Enzymes in Hepatopancreas of Abalone Active on a Sulfated Polysaccharide from Brown Seaweed <i>Undaria pinnatifida</i> (Harvey) Suringar, Wakame
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- FUJIKAWA Tatsuo
- Department of Food Science and Technology, Faculty of Agriculture, Kyushu University
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- ANNO Takahiko
- Department of Food Science and Technology, Faculty of Agriculture, Kyushu University Food Research Institute, Nippon Shinyaku Co., Ltd.
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- WADA Masafuto
- Department of Food Science and Technology, Faculty of Agriculture, Kyushu University
Bibliographic Information
- Other Title
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- フコイダンおよびフコイダン様多糖の研究 IV ワカメの硫酸多糖に作用するアワビ肝すい臓中の酵素
- ワカメ ノ リュウサン タトウ ニ サヨウスル アワビ カン スイゾウチュウ
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Abstract
In connection with the structural study of galactofucan sulfate (sulfated polysaccharide of Undaria pinnatifida, Wakame), galactofucanase and α-L-fucosidase existing in hepatopancreas of abalone (Haliotis sp.) were investigated.<br> In a crude mixture of enzymes prepared from hepatopancreas, galactofucan sulfatase, arylsulfatase, and β-D-galactosidase were detected bisides galactofucanase and α-L-fucosidase. From the crude mixture, two partially purified fractions (FS-1 and FS-2) were obtained by column chromatography on DEAE-cellulose followed by gel filtration on Sephadex G-200. FS-1 showed the α-L-fucosidase activity and was free from the activity of galactofucanase and galactofucan sulfatase. FS-2 showed four activities of galactofucanase, galactofucan sulfatase, arylsulfatase, and fucoidanase and was free from the α-L-fucosidase activity. These results indicate that the galactofucanase may be endo-type enzyme and the same one as the fucoidanase. FS-1, however, showed an activity on the partially degraded galactofucan sulfate, and contained two types (optimum pH 3 and 5) of α-L-fucosidase: one with optimum pH 3 was inhibited with galactofucan sulfate and the other with optimum pH 5 was not inhibited.<br> From these results, it is considered that α-L-fucosidase in FS-1 are useful for the structural study of a fucoidan analogue due to their specificity on the substrate, and that the galactofucanase in FS-2 is useful for partial degradation of the fucoidan analogue.
Journal
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- Nippon Nōgeikagaku Kaishi
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Nippon Nōgeikagaku Kaishi 50 (12), 577-584, 1976
Japan Society for Bioscience, Biotechnology, and Agrochemistry
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Details 詳細情報について
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- CRID
- 1390282679512217344
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- NII Article ID
- 130001225213
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- NII Book ID
- AN00196191
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- ISSN
- 18836844
- 00021407
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- NDL BIB ID
- 1741287
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed