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Báo cáo khóa học: Metal-binding stoichiometry and selectivity of the copper chaperone CopZ from Enterococcus hirae

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

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We studied the interaction of several metal ions with the copper chaperone fromEnterococcus hirae(EhCopZ). We show that the stoichiometry of the protein–metal complex varies with the experimental conditions used. At high con-centration of the protein in a noncoordinatingbuffer, a dimer, (EhCopZ)2–metal, was formed. The presence of a potentially coordinatingmolecule L in the solution leads to the formation of a monomeric ternary complex, EhCopZ– Cu–L, where L can be a buffer or a coordinatingmole-cule (glutathione, tris(2-carboxyethyl)phosphine). ...

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Nội dung Text: Báo cáo khóa học: Metal-binding stoichiometry and selectivity of the copper chaperone CopZ from Enterococcus hirae

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