Found 2 structures.
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1. Compound ID: 26096
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b-D-Galp-(1-6)-+
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-3)-b-D-Galp-(1-3)-b-D-Galp-(1-3)-b-D-Galp-(1-3)-b-D-Galp-(1-3)-b-D-Galp-(1-3)-b-D-Galp-(1- |
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Structure type: polymer chemical repeating unit
Contained glycoepitopes: IEDB_136044,IEDB_137472,IEDB_141794,IEDB_153201,IEDB_156493,IEDB_156494,IEDB_190606,SB_165,SB_166,SB_187,SB_195,SB_7,SB_88
The structure is contained in the following publication(s):
- Article ID: 10571
Pellerin P, Brillouet JM "Purification and properties of an exo-(1-3)-β-D-galactanase from Aspergillus niger" -
Carbohydrate Research 264 (1994) 281-291
An exo-(1→3)-β-d-galactanase was purified by six chromatographic steps from a culture supernatant of Aspergillus niger. Its apparent molecular mass was 66 kDa, as estimated by SDS-PAGE analysis. The purified enzyme had no detectable activity on various p-nitrophenyl glycosides and on native plant polysaccharides but exhibited a high activity on a (1→3)-β-d-linked galactan backbone obtained after partial acid hydrolysis and two Smith degradations of gum arabic. The optimum conditions were pH 4.5 and 40–50°C. The enzyme had a Michaelis constant (Km) of 1.9 mg/mL for the β-(1→3)-d-galactan with a maximum reaction velocity (Vmax) of 1380 nkat/mg. The study of the reaction products obtained after enzyme treatment of two galactans derived from gum arabic through one or two Smith degradations showed that it was an exo-(1→3)-β-d-galactanase able to by-pass the branching points of galactan backbones and thus to release the side-chains of type II arabinogalactans in an undegraded form.
arabinogalactan, Galactan, Aspergillus niger, galactanase, polysaccharide hydrolase
NCBI PubMed ID: 7805066Publication DOI: 10.1016/S0008-6215(05)80012-6Journal NLM ID: 0043535Publisher: Elsevier
Institutions: Institut National de la Recherche Agronomique, Laboratoire des Polymères et des Techniques Physico-Chimiques, Montpellier, France
Methods: gel filtration, GC-MS, acid hydrolysis, HPAEC, enzymatic digestion
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2. Compound ID: 26097
Structure type: oligomer
Contained glycoepitopes: IEDB_136044,IEDB_136906,IEDB_136907,IEDB_137472,IEDB_141794,IEDB_151528,IEDB_153201,IEDB_156493,IEDB_156497,IEDB_190606,SB_165,SB_166,SB_187,SB_195,SB_7,SB_88
The structure is contained in the following publication(s):
- Article ID: 10571
Pellerin P, Brillouet JM "Purification and properties of an exo-(1-3)-β-D-galactanase from Aspergillus niger" -
Carbohydrate Research 264 (1994) 281-291
An exo-(1→3)-β-d-galactanase was purified by six chromatographic steps from a culture supernatant of Aspergillus niger. Its apparent molecular mass was 66 kDa, as estimated by SDS-PAGE analysis. The purified enzyme had no detectable activity on various p-nitrophenyl glycosides and on native plant polysaccharides but exhibited a high activity on a (1→3)-β-d-linked galactan backbone obtained after partial acid hydrolysis and two Smith degradations of gum arabic. The optimum conditions were pH 4.5 and 40–50°C. The enzyme had a Michaelis constant (Km) of 1.9 mg/mL for the β-(1→3)-d-galactan with a maximum reaction velocity (Vmax) of 1380 nkat/mg. The study of the reaction products obtained after enzyme treatment of two galactans derived from gum arabic through one or two Smith degradations showed that it was an exo-(1→3)-β-d-galactanase able to by-pass the branching points of galactan backbones and thus to release the side-chains of type II arabinogalactans in an undegraded form.
arabinogalactan, Galactan, Aspergillus niger, galactanase, polysaccharide hydrolase
NCBI PubMed ID: 7805066Publication DOI: 10.1016/S0008-6215(05)80012-6Journal NLM ID: 0043535Publisher: Elsevier
Institutions: Institut National de la Recherche Agronomique, Laboratoire des Polymères et des Techniques Physico-Chimiques, Montpellier, France
Methods: gel filtration, GC-MS, acid hydrolysis, HPAEC, enzymatic digestion
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