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      Correction: Comparison of the molecular properties of retinitis pigmentosa P23H and N15S amino acid replacements in rhodopsin

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          Abstract

          The affiliation and email address for the eleventh author are incorrect. The current address for Alessandro Iannaccone should be listed as affiliation #5. Alessandro Iannaccone is affiliated with #4: Retinal Degeneration & Ophthalmic Genetics Service & Lions Visual Function Diagnostic Lab, Hamilton Eye Institute, Dept. Ophthalmology, University of Tennessee Health Science Center, Memphis, Tennessee, United States of America, and with #5: Center for Retinal Degenerations and Ophthalmic Genetic Diseases, Duke Eye Center, Dept. Ophthalmology, Duke University School of Medicine, Durham, North Carolina, United States of America. Dr. Iannaccone’s email address is alessandro.iannaccone@duke.edu.

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          Comparison of the molecular properties of retinitis pigmentosa P23H and N15S amino acid replacements in rhodopsin

          Mutations in the RHO gene encoding for the visual pigment protein, rhodopsin, are among the most common cause of autosomal dominant retinitis pigmentosa (ADRP). Previous studies of ADRP mutations in different domains of rhodopsin have indicated that changes that lead to more instability in rhodopsin structure are responsible for more severe disease in patients. Here, we further test this hypothesis by comparing side-by-side and therefore quantitatively two RHO mutations, N15S and P23H, both located in the N-terminal intradiscal domain. The in vitro biochemical properties of these two rhodopsin proteins, expressed in stably transfected tetracycline-inducible HEK293S cells, their UV-visible absorption, their Fourier transform infrared, circular dichroism and Metarhodopsin II fluorescence spectroscopy properties were characterized. As compared to the severely impaired P23H molecular function, N15S is only slightly defective in structure and stability. We propose that the molecular basis for these structural differences lies in the greater distance of the N15 residue as compared to P23 with respect to the predicted rhodopsin folding core. As described previously for WT rhodopsin, addition of the cytoplasmic allosteric modulator chlorin e6 stabilizes especially the P23H protein, suggesting that chlorin e6 may be generally beneficial in the rescue of those ADRP rhodopsin proteins whose stability is affected by amino acid replacement.
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            Author and article information

            Journal
            PLoS One
            PLoS ONE
            plos
            plosone
            PLoS ONE
            Public Library of Science (San Francisco, CA USA )
            1932-6203
            7 November 2019
            2019
            7 November 2019
            : 14
            : 11
            : e0225153
            Article
            PONE-D-19-30292
            10.1371/journal.pone.0225153
            6837281
            31697785
            1b5567ab-8b87-4906-bb42-e99674b4f99f
            © 2019 Mitchell et al

            This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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