Human cryptochrome exhibits light-dependent magnetosensitivity.

Human cryptochrome exhibits light-dependent magnetosensitivity.
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DOI:
10.1038/ncomms1364
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发表时间:
2011-06-21
影响因子:
16.6
通讯作者:
Reppert, Steven M.
Reppert, Steven M.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Foley, Lauren E.;Gegear, Robert J.;Reppert, Steven M.

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人们不相信人类有磁感,尽管许多动物使用地球的磁场来定位和导航。一种动物的磁感应模型提出,地磁场是通过涉及黄素蛋白隐色素(CRY)的光敏化学反应来感知的。在这里,我们使用转基因的方法表明,人类的RAM2,这是在视网膜中大量表达,可以作为磁传感器在果蝇的磁感受系统,它这样做的光依赖性的方式。研究结果表明,人类的BMP2具有作为光敏磁传感器的分子能力,并重新打开了一个可以在人类中进行进一步探索的感觉生物学领域。在动物中,隐花色素蛋白被认为是地球磁场的探测器,但人类还没有被证明具有磁感应能力。Foley等人证明,人类隐花色素蛋白质,BMP2,当在黑腹果蝇中表达时,可以以光依赖的方式介导磁感受。
Humans are not believed to have a magnetic sense, even though many animals use the Earth's magnetic field for orientation and navigation. One model of magnetosensing in animals proposes that geomagnetic fields are perceived by light-sensitive chemical reactions involving the flavoprotein cryptochrome (CRY). Here we show using a transgenic approach that human CRY2, which is heavily expressed in the retina, can function as a magnetosensor in the magnetoreception system of Drosophila and that it does so in a light-dependent manner. The results show that human CRY2 has the molecular capability to function as a light-sensitive magnetosensor and reopen an area of sensory biology that is ready for further exploration in humans. In animals, cryptochrome proteins are thought to be the detectors of the Earth's magnetic field, but humans have not been shown to posess mangetosensing capabilities. Foley et al. demonstrate that the human cryptochrome protein, CRY2, when expressed in Drosophila melanogaster can mediate magnetoreception in a light-dependent manner.
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