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Information on EC 3.1.1.72 - acetylxylan esterase and Organism(s) Fibrobacter succinogenes and UniProt Accession Q9F106
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3.1.1.72 acetylxylan esteraseIUBMB Comments
Catalyses the hydrolysis of acetyl groups from polymeric xylan, acetylated xylose, acetylated glucose, alpha-napthyl acetate, p-nitrophenyl acetate but not from triacetylglycerol. Does not act on acetylated mannan or pectin.
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Word Map
- 3.1.1.72
- xylans
- cellulase
- wheat
- biomass
- xylose
- aspergillus
- trichoderma
- pulp
- straw
-
lignocellulosic
- bran
- xylooligosaccharides
-
cellulolytic
- endoglucanase
-
xylanolytic
- rumen
- pectinase
- reesei
- bagasse
- arabinoxylans
-
saccharification
-
birchwood
- lignin
- xylotriose
- laccase
- cmcase
- spelt
-
digesta
-
hemicellulases
- stover
- avicel
-
cellulose-binding
- phytase
- beta-xylosidase
- cellulosome
- thermomyces
- naphthol
- thermocellum
- mannanase
-
lignocellulolytic
- cellobiohydrolase
-
feruloylated
-
fibrolytic
-
kraft
- lanuginosus
-
delignification
- degradation
-
carbohydrase
- synthesis
- medicine
- biofuel production
- cellulomonas
- beta-glucanase
- analysis
- cellobiase
The taxonomic range for the selected organisms is: Fibrobacter succinogenes
The expected taxonomic range for this enzyme is: Bacteria, Eukaryota
The expected taxonomic range for this enzyme is: Bacteria, Eukaryota
Synonyms
xylanase, chloroacetate esterase, acetyl xylan esterase, acetyl esterase, xyn10b, acetylxylan esterase, axe ii, axe i, acetyl xylan esterase 1, c-esterase, 
more
topSYNONYM 
ORGANISM
UNIPROT
COMMENTARY 
LITERATURE
Acetic ester hydrolase
-
-
-
-
Acetyl esterase
-
-
-
-
Acetylglucomannan esterase
-
-
-
-
Acetylnaphthylesterase
-
-
-
-
Acetyte esterase
-
-
-
-
C-esterase
-
-
-
-
Chloroacetate esterase
-
-
-
-
Chloroesterase
-
-
-
-
Citrus acetylesterase
-
-
-
-
Esterase, acetyl
-
-
-
-
Esterase, C-
-
-
-
-
Heroin esterase
-
-
-
-
N-Acetylphosphinothricin deacetylase
-
-
-
-
Naphthal AS-D chloroacetate deacetylase
-
-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
hydrolysis of carboxylic ester
-
-
-
-
SYSTEMATIC NAME
IUBMB Comments
acetylxylan esterase
Catalyses the hydrolysis of acetyl groups from polymeric xylan, acetylated xylose, acetylated glucose, alpha-napthyl acetate, p-nitrophenyl acetate but not from triacetylglycerol. Does not act on acetylated mannan or pectin.
CAS REGISTRY NUMBER
COMMENTARY
188959-24-2
-
9000-82-2
-
SUBSTRATE
PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
acetylated birch-wood xylan + H2O
acetate + birch-wood xylan
-
5.6% of the activity with alpha-naphthyl acetate, acetylxylan esterase Axe6A
-
-
?
acetylated birch-wood xylan + H2O
acetate + birch-wood xylan
-
5.8% of the activity with alpha-naphthyl acetate, acetylxylan esterase Axe6B
-
-
?
alpha-naphthyl propionate + H2O
1-naphthol + propionate
-
14.6% of the activity with alpha-naphthyl acetate, acetylxylan esterase Axe6B
-
-
?
alpha-naphthyl propionate + H2O
1-naphthol + propionate
-
15.2% of the activity with alpha-naphthyl acetate, acetylxylan esterase Axe6A
-
-
?
beta-naphthyl propionate + H2O
2-naphthol + propionate
-
41.6% of the activity with alpha-naphthyl acetate, acetylxylan esterase Axe6A
-
-
?
beta-naphthyl propionate + H2O
2-naphthol + propionate
-
57.3% of the activity with alpha-naphthyl acetate, acetylxylan esterase Axe6B
-
-
?
D-glucose pentaacetate + H2O
?
-
10.0% of the activity with alpha-naphthyl acetate, acetylxylan esterase Axe6B
-
-
?
D-glucose pentaacetate + H2O
?
-
10.3% of the activity with alpha-naphthyl acetate, acetylxylan esterase Axe6A
-
-
?
D-xylose tetraacetate + H2O
?
-
10.3% of the activity with alpha-naphthyl acetate, acetylxylan esterase Axe6A
-
-
?
D-xylose tetraacetate + H2O
?
-
5.0% of the activity with alpha-naphthyl acetate, acetylxylan esterase Axe6B
-
-
?
additional information
?
-
-
not active with carboxymethylcellulose, larchwood xylan, ferrulic acid-arabinose-xylose polymer, p-nitrophenyl-alpha-L-arabinofuranoside, longer-chain fatty acid esters
-
-
?
additional information
?
-
-
the enzyme may play a role in enhancing hemicellulose degradation
-
-
?
additional information
?
-
-
the action of xylanase on acetylated xylan is dependent upon the initial activity of acetylxylan esterase Axe6A
-
-
?
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
additional information
?
-
-
the enzyme may play a role in enhancing hemicellulose degradation
-
-
?
additional information
?
-
-
the action of xylanase on acetylated xylan is dependent upon the initial activity of acetylxylan esterase Axe6A
-
-
?
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
IMAGE
additional information
-
Exe6B is not inhibited by 10 mM Ca2+, acetylxylan esterase Axe6B
-
additional information
-
unaffected by Mn2+, Co2+, Ca2+, Mg2+ and EDTA at 10 mM, acetylxylan esterase Axe6A
-
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
IMAGE
0.056
Alpha-naphthyl acetate
-
pH 6.5, 37°C, acetylxylan esterase Axe6B
0.084
Alpha-naphthyl acetate
-
pH 6.5, 37°C, acetylxylan esterase Axe6A
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
pH RANGE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
6 - 8.5
-
pH 6.0: about 70% of maximal activity, pH 8.5: about 60% of maximal activity
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
40
TEMPERATURE RANGE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
20 - 50
-
20°C: about 60% of maximal activity, 50°C: about 90% of maximal activity
pI VALUE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
SOURCE
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY
GeneOntology No.
LITERATURE
SOURCE
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
58600
-
x * 58600, calculated from sequence, acetylxylan esterase Axe6A
60500
-
x * 60500, calculated from sequence, acetylxylan esterase Axe6B
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
McDermid, K.P.; Forsberg, C.W.; MacKenzie, C.R.
Purification and properties of an acetylxylan esterase from Fibrobacter succinogenes S85
Appl. Environ. Microbiol.
56
3805-3810
1990
Fibrobacter succinogenes, Fibrobacter succinogenes S85
Kam, D.K.; Jun, H.S.; Ha, J.K.; Inglis, G.D.; Forsberg, C.W.
Characteristics of adjacent family 6 acetylxylan esterases from Fibrobacter succinogenes and the interaction with the Xyn10E xylanase in hydrolysis of acetylated xylan
Can. J. Microbiol.
51
821-832
2005
Fibrobacter succinogenes, Fibrobacter succinogenes S85
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