@article{10272/22885,
year = {2023},
url = {https://hdl.handle.net/10272/22885},
abstract = {Energy transfer from light-harvesting ketocarotenoids to the light-driven proton pump xanthorhodopsins has been previously demonstrated in two unique cases: an extreme halophilic bacterium1 and a terrestrial cyanobacterium2 . Attempts to fnd carotenoids that bind and transfer energy to abundant rhodopsin proton pumps3 from marine photoheterotrophs have thus far failed4–6 . Here we detected light energy transfer from the widespread hydroxylated carotenoids zeaxanthin and lutein to the retinal moiety of xanthorhodopsins and proteorhodopsins using functional metagenomics combined with chromophore extraction from the environment. The light-harvesting carotenoids transfer up to 42% of the harvested energy in the violetor blue-light range to the green-light absorbing retinal chromophore. Our data suggest that these antennas may have a substantial efect on rhodopsin phototrophy in the world’s lakes, seas and oceans. However, the functional implications of our fndings are yet to be discovered},
organization = {Agencia Estatal de Investigación/FEDER, UE (grant number 2019-110438RB-C22 to R.L)},
publisher = {Nature Research},
title = {Phototrophy by antenna-containing rhodopsin pumps in aquatic environments},
doi = {10.1038/s41586-023-05774-6},
author = {Chazan, Ariel and Das, Ishita and Fujiwara, Takayoshi and Murakoshi, Shunya and Rozenberg, Andrey and Molina Márquez, Ana María and Sano, Fumiya K and Tanaka, Tatsuki and Gómez-Villegas, Patricia and Larom, Shirley and Purshkarev, Alina and Malakar, Partha and Hasegawa, Masumi and Tsukamoto, Yuya and Ishizuka, Tomohiro and Konno, Maseae and Nagata, Takashi and Mizuno, Yosuke and Katayama, Kota and Abe-Yoshizu, Rei and Ruhma, Sandford and Inoue, Keiichi and Kandori, Hideki and León Bañares, Rosa María and Shihoya, Wataru and Yoshizawa, Susumu and Sheves, Mordechai and Nureki, Osamu and Oded, Bejá},
}