Purification and Characterization of Aspergillus ficuum Endoinulinase.
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- UHM Tai-Boong
- Faculty of Biological Sciences and Institute for Molecular Biology and Genetics, Chonbuk National University
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- CHUNG Mi Sun
- Department of Food Science and Technology, Chonbuk National University
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- LEE Sun Hee
- Department of Food Science and Technology, Chonbuk National University
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- GOURRONC Françoise
- Laboratoire de Biochimie, Université de Reims, UFR Sciences
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- HOUSEN Isabelle
- Laboratoire de Génétique Moléculaire, Facultés Universitaires
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- KIM Jong Hwa
- Department of Food Science and Engineering, Woo Suk University
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- BEEUMEN Josef Van
- Laboratorium voor Eiwitbiochimie en Eiwitengineering, University of Gent
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- HAYE Bernard
- Laboratoire de Biochimie, Université de Reims, UFR Sciences
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- VANDENHAUTE Jean
- Laboratoire de Génétique Moléculaire, Facultés Universitaires
Bibliographic Information
- Other Title
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- Purification and Characterization of<i>Aspergillus ficuum</i>Endoinulinase
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Abstract
Endoinulinase from Aspergillus ficuum, which catalyzes the hydrolysis of inulin via an endo-cleavage mode, was purified by chromatography from Novozym 230 as a starting commercial enzyme mixture on CM-Sephadex and DEAE-Sepharose, and by preparative electrophoresis under native conditions. The enzyme was estimated to be pure on the basis of its I/S ratio, whose value was infinite in our assay conditions. Two forms separated by using this method. SDS gel electrophoresis showed the two purified forms to respectively exhibit molecular weights of 64,000±500 and 66,000±1,000. The results of deglycosylation indicated that the two forms were originally the same protein but with different sugar contents. A molecular weight of 54,800±1,500 was found by gel filtration of the native enzyme, indicating the native functional protein to be a monomer. The enzyme showed nearly absolute substrate specificity towards inulin and inulooligosaccharides, and acted via an endo-attack to produce mainly inulotriose during the late stage of the reaction. The apparent Km and Vmax values for inulin hydrolysis were 8.1±1.0 mM and 773±60 U/mg, respectively. The internal peptides of the enzyme showed sequence homology to the endoinulinase of Penicillium purpurogenum.<br>
Journal
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 63 (1), 146-151, 1999
Japan Society for Bioscience, Biotechnology, and Agrochemistry
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Keywords
Details 詳細情報について
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- CRID
- 1390282681451101312
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- NII Article ID
- 110002679355
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- NII Book ID
- AA10824164
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- COI
- 1:CAS:528:DyaK1MXhtVCku7s%3D
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- ISSN
- 13476947
- 09168451
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- NDL BIB ID
- 4653616
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- PubMed
- 10052135
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed