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Báo cáo khoa học: Calcium-dependent protein–protein interactions induce changes in proximity relationships of Cys48 and Cys64 in chicken skeletal troponin I

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:9

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The goal of this study was to relate conformational changes in the N-terminal domain of chicken troponin I (TnI) to Ca 2+ activation of the actin–myosin interaction.The two cysteine residues in this region (Cys48 and Cys64) were labeled with two sulfhydryl-reactive pyrene-containing fluorophores [N-(1-pyrene)maleimide, and N-(1-pyrene)-iodoacetamide].The labeled TnI showed a typical fluores-cence spectrum: two sharp peaks of monomer fluorescence and a broad peak of excimer fluorescence arising from the formation of an excited dimer (excimer)....

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Nội dung Text: Báo cáo khoa học: Calcium-dependent protein–protein interactions induce changes in proximity relationships of Cys48 and Cys64 in chicken skeletal troponin I

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