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酵母菌雙雜合系統

酵母菌雙雜合系統,英文為Yeast two-hybrid system,亦簡稱Two-hybrid screening,是一種研究蛋白質交互作用 [1]或蛋白質和DNA交互作用[2][3]的實驗技術。

此系統的基本原理是報導基因上游的啟動區域與轉錄因子結合後,使下游的報導基因表現。在酵母菌雙雜合系統中將轉錄因子設計為結合區(Binding domain, BD)和活化區(Active domain, AD),結合區可與基因上游的啟動區域結合,活化區負責活動下游報導基因開始轉錄[1][2]

歷史

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1989年Fields and Song率先開發出這項技術來研究蛋白質間的交互作用,他們最早使用的是Saccharomyces cerevisiae這種酵母菌的GAL4表達系統,這種利用半乳糖影響基因表現原理[4],來進行研究蛋白質和DNA交互作用、DNA間交互作用的篩選技術,在大腸桿菌中有更多的應用。[3]

功用

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  1. 探討蛋白質對應的生理功能[5]
  2. 了解作用需啟用的蛋白質
  3. 過濾沒有作用的蛋白質
  4. 建立起蛋白質資料庫

相關條目

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參考資料

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  1. ^ 1.0 1.1 Young K. Yeast two-hybrid: so many interactions, (in) so little time.. Biol Reprod. 1998, 58 (2): 302–11. PMID 9475380. doi:10.1095/biolreprod58.2.302. (原始内容存档于2007-09-27). 
  2. ^ 2.0 2.1 Joung J, Ramm E, Pabo C. A bacterial two-hybrid selection system for studying protein-DNA and protein-protein interactions. Proc Natl Acad Sci USA. 2000, 97 (13): 7382–7 [2009-03-06]. PMID 10852947. doi:10.1073/pnas.110149297. (原始内容存档于2008-05-02). 
  3. ^ 3.0 3.1 Hurt J, Thibodeau S, Hirsh A, Pabo C, Joung J. Highly specific zinc finger proteins obtained by directed domain shuffling and cell-based selection. Proc Natl Acad Sci USA. 2003, 100 (21): 12271–6 [2009-03-06]. PMID 14527993. doi:10.1073/pnas.2135381100. (原始内容存档于2008-06-25). 
  4. ^ Fields S, Song O. A novel genetic system to detect protein-protein interactions. Nature. 1989, 340 (6230): 245–6 [2009-03-06]. PMID 2547163. doi:10.1038/340245a0. (原始内容 (abstract)存档于2016-08-17).  Abstract is free; full-text article is not.
  5. ^ 功能性探討蛋白質與蛋白質的交互作用 Functional Approaches to protein-protein interactions游佳融 1、李芳仁 1,21 台大醫院醫學研究部 2台大醫學院分子醫學研究所
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酵母菌雙雜合系統
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