Abstract
Three major visual signaling proteins, transducin, arrestin, and recoverin undergo bidirectional translocations between the outer segment and inner compartments of rod photoreceptors in a light-dependent manner. The light-dependent translocation of proteins is believed to contribute to adaptation and neuroprotection of photoreceptor cells. The potential physiological significance and mechanisms of light-controlled protein translocations are at the center of current discussion. In this paper, I outline the latest advances in understanding the mechanisms of bidirectional translocation of transducin and determinants of its steady-state distribution in dark- and light-adapted photoreceptor cells.
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Acknowledgments
I thank Drs. Vadim Arshavsky and Mark Stamnes for critically reading the manuscript and valuable comments and Vasily Kerov for creating illustrations. The author’s work is supported by National Institutes of Health Grant RO1 EY-12682.
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Artemyev, N.O. Light-Dependent Compartmentalization of Transducin in Rod Photoreceptors. Mol Neurobiol 37, 44–51 (2008). https://doi.org/10.1007/s12035-008-8015-2
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DOI: https://doi.org/10.1007/s12035-008-8015-2