視細胞の光受容メカニズム

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タイトル別名
  • Phototransduction Mechanism in Visual Cells
  • シ サイボウ ノ ヒカリ ジュヨウ メカニズム

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Animal retinas possess photoreceptor cells specialized to receive photons and convert them into neural signals. There are two types of visual cells, called rods and cones. Rods function in dim light conditions, and their photosensitivity is sufficiently high to respond to a single photon. Cones show rapid photoresponse, and the combination of cones having different wavelength sensitivity enables color vision. The transduction cascade in visual cells is initiated by the activation of G protein by photoactivated visual pigment, and this eventually results in the hyperpolarization of the cell. Recent progress in the study of the molecular basis of vision is reviewed.

収録刊行物

  • 生物物理

    生物物理 55 (6), 299-304, 2015

    一般社団法人 日本生物物理学会

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