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Literature summary for 3.2.1.55 extracted from

  • Birgisson, H.; Fridjonsson, O.; Bahrani-Mougeot, F.K.; Hreggvidsson, G.O.; Kristjansson, J.K.; Mattiasson, B.
    A new thermostable alpha-L-arabinofuranosidase from a novel thermophilic bacterium (2004), Biotechnol. Lett., 26, 1347-1351.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expressed in Escherichia coli Thermomicrobia bacterium

Inhibitors

Inhibitors Comment Organism Structure
Ni2+ 2 mM, 55% activity inhibition Thermomicrobia bacterium
Zn2+ 2 mM, 100% activity inhibition Thermomicrobia bacterium

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.6
-
p-nitrophenyl-alpha-L-arabinofuranoside
-
Thermomicrobia bacterium

Metals/Ions

Metals/Ions Comment Organism Structure
additional information no effect of Mg2+, Ca2+, Mn2+ at 2 mM on AraF Thermomicrobia bacterium

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
350000
-
gel filtration Thermomicrobia bacterium

Organism

Organism UniProt Comment Textmining
Thermomicrobia bacterium
-
-
-

Purification (Commentary)

Purification (Comment) Organism
column chromatography Thermomicrobia bacterium

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.03
-
oat spelt xylan Thermomicrobia bacterium
0.06
-
arabinoxylan Thermomicrobia bacterium
0.5
-
debranched arabinan Thermomicrobia bacterium
0.6
-
branched arabinan Thermomicrobia bacterium

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
arabinoxylan + H2O
-
Thermomicrobia bacterium ?
-
?
branched arabinan + H2O
-
Thermomicrobia bacterium ?
-
?
debranched arabinan + H2O
-
Thermomicrobia bacterium ?
-
?
additional information no activity on arabinogalactan and gum arabic Thermomicrobia bacterium ?
-
?
oat spelt xylan + H2O
-
Thermomicrobia bacterium ?
-
?
p-nitrophenyl-alpha-L-arabinofuranoside + H2O
-
Thermomicrobia bacterium p-nitrophenol + alpha-L-arabinofuranose
-
?

Synonyms

Synonyms Comment Organism
alpha-L-arabinofuranosidase
-
Thermomicrobia bacterium
AraF
-
Thermomicrobia bacterium

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
70
-
-
Thermomicrobia bacterium

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
70
-
92% residual activity after 1h Thermomicrobia bacterium

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6
-
-
Thermomicrobia bacterium

pH Range

pH Minimum pH Maximum Comment Organism
3.5 8 more than 20% activity Thermomicrobia bacterium