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Literature summary for 3.2.1.136 extracted from

  • Nishitani, K.; Nevins, D.J.
    Glucuronoxylan xylanohydrolase. A unique xylanase with the requirement for appendant glucuronosyl units (1991), J. Biol. Chem., 266, 6539-6543.
    View publication on PubMed
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KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
 additional information Km-values: 5 mg/ml (Vigna angularis xylan, derivative with reduced hemiacetal at reducing end), 6.9 mg/ml (maize xylan derivative with reduced hemiacetal at reducing end) Bacillus subtilis

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
additional information Bacillus subtilis the enzyme recognizes glucuronic acid side chains along the xylan main chain and mediates the hydrolysis of the beta-1,4-xylosyl linkages of the adjacent unsubstituted xylosyl residues ?
-
 ?

Organism

Organism UniProt Comment Textmining
Bacillus subtilis
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-
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Source Tissue

Source Tissue Comment Organism Textmining
commercial preparation industrial amylase preparation, Novo Ban L-120 Bacillus subtilis
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Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
maize xylan + H2O i.e. heteroxylan with glucuronic acid side chain, enzyme recognizes glucuronic acid side chains along the xylan main chain and mediates hydrolysis of beta-1,4-xylosyl linkages of adjacent unsubstituted xylosyl residues, endo-type hydrolase, possible recognition sites Bacillus subtilis ?
-
 ?
additional information the enzyme recognizes glucuronic acid side chains along the xylan main chain and mediates the hydrolysis of the beta-1,4-xylosyl linkages of the adjacent unsubstituted xylosyl residues Bacillus subtilis ?
-
 ?
additional information no substrates are xylan derivatives whose glucuronic acid residues have been converted to glucose, beta-1,4-xylan Bacillus subtilis additional information no products are xylohomooligomers ?
additional information no substrates are xylan derivatives whose glucuronic acid residues have been converted to glucose, beta-1,4-xylan Bacillus subtilis additional information structural analysis of products of maize xylan: sugar composition and glycosidic linkage composition of xylan fragments ?
Vigna angularis xylan + H2O i.e. heteroxylan with glucuronic acid side chain Bacillus subtilis ?
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 ?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
35
-
 assay at Bacillus subtilis