Purification and substrate specificity of a ginkgo biloba glycosidase active in β-1,2-xylosidic linkage in plant complex type n-glycans

Megumi Maeda, Tsuyoshi Akiyama, Daisuke Yokouchi, Kwan Kit Woo, Yoshinobu Kimura

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The β-xylosidase, which is active against plant complex type N-glycans, was purified to homogeneity from Ginkgo biloba seeds. The N-terminal amino acid sequence, G-S-A-A-G-N-R-, of the Ginkgo β-xylosidase (β-Xyl'ase Gb) was consistent with the deduced internal amino acid sequence of an Arabidopsis β-xylosidase (AtBXL1). β-Xyl'ase Gb hydrolyzed the β1-2 xylosyl residue from Xylβ1-2Manβ1-4GlcNAcβ1-4GlcNAc-PA and Xylβ1-2Manβ1-4GlcNAcβ1-4(Fucβ1-3)GlcNAc-PA, but not that from Manβ1-6(Manβ1-3)(Xylβ1-2)Manβ1- 4GlcNAcβ1- 4(Fucβ1-3)GlcNAc-PA.

Original languageEnglish
Pages (from-to)1973-1976
Number of pages4
JournalBioscience, Biotechnology and Biochemistry
Volume77
Issue number9
DOIs
Publication statusPublished - 2013

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Keywords

  • Β-xylosidase activity
  • Ginkgo biloba
  • N-glycan turnover
  • Plant N-glycan

ASJC Scopus subject areas

  • Biotechnology
  • Biochemistry
  • Molecular Biology
  • Applied Microbiology and Biotechnology
  • Analytical Chemistry
  • Organic Chemistry

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