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- W4386725672 abstract "Cryptochromes (CRYs) are essential components of the molecular clock that generates circadian rhythm. They inhibit BMAL1/CLOCK-driven transcription at the molecular level. There are two CRYs that have differential functions in the circadian clock in mammals. It is not precisely known how they achieve such differential functions. In this study, we performed molecular dynamic simulations on eight CRY mutants that have been experimentally shown to exhibit reduced repressor activities. Our results revealed that mutations in CRY1 affect the dynamic behavior of the serine loop and the availability of the secondary pocket, but not in CRY2. Further analysis of these CRY1 mutants indicated that the differential flexibility of the serine loop leads to changes in the volume of the secondary pocket. We also investigated the weak interactions between the amino acids in the serine loop and those in close proximity. Our findings highlighted the crucial roles of S44 and S45 in the dynamic behavior of the serine loop, specifically through their interactions with E382 in CRY1. Considering the clinical implications of altered CRY1 function, our study opens up new possibilities for the development of drugs that target the allosteric regulation of CRY1.Communicated by Ramaswamy H. Sarma." @default.
- W4386725672 created "2023-09-15" @default.
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- W4386725672 date "2023-09-13" @default.
- W4386725672 modified "2023-09-26" @default.
- W4386725672 title "Dynamic regulation of the serine loop by distant mutations reveals allostery in cryptochrome1" @default.
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- W4386725672 doi "https://doi.org/10.1080/07391102.2023.2256882" @default.
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