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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Chemical Magnetoreception In Birds: The Radical Pair Mechanism
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Chemical Magnetoreception In Birds: The Radical Pair Mechanism

机译：鸟类的化学磁感受：自由基对机制

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摘要

Migratory birds travel vast distances each year, finding their way by various means, including a remarkable ability to perceive the Earth's magnetic field. Although it has been known for 40 years that birds possess a magnetic compass, avian magnetoreception is poorly understood at all levels from the primary biophysical detection events, signal transduction pathways and neurophysiology, to the processing of information in the brain. It has been proposed that the primary detector is a specialized ocular photoreceptor that plays host to magnetically sensitive photochemical reactions having radical pairs as fleeting intermediates. Here, we present a physical chemist's perspective on the "radical pair mechanism" of compass magnetoreception in birds. We outline the essential chemical requirements for detecting the direction of an Earth-strength ≈ 50 μT magnetic field and comment on the likelihood that these might be satisfied in a biologically plausible receptor. Our survey concludes with a discussion of cryptochrome, the photoactive protein that has been put forward as the magnetoreceptor molecule.
机译：候鸟每年都会远距离跋涉，以各种方式找到自己的出路，其中包括感知地球磁场的出色能力。尽管人们已经知道鸟类拥有一个磁罗盘已有40年了，但是从主要的生物物理检测事件，信号转导途径和神经生理学到大脑中的信息处理，在各个层面上对禽的磁感受知之甚少。已经提出，主要检测器是专用的眼感光体，其充当具有自由基对作为短暂中间体的磁敏光化学反应的主体。在这里，我们介绍了物理化学家对禽类罗盘磁接收的“自由基对机制”的看法。我们概述了检测地球强度≈50μT磁场方向的基本化学要求，并评论了在生物学上合理的受体中满足这些要求的可能性。我们的调查以对隐色染料的讨论结束，隐色染料是作为磁受体分子提出的光敏蛋白。

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    Christopher T. Rodgers; P. J. Hore;

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    Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QZ, United Kingdom Oxford Centre for Clinical Magnetic Resonance Research, Level 0, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom;

    Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QZ, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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