Elucidation of the mechanism of photosynthetic electron transport-dependent transcriptional regulation

众所周知，光合作用生物将环境变化视为光合作用电子传递链氧化还原状态的变化，从而启动转录调控。然而，有关转录调控因子在这一过程中发挥作用的信息一直非常有限。在这项研究中，我们建立了一个新的筛选系统来检测转录调控蛋白和氧化还原依赖的调节蛋白硫氧还蛋白之间的相互作用。利用这个筛选系统，我们成功地确定了5个转录调控因子作为硫氧还蛋白的新靶点。通过对这些调控因子的表征，我们将阐明依赖于光合作用电子传递的转录调控机制。

Photosynthetic organisms are known to perceive environmental changes as changes in redox state of photosynthetic electron transport chain to start transcriptional regulation. However, information on transcriptional regulators working on the process has been very limited. In this study, we established the new screening system to detect interaction between a transcriptional regulator and the redox-dependent regulatory protein, thioredoxin. We successfully identified five transcriptional regulators as new targets of thioredoxin using this screening system. By characterizing these regulators, the mechanism of photosynthetic electron transport-dependent transcriptional regulation will be elucidated.