3.2.1.21 extracted from

  • Hirayama, T.; Horie, S.; Nagayama, H.; Matsuda, K.
    Studies on cellulases of a phytopathogenic fungus, Pyricularia oryzae Cavara. II. Purification and properties of a beta-glucosidase (1978), J. Biochem., 84, 27-37.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Cu2+ nearly complete inhibition at 1 mM Pyricularia oryzae
D-glucono-1,5-lactone competitive inhibition, Ki: 0.007 mM Pyricularia oryzae
Hg2+ complete inhibition at 1 mM Pyricularia oryzae
Mn2+ 59% inhibition at 1 mM Pyricularia oryzae
p-chloromercuribenzoic acid strong inhibition at 1 mM Pyricularia oryzae

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.19
-
laminaritetraose
-
Pyricularia oryzae
0.26
-
cellotetraose
-
Pyricularia oryzae
0.34
-
cellotriose
-
Pyricularia oryzae
0.42
-
laminaritriose
-
Pyricularia oryzae
0.56
-
gentiobiose
-
Pyricularia oryzae
0.83
-
laminaribiose
-
Pyricularia oryzae
0.91
-
cellobiose
-
Pyricularia oryzae
1
-
Salicin
-
Pyricularia oryzae
1.33
-
sophorose
-
Pyricularia oryzae
1.43
-
2-nitrophenyl-beta-D-glucoside
-
Pyricularia oryzae
10
-
methyl-beta-D-glucoside
-
Pyricularia oryzae

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular
-
Pyricularia oryzae
-
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
240000
-
SDS-PAGE Pyricularia oryzae

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2-O-beta-D-glucopyranosyl-D-glucopyranose + H2O Pyricularia oryzae sophorose beta-D-glucose + D-glucose
-
?
3-O-beta-D-glucopyranosyl-D-glucopyranose + H2O Pyricularia oryzae laminaribiose beta-D-glucose + D-glucose
-
?
4-O-beta-D-glucopyranosyl-D-glucose + H2O Pyricularia oryzae cellobiose beta-D-glucose + D-glucose
-
?
6-O-beta-D-glucopyranosyl-D-glucose + H2O Pyricularia oryzae gentiobiose beta-D-glucose + D-glucose
-
?
cellotetraose + 3 H2O Pyricularia oryzae
-
4 D-glucose
-
?
cellotriose + 2 H2O Pyricularia oryzae
-
3 D-glucose
-
?
laminaritetraose + 3 H2O Pyricularia oryzae
-
4 D-glucose
-
?

Organism

Organism UniProt Comment Textmining
Pyricularia oryzae
-
-
-

Posttranslational Modification

Posttranslational Modification Comment Organism
glycoprotein
-
Pyricularia oryzae

Purification (Commentary)

Purification (Comment) Organism
to homogeneity, chromatography techniques, isoform GB-1 Pyricularia oryzae

Source Tissue

Source Tissue Comment Organism Textmining
cell culture 3 isoforms, isoform Gb-1 most strongly induced by growth in cellulose medium Pyricularia oryzae
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.04
-
-
Pyricularia oryzae

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
(2-hydroxymethylphenyl)-beta-D-glucopyranoside + H2O salicin Pyricularia oryzae 2-hydroxymethylphenol + beta-D-glucose
-
?
2-nitrophenyl beta-D-glucopyranoside + H2O
-
Pyricularia oryzae 2-nitrophenol + D-glucopyranose
-
?
2-O-beta-D-glucopyranosyl-D-glucopyranose + H2O sophorose Pyricularia oryzae beta-D-glucose + D-glucose
-
?
3-O-beta-D-glucopyranosyl-D-glucopyranose + H2O laminaribiose Pyricularia oryzae beta-D-glucose + D-glucose
-
?
4-O-beta-D-glucopyranosyl-D-glucose + H2O cellobiose Pyricularia oryzae beta-D-glucose + D-glucose
-
?
6-O-beta-D-glucopyranosyl-D-glucose + H2O gentiobiose Pyricularia oryzae beta-D-glucose + D-glucose
-
?
cellobiose + H2O
-
Pyricularia oryzae 2 beta-D-glucose
-
?
cellotetraose + 3 H2O
-
Pyricularia oryzae 4 D-glucose
-
?
cellotriose + 2 H2O
-
Pyricularia oryzae 3 D-glucose
-
?
CM-cellulose + H2O low activity Pyricularia oryzae beta-D-glucose + ?
-
?
gentiobiose + H2O
-
Pyricularia oryzae 2 beta-D-glucose
-
?
laminaran + H2O
-
Pyricularia oryzae beta-D-glucose + ?
-
?
laminaribiose + H2O
-
Pyricularia oryzae 2 beta-D-glucose
-
?
laminaritetraose + 3 H2O
-
Pyricularia oryzae 4 D-glucose
-
?
laminaritriose + H2O
-
Pyricularia oryzae beta-D-glucose + laminaribiose
-
?
methyl-beta-D-glucoside + H2O
-
Pyricularia oryzae beta-D-glucose + methanol
-
?
pustulan + H2O
-
Pyricularia oryzae beta-D-glucose + ?
-
?
zeagallan + H2O
-
Pyricularia oryzae beta-D-glucose + ?
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
55
-
-
Pyricularia oryzae

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
50
-
stable up to Pyricularia oryzae

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
-
Pyricularia oryzae