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題 名 | Interactions between Nuclear Inclusion Protein a (NIa) and Nuclear Inclusion Protein b(NIb) of Zucchini Yellow Mosaic Virus and Papaya Ringspot Virus=矮南瓜黃化嵌紋病毒和木瓜輪點病毒之核內含體蛋白a及b間之交互反應 |
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作 者 | 李建中; 林詩舜; 葉錫東; 王錫民; | 書刊名 | 植物病理學會刊 |
卷 期 | 11:2 2002.06[民91.06] |
頁 次 | 頁79-86 |
分類號 | 433.4 |
關鍵詞 | 核內含體蛋白a; 核內含體蛋白b; 蛋白酵素; 遺傳多樣性; 酵母菌雜合系統; NIa; VPg; Proteinase; NIb; Potyvirus; Phylogenetic; Two-hybrid; |
語 文 | 英文(English) |
中文摘要 | 本研究以酵母菌雙雜合系統來檢測矮南瓜黃化嵌紋病毒新加坡株系(ZYMV-S) 和木瓜輪點病毒夏威夷株系(PRSV-HA)兩種病毒的核內含體蛋白a(NIa)及核內含體蛋白b(NIb)間的交互反應,結果顯示不論同一病毒或此二病毒間的NIa及NIb 蛋白間均有強烈的交互反應,亦即是ZYMV-S 的NIa及NIb蛋白與PRSV-HA 的NIa及NIb 蛋白彼此間均有反應。這結果顯示馬鈴薯Y群病毒RNA 的複製相關區域具有高度保留之共同性,不因病毒不同而有所差異。對ZYMV-S 而言,其NIb蛋白和NIa蛋白內的VPg及蛋白酵素二區域均有反應,其中對蛋白酵素區域的反應強度可達與VPg區域反應強度的八倍之多,顯示NIb蛋白和 NIa蛋白的VPg區域或蛋白酵素區域有不同程度的相互反應。本研究之結果首次顯示不同馬鈴薯Y群病毒的兩種病毒間的NIa蛋白和NIb蛋白有交互反應。 |
英文摘要 | An inducible yeast two-hybrid system was used to test direct protein-protein interactions between the nuclear inclusion protein a (NIa) and nuclear inclusion protein b (NIb) protein of Zucchini yellow mosaic virus (ZYMV-S) and Papaya ringspot virus (PRSV-HA). Strong homologous and heterologous interactions of the NIb proteins were observed. The NIa and NIb proteins of ZYMV-S and PRSV-HA could interact with each other. This suggests that RNA replication domains of potyviruses are highly conserved and are not virus species-specific. For ZYMV-S, the NIb protein interacted with both the VPg and proteinase domain of the NIa protein. Up to eight-fold increase was displayed by NIb-protease as compared to that of NIb-VPg interactions, showing that NIb exhibits stronger interaction with the proteinase domain of the NIa protein. Our results indicate that NIb interacts with both VPg and proteinase to different levels. This is the first demonstration of NIa-NIb interaction between two different potyviruses. |
本系統中英文摘要資訊取自各篇刊載內容。