Deglycosylated Isopullulanase Retains Enzymatic Activity.
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- Padmajanti Anastasia
- Department of Applied Biological Science, Faculty of Agriculture, Tokyo University of Agriculture and Technology
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- Tonozuka Takashi
- Department of Applied Biological Science, Faculty of Agriculture, Tokyo University of Agriculture and Technology
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- Sakano Yoshiyuki
- Department of Applied Biological Science, Faculty of Agriculture, Tokyo University of Agriculture and Technology
Bibliographic Information
- Other Title
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- 糖鎖を除去したイソプルラナーゼは酵素活性を保っている
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Abstract
Isopullulanase (IPU) from Aspergillus niger ATCC 9642 is a cell-bound glycoprotein that hydrolyzes pullulan into isopanose. The sugar content of the recombinant enzyme expressed in Aspergillus oryzae M-2-3 decreased from 33.8 to 2.1% by 13 h-treatment with endoglycosidase H (Endo H), and deglycosylated rec-IPU had 65% of the original activity. 3 Deg-IPU (prepared by 3 h-treatment of Endo H; 6.8% sugar) showed the same substrate specificities, optimum pH and optimum temperature as native IPU and rec-IPU, while its kinetic parameters, ko and ko/Km values for pullulan, and Km, ko and ko/Km values for panose decreased with deglycosylation, except Km for pullulan. The oligosaccharide chains of rec-IPU were typed using lectin-peroxidase reagents and classified as hybrid- and/or high-mannose types.
Journal
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- Journal of Applied Glycoscience
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Journal of Applied Glycoscience 47 (3/4), 287-292, 2000
The Japanese Society of Applied Glycoscience
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Details 詳細情報について
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- CRID
- 1390001206292560896
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- NII Article ID
- 10008252053
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- NII Book ID
- AN10453916
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- COI
- 1:CAS:528:DC%2BD3cXmvVahsr0%3D
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- ISSN
- 18807291
- 13447882
- http://id.crossref.org/issn/13447882
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- NDL BIB ID
- 5521363
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed