Functional diversification process of opsin genes for teleost visual and pineal photoreceptions.

Autor: Fujiyabu C; Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan., Gyoja F; Institute for Integrative Neurobiology and Department of Biology, Graduate School of Natural Science, Konan University, Hyogo, 658-8501, Japan., Sato K; Department of Cytology and Histology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan., Kawano-Yamashita E; Department of Chemistry, Biology and Environmental Science, Faculty of Science, Nara Women's University, Nara, 630-8506, Japan., Ohuchi H; Department of Cytology and Histology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan., Kusakabe TG; Institute for Integrative Neurobiology and Department of Biology, Graduate School of Natural Science, Konan University, Hyogo, 658-8501, Japan., Yamashita T; Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan. yamashita.takahiro.4z@kyoto-u.ac.jp.
Jazyk: angličtina
Zdroj: Cellular and molecular life sciences : CMLS [Cell Mol Life Sci] 2024 Oct 08; Vol. 81 (1), pp. 428. Date of Electronic Publication: 2024 Oct 08.
DOI: 10.1007/s00018-024-05461-3
Abstrakt: Most vertebrates have a rhodopsin gene with a five-exon structure for visual photoreception. By contrast, teleost fishes have an intron-less rhodopsin gene for visual photoreception and an intron-containing rhodopsin (exo-rhodopsin) gene for pineal photoreception. Here, our analysis of non-teleost and teleost fishes in various lineages of the Actinopterygii reveals that retroduplication after branching of the Polypteriformes produced the intron-less rhodopsin gene for visual photoreception, which converted the parental intron-containing rhodopsin gene into a pineal opsin in the common ancestor of the Teleostei. Additional analysis of a pineal opsin, pinopsin, shows that the pinopsin gene functions as a green-sensitive opsin together with the intron-containing rhodopsin gene for pineal photoreception in tarpon as an evolutionary intermediate state but is missing in other teleost fishes, probably because of the redundancy with the intron-containing rhodopsin gene. We propose an evolutionary scenario where unique retroduplication caused a "domino effect" on the functional diversification of teleost visual and pineal opsin genes.
(© 2024. The Author(s).)
Databáze: MEDLINE
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