Phototransduction and the evolution of photoreceptors.

Phototransduction and the evolution of photoreceptors.
复制标题

DOI:
10.1016/j.cub.2009.12.006
复制
发表时间:
2010-02-09
期刊:
Current biology : CB
影响因子:
--
通讯作者:
Laughlin SB
Laughlin SB
中科院分区:
其他
文献类型:
--
作者:
Fain GL;Hardie R;Laughlin SB

文献摘要

参考文献

被引文献

相似文献

后生动物的光感受器可分为两类,它们的光感受膜来自纤毛或微绒毛。这两类都使用某种形式的视色素蛋白质视蛋白,它与11-顺式视黄醇一起吸收光并激活G蛋白级联反应,导致离子通道的打开或关闭。近来,视蛋白和其他光感受器蛋白的分子进化受到了相当大的关注;关于各种光感受器类型中的转导也有很多了解。在这里,我们联合收割机结合这些知识,试图理解为什么某些感光器可能在进化过程中赋予了特定的选择优势。我们认为,微绒毛光感受器在大多数无脊椎动物物种中占主导地位,因为它们的单光子灵敏度,高时间分辨率和大的动态范围,杆和双重视网膜提供原始脊索动物和脊椎动物具有相似的灵敏度和动态范围,但具有较小的ATP支出。
Photoreceptors in metazoans can be grouped into two classes, with their photoreceptive membrane derived either from cilia or microvilli. Both classes use some form of the visual pigment protein opsin, which together with 11-cis retinaldehyde absorbs light and activates a G-protein cascade, resulting in the opening or closing of ion channels. Considerable attention has recently been given to the molecular evolution of the opsins and other photoreceptor proteins; much is also known about transduction in the various photoreceptor types. Here we combine this knowledge in an attempt to understand why certain photoreceptors might have conferred particular selective advantages during evolution. We suggest that microvillar photoreceptors became predominant in most invertebrate species because of their single-photon sensitivity, high temporal resolution, and large dynamic range, and that rods and a duplex retina provided primitive chordates and vertebrates with similar sensitivity and dynamic range, but with a smaller expenditure of ATP.
DOI: 10.1126/science.1099955
发表时间: 2004-10-29
期刊: SCIENCE
影响因子: 56.9
作者:
Arendt, D;Tessmar-Raible, K;Wittbrodt, J
通讯作者: Wittbrodt, J
DOI: 10.1074/jbc.m414538200
发表时间: 2005-04-29
影响因子: 4.8
作者:
Gomez, MD;Nasi, E
通讯作者: Nasi, E
DOI: 10.1159/000113339
发表时间: 1997-10-01
影响因子: 1.7
作者:
Fernald, RD
通讯作者: Fernald, RD
DOI: 10.1007/s00359-007-0211-4
发表时间: 2007-05-01
影响因子: 2.1
作者:
Garm, A.;Coates, M. M.;Nilsson, D.-E.
通讯作者: Nilsson, D.-E.
DOI: 10.1098/rspb.1978.0027
发表时间: 1978-01-01
期刊: PROCEEDINGS OF THE ROYAL SOCIETY SERIES B-BIOLOGICAL SCIENCES
影响因子: --
作者:
BLEST, AD
通讯作者: BLEST, AD