Structural foundations of optogenetics: Determinants of channelrhodopsin ion selectivity

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Structural foundations of optogenetics: Determinants of channelrhodopsin ion selectivity.

The structure-guided design of chloride-conducting channelrhodopsins has illuminated mechanisms underlying ion selectivity of this remarkable family of light-activated ion channels. The first generation of chloride-conducting channelrhodopsins, guided in part by development of a structure-informed electrostatic model for pore selectivity, included both the introduction of amino acids with posit...

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Channelrhodopsins (ChRs) are light-gated cation channels that mediate ion transport across membranes in microalgae (vectorial catalysis). ChRs are now widely used for the analysis of neural networks in tissues and living animals with light (optogenetics). For elucidation of functional mechanisms at the atomic level, as well as for further engineering and application, a detailed structure is urg...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2015

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.1523341113