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題 名 | Analysis of β-Amylase Interaction with Starch Phosphorylase Using by Enzyme Kinetics=以酵素動力學實驗分析β-澱粉水解酶與澱粉磷解酶的交互作用 |
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作 者 | 陳師瑩; 黃水鏡; 蘇愛舒; 葉東柏; 蘇仲卿; | 書刊名 | 嘉南學報 |
卷 期 | 25 1999.11[民88.11] |
頁 次 | 頁156-164 |
分類號 | 346.78 |
關鍵詞 | 澱粉磷解酶; β-澱粉水解; 交互作用; Starch phosphorylase; β-Amylase; Interaction; |
語 文 | 英文(English) |
中文摘要 | 由甘藷(Ipomoea batatas[L.]Lam.)中分離出來,對澱粉磷解□(SP)具非競爭 性抑制作用的蛋白質,經鑑定已知為β-澱粉水解□(BA)。為了釐清澱粉磷解□與β- 澱粉水解□所扮演的生理模糊角色,必須闡明β-澱粉水解□抑制澱粉磷解□的分子機 轉。部分酵素動力學實驗的結果,支持兩者酵素於反應後,終產物抑制的理論及β-澱 粉水解酸競爭共同受質(澱粉),導致受質不足理論。相反的,β-澱粉水解□對澱粉 磷解□之非競爭性抑制作用,也能解釋為酵素相互結合理論。因此,上述三種可能機 制需要更深入研究,並應觀測其他可能之機制。 |
英文摘要 | The proteinaceous noncompetitive inhibitor of starch phosphorylase (SP) isolated from the root of sweet potato (Ipomoea hatatas [L.] Lam.) has been identified as a β-amylase (BA). For clarifying ambiguities about the physiological roles played by SP and BA, it seems essential to elucidate the molecular mechanism of SP Inhibition against BA. A part of enzyme kinetics experiment supported the mechanism of endproduct inhibition of SP or BA, or the depletion of starch by the amylolytic action of BA. On the contrary, the hypothesis of BA directly binding or interacting with SP was also supported by BA acting as a proteinaceous noncompetitive inhibitor. Therefore, the above three possible molecular mechanisms need to be investigated deeply. We also inspected some other possible mechanisms. |
本系統中英文摘要資訊取自各篇刊載內容。