Cargando…

A blue-shifted anion channelrhodopsin from the Colpodellida alga Vitrella brassicaformis

Microbial rhodopsins, a family of photoreceptive membrane proteins containing the chromophore retinal, show a variety of light-dependent molecular functions. Channelrhodopsins work as light-gated ion channels and are widely utilized for optogenetics, which is a method for controlling neural activiti...

Descripción completa

Detalles Bibliográficos
Autores principales: Kojima, Keiichi, Kawanishi, Shiho, Nishimura, Yosuke, Hasegawa, Masumi, Nakao, Shin, Nagata, Yuya, Yoshizawa, Susumu, Sudo, Yuki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10147648/
https://www.ncbi.nlm.nih.gov/pubmed/37117398
http://dx.doi.org/10.1038/s41598-023-34125-8
_version_ 1785034836387299328
author Kojima, Keiichi
Kawanishi, Shiho
Nishimura, Yosuke
Hasegawa, Masumi
Nakao, Shin
Nagata, Yuya
Yoshizawa, Susumu
Sudo, Yuki
author_facet Kojima, Keiichi
Kawanishi, Shiho
Nishimura, Yosuke
Hasegawa, Masumi
Nakao, Shin
Nagata, Yuya
Yoshizawa, Susumu
Sudo, Yuki
author_sort Kojima, Keiichi
collection PubMed
description Microbial rhodopsins, a family of photoreceptive membrane proteins containing the chromophore retinal, show a variety of light-dependent molecular functions. Channelrhodopsins work as light-gated ion channels and are widely utilized for optogenetics, which is a method for controlling neural activities by light. Since two cation channelrhodopsins were identified from the chlorophyte alga Chlamydomonas reinhardtii, recent advances in genomic research have revealed a wide variety of channelrhodopsins including anion channelrhodopsins (ACRs), describing their highly diversified molecular properties (e.g., spectral sensitivity, kinetics and ion selectivity). Here, we report two channelrhodopsin-like rhodopsins from the Colpodellida alga Vitrella brassicaformis, which are phylogenetically distinct from the known channelrhodopsins. Spectroscopic and electrophysiological analyses indicated that these rhodopsins are green- and blue-sensitive pigments (λ(max) =  ~ 550 and ~ 440 nm) that exhibit light-dependent ion channeling activities. Detailed electrophysiological analysis revealed that one of them works as a monovalent anion (Cl(−), Br(−) and NO(3)(−)) channel and we named it V. brassicaformis anion channelrhodopsin-2, VbACR2. Importantly, the absorption maximum of VbACR2 (~ 440 nm) is blue-shifted among the known ACRs. Thus, we identified the new blue-shifted ACR, which leads to the expansion of the molecular diversity of ACRs.
format Online
Article
Text
id pubmed-10147648
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-101476482023-04-30 A blue-shifted anion channelrhodopsin from the Colpodellida alga Vitrella brassicaformis Kojima, Keiichi Kawanishi, Shiho Nishimura, Yosuke Hasegawa, Masumi Nakao, Shin Nagata, Yuya Yoshizawa, Susumu Sudo, Yuki Sci Rep Article Microbial rhodopsins, a family of photoreceptive membrane proteins containing the chromophore retinal, show a variety of light-dependent molecular functions. Channelrhodopsins work as light-gated ion channels and are widely utilized for optogenetics, which is a method for controlling neural activities by light. Since two cation channelrhodopsins were identified from the chlorophyte alga Chlamydomonas reinhardtii, recent advances in genomic research have revealed a wide variety of channelrhodopsins including anion channelrhodopsins (ACRs), describing their highly diversified molecular properties (e.g., spectral sensitivity, kinetics and ion selectivity). Here, we report two channelrhodopsin-like rhodopsins from the Colpodellida alga Vitrella brassicaformis, which are phylogenetically distinct from the known channelrhodopsins. Spectroscopic and electrophysiological analyses indicated that these rhodopsins are green- and blue-sensitive pigments (λ(max) =  ~ 550 and ~ 440 nm) that exhibit light-dependent ion channeling activities. Detailed electrophysiological analysis revealed that one of them works as a monovalent anion (Cl(−), Br(−) and NO(3)(−)) channel and we named it V. brassicaformis anion channelrhodopsin-2, VbACR2. Importantly, the absorption maximum of VbACR2 (~ 440 nm) is blue-shifted among the known ACRs. Thus, we identified the new blue-shifted ACR, which leads to the expansion of the molecular diversity of ACRs. Nature Publishing Group UK 2023-04-28 /pmc/articles/PMC10147648/ /pubmed/37117398 http://dx.doi.org/10.1038/s41598-023-34125-8 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Kojima, Keiichi
Kawanishi, Shiho
Nishimura, Yosuke
Hasegawa, Masumi
Nakao, Shin
Nagata, Yuya
Yoshizawa, Susumu
Sudo, Yuki
A blue-shifted anion channelrhodopsin from the Colpodellida alga Vitrella brassicaformis
title A blue-shifted anion channelrhodopsin from the Colpodellida alga Vitrella brassicaformis
title_full A blue-shifted anion channelrhodopsin from the Colpodellida alga Vitrella brassicaformis
title_fullStr A blue-shifted anion channelrhodopsin from the Colpodellida alga Vitrella brassicaformis
title_full_unstemmed A blue-shifted anion channelrhodopsin from the Colpodellida alga Vitrella brassicaformis
title_short A blue-shifted anion channelrhodopsin from the Colpodellida alga Vitrella brassicaformis
title_sort blue-shifted anion channelrhodopsin from the colpodellida alga vitrella brassicaformis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10147648/
https://www.ncbi.nlm.nih.gov/pubmed/37117398
http://dx.doi.org/10.1038/s41598-023-34125-8
work_keys_str_mv AT kojimakeiichi ablueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT kawanishishiho ablueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT nishimurayosuke ablueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT hasegawamasumi ablueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT nakaoshin ablueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT nagatayuya ablueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT yoshizawasusumu ablueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT sudoyuki ablueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT kojimakeiichi blueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT kawanishishiho blueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT nishimurayosuke blueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT hasegawamasumi blueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT nakaoshin blueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT nagatayuya blueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT yoshizawasusumu blueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis
AT sudoyuki blueshiftedanionchannelrhodopsinfromthecolpodellidaalgavitrellabrassicaformis