Phototransduction and the evolution of photoreceptors.
Phototransduction and the evolution of photoreceptors.
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DOI:
10.1016/j.cub.2009.12.006
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发表时间:
2010-02-09
期刊:
影响因子:
--
通讯作者:
Laughlin SB
中科院分区:
文献类型:
--
作者:
Fain GL;Hardie R;Laughlin SB
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.
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影响因子:
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作者:
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通讯作者:
Wittbrodt, J
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作者:
Gomez, MD;Nasi, E
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Nasi, E
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作者:
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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