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Literature summary for 3.2.1.37 extracted from

  • Oguntimein, G.A.; Reilly, P.J.
    Properties of soluble and immobilized Aspergillus niger beta-xylosidase (1980), Biotechnol. Bioeng., 22, 1143-1154.
No PubMed abstract available
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KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.2
-
 o-nitrophenyl beta-D-xylopyranoside soluble beta-xylosidase I Aspergillus niger
0.26
-
 o-nitrophenyl beta-D-xylopyranoside immobilized beta-xylosidase II Aspergillus niger

Organism

Organism UniProt Comment Textmining
Aspergillus niger
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
cell culture
-
 Aspergillus niger
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
o-nitrophenyl beta-D-xylopyranoside + H2O
-
 Aspergillus niger o-nitrophenol + beta-D-xylopyranose
-
 ?
p-nitrophenyl beta-D-xylopyranoside + H2O
-
 Aspergillus niger p-nitrophenol + beta-D-xylopyranose
-
 ?

Synonyms

Synonyms Comment Organism
beta-xylosidase I soluble form Aspergillus niger
beta-xylosidase II immobilized on silica or alumina Aspergillus niger

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
65
-
 highly stable at pH 4.0, immobilized beta-xylosidase II 10 times more stable Aspergillus niger

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
3
-
 both, soluble and immobilized forms Aspergillus niger

pH Stability

pH Stability pH Stability Maximum Comment Organism
4
-
 soluble beat-xylosidase I, highly stable up to, immobilized beta-xylosidase II 10 times more stable Aspergillus niger