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Distribution of blue-sensitive photoreceptors in amphibian retinas

By Yusuke Takahashi, Osamu Hisatomi, Shunsuke Sakakibara, Fumio Tokunaga and Yasuo Tsukahara

Abstract

AbstractPreviously, we reported that an opsin (Rc-MS) belonging to the SWS2 group opsins is expressed in bullfrog green rods [Hisatomi, O. et al., FEBS Lett., 1999, 447, 44–48]. An anti-Rc-MS antiserum recognized the cones of the Japanese common newt, Cynops pyrrhogaster, which has no green rods. We isolated a cDNA encoding an SWS2 group opsin (Cp-SWS2) from this newt and found that Cp-SWS2 is expressed in a small population of the cones. Our results suggest that SWS2 opsins can be expressed in either green rods or cones of caudata. It seems reasonable to suppose that green rods arose before amphibia were divided into caudata and anura

Publisher: Federation of European Biochemical Societies. Published by Elsevier B.V.
Year: 2001
DOI identifier: 10.1016/S0014-5793(01)02632-1
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