Two isoforms of chicken melanopsins show blue light sensitivity

Masaki Torii, Daisuke Kojima, Toshiyuki Okano, Atsushi Nakamura, Akihisa Terakita, Yoshinori Shichida, Akimori Wada, Yoshitaka Fukada

研究成果: Article査読

61 被引用数 (Scopus)

抄録

Melanopsin is a vertebrate non-visual opsin and functions as a circadian photoreceptor in mammalian retinas. Here we found the expression of two kinds of melanopsin genes in the chicken pineal gland and identified the presence of five isoforms derived from these two genes. Reconstitution of the recombinant proteins with 11-cis-retinal revealed that at least two of these melanopsin protein isoforms can function as blue-sensitive photopigments with absorption maxima at 476-484 nm. These values are consistent with maximal sensitivities of action spectra determined from the physiological and behavioral studies on mammalian melanopsins. The melanopsin isoforms found in this study may function as pineal circadian photoreceptors.

本文言語English
ページ(範囲)5327-5331
ページ数5
ジャーナルFEBS Letters
581
27
DOI
出版ステータスPublished - 2007 11 13
外部発表はい

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology

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