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姓名	黃瑜雯(Yu-Wen Huang)  查詢紙本館藏	畢業系所	生命科學系
論文名稱	阿拉伯芥根細胞核之有絲分裂原蛋白質激酶與蛋白質酪胺酸磷酸化受銅處理之變化 (Nuclear Protein Phosphorylation under Metal Stress of Copper in the Root of Arabidopsis thaliana : the Aspects of MAPKs and tyrosine phosphorylation)
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摘要(中)	摘要 銅是植物生長所需的微量必須元素。但是當其過量時反而會引起 逆境的產生。細胞在化學逆境如過量金屬存在之㆘，會經由特定的訊 息傳遞路徑來調控基因表現。在動物細胞㆗和逆境相關的兩個主要訊 息傳遞因子為有絲分裂原蛋白質激酶及酪胺酸蛋白質激酶。其受逆境 活化後，再活化其受質如轉錄因子，以調控特定基因的表現。在植物 ㆗目前仍無探討金屬離子與有絲分裂原蛋白質激酶及酪胺酸蛋白質 酶關聯性的文獻發表。本論文是利用西方點墨法及膠內激酶活性分析 來探討在阿拉伯芥根部細胞核㆗的有絲分裂原蛋白質激酶及酪胺酸 磷酸化情形。結果偵測到㆒特定存在細胞核㆗54 kDa 的有絲分裂原 蛋白質激酶及㆕個酪胺酸磷酸化蛋白質受到過量銅處理而被磷酸 化。阿拉伯芥根部細胞經專㆒性高的有絲分裂原蛋白質激酶激酶抑制 劑-PD98059 處理後發現，此54 kDa核內有絲分裂原蛋白質激酶並不 會受到其處理而磷酸化受到抑制，所以推測其㆖游的有絲分裂原蛋白 質激酶激酶可能不為AtMEK1/ATMKK2。
摘要(英)	Abstract Copper is an essential micronutrient in plants. However, it causes stress response when presents in excess of amount. Cells cope with such chemical stress by signaling to the cellular responses including to activate particular transcription factors and regulate specific gene expression in nuclei. Two of the major stress signaling mechanisms are MAPKs and PTKs. None of the reports have studied how excess metal manipulate MAPKs or PTKs in plant nuclear compartment. In this thesis, using immunochemical analyses and in-gel kinase assays results clearly confirm the presence of a 54-kDa copper-induced nuclear MAPK and several tyrosine phosphorylated nuclear proteins in the roots of Arabidopsis thaliana. Treatment of PD98059 could not inactivate this unique nuclear MAPK. This indicates that its upstream MAPKK is not AtMEK1/AtMKK2.
關鍵字(中)	★ 阿拉伯芥 ★ 有絲分裂原蛋白質激酶 ★ 酪胺酸蛋白質激酶	關鍵字(英)	★ Arabidopsis thaliana ★ tyrosine phosphorylated proteins ★ MAP kinase
論文目次	目錄 中文摘要…………………………………………………………Ⅰ 英文摘要…………………………………………………………Ⅱ 目錄………………………………………………………………Ⅲ 縮寫與全名對照表……………………………………………....Ⅴ 圖目錄…………………………………………………………....Ⅵ 壹、緒論........................................................................................ 1 一、研究動機及緣由............................................................... 1 二、銅對植物的影響............................................................... 1 三、逆境與植物訊息傳遞之間的關係................................... 2 四、有絲分裂原蛋白質激酶................................................... 2 五、酪胺酸蛋白質激酶........................................................... 5 貳、材料與方法............................................................................. 8 一、阿拉伯芥培養................................................................... 8 二、根部細胞核之分離........................................................... 9 三、西方點墨法....................................................................... 9 四、膠內激酶活性分析......................................................... 12 五、有絲分裂原蛋白質激酶激酶抑制劑PD98059的使用13 六、化學藥品......................................................................... 13 七、儀器設備......................................................................... 14 參、結果....................................................................................... 15 一、阿拉伯芥根部細胞核之分離......................................... 15 二、以組蛋白H3抗體確定是否分離到阿拉伯芥細胞核.. 15 三、過量銅活化阿拉伯芥根部細胞核㆗之有絲分裂原蛋白質 激酶......................................................................................... 16 四、PD98059對有絲分裂原蛋白質激酶活性之影響......... 17 五、過量銅影響阿拉伯芥根部細胞核之酪胺酸磷酸化..... 17 肆、討論....................................................................................... 18 一、阿拉伯芥根部細胞核之分離......................................... 18 二、以組蛋白H3抗體確定分離到阿拉伯芥細胞核.......... 19 三、過量銅活化阿拉伯芥根部細胞核㆗之有絲分裂原蛋白質 激酶......................................................................................... 20 四、PD98059對有絲分裂原蛋白質激酶活性之影響......... 23 五、過量銅影響阿拉伯芥根部細胞核之酪胺酸磷酸化..... 24 伍、參考文獻............................................................................... 25 圖目錄........................................................................................... 30 附錄............................................................................................... 42
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指導教授	董啟功(Chii-Gong Tong)	審核日期	2002-7-18
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