Induction of gelatinolytic activities in ayu muscle at the spawning stage.
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- KUBOTA SATOSHI
- Laboratory of Aquatic Product Utilization, Faculty of Agriculture, Kochi University
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- KINOSHITA MASATO
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University
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- YOKOYAMA YOSHIHIRO
- Interdisciplinary Research Institute for Biosciences, Mukogawa Women's University
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- TOYOHARA HARUHIKO
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University
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- SAKAGUCHI MORIHIKO
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University
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Abstract
Gelatinolytic activities derived from both serine proteinase and metalloproteinase were induced in mature ayu muscle. These activities from ayu muscle at spawning stage (November) were fractionated successively by DEAE-cellulose, CM-cellulose, and gelatin affinity chromatographies, while no corresponding activity was detected from that of the growing stage (July). A gelatinolytic active band adsorbed to a CM-cellulose column was detected at 80 kDa by gelatin zymographic analysis. The activity was expressed at a slightly alkaline pH range and optimally at pH 8.5. The activity was inhibited by leupeptin and 1, 10-phenanthroline, but not by E-64, suggesting that it was composed of both serine proteinase and metalloproteinase. Serine-type activity at 80 kDa was not adsorbed to a gelatin-immobilized column. On the other hand, metallo-type activity was adsorbed to the column, and the molecular mass of the activity was estimated to be 68 kDa. Our findings suggested that these gelatinolytic activities due to both serine proteinase and metalloproteinase, which are specifically induced in the spawning stage, are possibly responsible for collagen breakdown according to maturation.
Journal
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- Fisheries science
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Fisheries science 66 (3), 574-578, 2000
The Japanese Society of Fisheries Science
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Keywords
Details 詳細情報について
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- CRID
- 1390001204427801344
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- NII Article ID
- 130003742289
- 30014677435
- 10004859017
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- NII Book ID
- AA10993718
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- ISSN
- 14442906
- 09199268
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- NDL BIB ID
- 5444106
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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