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Literature summary for 3.2.1.8 extracted from

  • Tachaapaikoon, C.; Lee, Y.S.; Rantanakhanokchai, K.; Pinitglang, S.; Kyu, K.L.; Rho, M.S.; Lee, S.
    Purification and characterization of two endoxylanases from an alkaliphilic Bacillus halodurans C-1 (2006), J. Microbiol. Biotechnol., 16, 613-618.
No PubMed abstract available

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
23000
-
SDS-PAGE, Xyl I Halalkalibacterium halodurans
47000
-
SDS-PAGE, Xyl II Halalkalibacterium halodurans

Organism

Organism UniProt Comment Textmining
Halalkalibacterium halodurans
-
-
-
Halalkalibacterium halodurans C-1
-
-
-

Purification (Commentary)

Purification (Comment) Organism
DEAE-Toyopearl 650 M column chromatography, 16/10 DEAE fast-flow column chromatography, and Mono-Q HR 5/5 column chromatography Halalkalibacterium halodurans

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.5
-
crude enzyme, in 50 mM sodium phosphate buffer, pH 7.0 Halalkalibacterium halodurans
9.4
-
after 3.8fold purification, in 50 mM sodium phosphate buffer, pH 7.0, at 60°C Halalkalibacterium halodurans
19.8
-
after 7.9fold purification, in 50 mM sodium phosphate buffer, pH 7.0, at 70°C Halalkalibacterium halodurans

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information no activity toward p-nitrophenyl-beta-D-xyloside, p-nitrophenyl-beta-D-glucoside, p-nitrophenyl-alpha-L-arabinofuranoside, p-nitrophenyl-acetate, or carboxymethylcellulose Halalkalibacterium halodurans ?
-
?
additional information no activity toward p-nitrophenyl-beta-D-xyloside, p-nitrophenyl-beta-D-glucoside, p-nitrophenyl-alpha-L-arabinofuranoside, p-nitrophenyl-acetate, or carboxymethylcellulose Halalkalibacterium halodurans C-1 ?
-
?
xylan + H2O xylan from birchwood, oat spelt, and larchwood Halalkalibacterium halodurans additional information a series of xylooligosaccharides larger than xylotriose are released as the major products by Xyl I ?
xylan + H2O xylan from birchwood, oat spelt, and larchwood Halalkalibacterium halodurans C-1 additional information a series of xylooligosaccharides larger than xylotriose are released as the major products by Xyl I ?
xylan + H2O xylan from birchwood, oat spelt, and larchwood Halalkalibacterium halodurans xylobiose + xylotriose + ? main products ?
xylan + H2O xylan from birchwood, oat spelt, and larchwood Halalkalibacterium halodurans C-1 xylobiose + xylotriose + ? main products ?

Synonyms

Synonyms Comment Organism
endoxylanase
-
Halalkalibacterium halodurans
Xyl I
-
Halalkalibacterium halodurans
Xyl II
-
Halalkalibacterium halodurans
xylanase
-
Halalkalibacterium halodurans

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
60
-
-
Halalkalibacterium halodurans
70
-
-
Halalkalibacterium halodurans

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
60 70 stable up to 60°C, retains 30% of original activity after incubation at 70°C Halalkalibacterium halodurans
70 90 stable up to 70°C, 2% and 16% of the original activity are retained after incubation at 80°C and 90°C, respectively Halalkalibacterium halodurans

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5 9
-
Halalkalibacterium halodurans
7
-
-
Halalkalibacterium halodurans

pH Stability

pH Stability pH Stability Maximum Comment Organism
5 10
-
Halalkalibacterium halodurans
6 9
-
Halalkalibacterium halodurans