Distribution of blue‐sensitive photoreceptors in amphibian retinas

FEBS Letters

Tokunaga, Fumio²  Takahashi, Yusuke¹  Hisatomi, Osamu²  Sakakibara, Shunsuke²  Tsukahara, Yasuo¹ 

[1] Department of System Information Science, Graduate School of Information Science, Tohoku University, 2-1-1 Katahira, Aoba, Sendai, Miyagi 980-8577, Japan;Department of Earth and Space Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan

关键词: Opsin;    Green rod;    Amphibia;    In situ hybridization;    Immunohistochemistry;    Japanese common newt (Cynops pyrrhogaster);   

DOI  :  10.1016/S0014-5793(01)02632-1

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Previously, 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.

【 授权许可】

Unknown