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Literature summary for 3.2.1.55 extracted from

  • Pei, J.; Shao, W.
    Purification and characterization of an extracellular alpha-L-arabinosidase from a novel isolate Bacillus pumilus ARA and its over-expression in Escherichia coli (2008), Appl. Microbiol. Biotechnol., 78, 115-121.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
overexpression in Escherichia coli Bacillus pumilus

Inhibitors

Inhibitors Comment Organism Structure
Cu2+ 1 mM, 15% inhibition Bacillus pumilus
Hg2+ 1 mM, complete inhibition Bacillus pumilus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.05
-
p-nitrophenyl alpha-L-arabinofuranoside
-
Bacillus pumilus

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular
-
Bacillus pumilus
-
-

Metals/Ions

Metals/Ions Comment Organism Structure
Mn2+ 1 mM, 1.8fold activation Bacillus pumilus

Organism

Organism UniProt Comment Textmining
Bacillus pumilus Q2MJP5
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Bacillus pumilus

Source Tissue

Source Tissue Comment Organism Textmining
culture medium
-
Bacillus pumilus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information the enzyme releases arabinose from oat spelt xylan. No activity is detected with 4-nitrophenyl beta-D-glucopyranoside, 4-nitrophenyl alpha-D-xylopyranoside, and 4-nitrophenyl beta-D-xylopyranoside Bacillus pumilus ?
-
?
p-nitrophenyl alpha-L-arabinofuranoside + H2O
-
Bacillus pumilus p-nitrophenol + L-arabinofuranose
-
?

Synonyms

Synonyms Comment Organism
AraB
-
Bacillus pumilus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
60
-
-
Bacillus pumilus

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
45 75 45°C: about 70% of maximal activity, 75°C: about 65% of maximal activity, substrate: p-nitrophenyl alpha-L-arabinofuranoside Bacillus pumilus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
70
-
half-ife: 1 h Bacillus pumilus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.4
-
substrate: p-nitrophenyl alpha-L-arabinofuranoside Bacillus pumilus

pH Range

pH Minimum pH Maximum Comment Organism
5.2 7.6 pH 5.2: about 60% of maximal activity, pH 7.6: about 60% of maximal activity, substrate: p-nitrophenyl alpha-L-arabinofuranoside Bacillus pumilus

pH Stability

pH Stability pH Stability Maximum Comment Organism
5.2 7.6 65°C, 1 h, stable Bacillus pumilus