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- W2891732507 abstract "Calmodulin contains multiple redox sensitive methionines whose oxidation alters the regulation of numerous targets. Molecular dynamics simulations were used to define the molecular principles that govern how calmodulin is structurally poised to detect and respond to methionine oxidation. We found that calmodulin's open and closed states were preferentially stabilized by unique, redox sensitive, methionine-aromatic interactions. Key methionine-aromatic interactions were coupled to reorientation of EF hand helices. Methionine to glutamine substitutions designed to mimic methionine oxidation strongly altered conformational transitions by modulating the strength of methionine-aromatic interactions. Together, these results suggest a broadly applicable redox sensing mechanism though which methionine oxidation by cellular oxidants alters the strength of methionine-aromatic interactions critical for functional protein dynamics." @default.
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- W2891732507 date "2018-10-01" @default.
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- W2891732507 title "Unique methionine-aromatic interactions govern the calmodulin redox sensor" @default.
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- W2891732507 doi "https://doi.org/10.1016/j.bbrc.2018.09.052" @default.
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