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首页> 外文期刊>Neuron >Drosophila CLOCK protein is under posttranscriptional control and influences light-induced activity.
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Drosophila CLOCK protein is under posttranscriptional control and influences light-induced activity.

机译:果蝇CLOCK蛋白受转录后控制,并影响光诱导的活性。

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In the Drosophila circadian clock, daily cycles in the RNA levels of dclock (dClk) are antiphase to those of period (per). We altered the timing/levels of dClk expression by generating transgenic flies whereby per circadian regulatory sequences were used to drive rhythmic transcription of dClk. The results indicate that posttranscriptional mechanisms make substantial contributions to the temporal changes in the abundance of the dCLK protein. Circadian regulation is largely unaffected in the transgenic per-dClk flies despite higher mean levels of dCLK. However, in per-dClk flies the duration of morning activity is lengthened in light-dark cycles and light pulses evoke longer lasting bouts of activity. Our findings suggest that, in addition to a role in generating circadian rhythms, dCLK modulates the direct effects of light on locomotion.
机译:在果蝇生物钟中,dclock(dClk)的RNA水平的每日周期与周期(per)的周期相反。我们通过产生转基因果蝇来改变dClk表达的时间/水平,从而使用每个昼夜节律调控序列来驱动dClk的有节奏的转录。结果表明转录后机制对dCLK蛋白丰度的时间变化做出了重大贡献。尽管dCLK的平均水平较高,但昼夜调节在转基因per-dClk蝇中基本不受影响。但是,在每dClk蝇中,早晨活动的持续时间以明暗周期延长,并且光脉冲激发了较长的持续活动。我们的发现表明,除了在产生昼夜节律方面发挥作用外,dCLK还调节光对运动的直接影响。

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