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- 殿塚 隆史
- Department of Biotechnology, The University of Tokyo
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- 井深 章子
- Department of Biotechnology, The University of Tokyo
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- 酒井 坦
- Department of Biotechnology, The University of Tokyo
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- 松沢 洋
- Department of Biotechnology, The University of Tokyo
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- 坂野 好幸
- Department of Applied Biological Science, Faculty of Agricuture, Tokyo University of Agriculture and Technology
書誌事項
- タイトル別名
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- Comparison of Transglycosylation Catalyzed by Two α-Amylases from Thermoactinomyces vulgaris R-47
- Comparison of Transglycosylation Cataly
この論文をさがす
抄録
Thermoactinomyces vulgaris R-47 produces two a-amylases, TVA I and TVA II, and both enzymes catalyze the same transglycosylation reaction. However, TVA II accumulates the transglycosylation products more than TVA I. The time course of the accumulations between the two TVAs was compared using pullulan and [U-→14C]glucose. The reactions consisted of two stages, which are the formation of the transglycosylation products and the degradation of the accumulated products, whether TVA I or TVA II was used. The rates of product formation by TVA I were similar, 1 to 2.4-fold, to those by TVA II, whereas TVA II accumulated 3.5 to 7.5 times as much products as TVA I. Thus, we infer that the rates of product degradation by TVA I were larger than those by TVA II. The difference in the degradation rates was not due to the hydrolytic activity, ie., differences in the kcal/Km values between TVA I and TVA II, but due to the inhibition of TVA II by panose, the hydrolysate of pullulan.
収録刊行物
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- 応用糖質科学
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応用糖質科学 43 (1), 95-98, 1996
日本応用糖質科学会
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詳細情報 詳細情報について
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- CRID
- 1390282680148738688
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- NII論文ID
- 130004091088
- 10008255087
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- NII書誌ID
- AN10453916
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- ISSN
- 18844898
- 13403494
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- NDL書誌ID
- 3959783
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可