淡江大學機構典藏:Item 987654321/85548
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/85548


    Title: TKU001 Strain所產生蛋白脢之純化與定性
    Other Titles: Purification and Characterization of Protease from TKU001 Strain
    Authors: 楊鈞翔;王三郎
    Contributors: 淡江大學生命科學研究所
    Keywords: 蝦殼粉;蛋白脢
    Date: 2006
    Issue Date: 2013-04-09 11:39:17 (UTC+8)
    Abstract: 此菌株是經由水解真菌細胞壁所篩選出之TKU001菌株,而本實驗以發酵蝦殼粉(shrimp shell powder;簡稱SSP)作為主要營養源,探討TKU001所生產蛋白脢之純化分離及定性。最適培養條件為0.5%SSP、0.1%K2HPO4、0.05%MgSO47H2O之50mL液態培養基(pH 6)於250mL之三角錐形瓶中,以37℃振盪(150rpm)培養3天後,可得最大之蛋白脢活性(0.11U/mL)。利用TKU001之蛋白脢較適生產條件大量培養,所得發酵液經DEAE Sepharose CL-6B、Sephacryl S-200等蛋白質分離純化步驟,可純化出二種蛋白脢F1&F2)。蛋白(之生化特性經分析結果:F1蛋白脢最適反應溫度為60℃、最適反應pH 8、熱安定性<60℃、pH安定性6~9;F2蛋白脢最適反應溫度為60℃、最適反應pH 7、熱安定性<50℃、pH安定性7~9。抑制劑及金屬離子對酵素活性的影響,分別受到濃度(5mM)EDTA和Fe/sup 2+/、Cu/sup 2+/、Mn/sup 2+/離子的抑制,但F2蛋白脢不受Mn/sup 2+/離子的抑制。
    Relation: 2006 台灣幾丁質幾丁聚醣研討會論文集,4頁
    Appears in Collections:[Graduate Institue of Life Sciences] Proceeding

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