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Báo cáo khoa học: Steady-state and time-resolved fluorescence studies of conformational changes induced by cyclic AMP and DNA binding to cyclic AMP receptor protein from Escherichia coli

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:11

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cAMP receptor protein (CRP), allosterically activated by cAMP, regulates the expression of several genes inEscheri-chia coli. As binding of cAMP leads to undefined conform-ational changes in CRP, we performed a steady-state and time-resolved fluorescence study to showhow the binding of the ligand influences the structure and dynamics of the protein. We used CRP mutants containing a single trypto-phan residue at position 85 or 13, and fluorescently labeled with 1,5-I-AEDANS attached toCys178.

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Nội dung Text: Báo cáo khoa học: Steady-state and time-resolved fluorescence studies of conformational changes induced by cyclic AMP and DNA binding to cyclic AMP receptor protein from Escherichia coli

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