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Báo cáo khoa học: Stimulation of p-nitrophenylphosphatase activity of Na+ ⁄ K+-ATPase by NaCl with oligomycin or ATP

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:12

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It is known that the addition of NaCl with oligomycin or ATP stimulates ouabain-sensitive and K + -dependent p-nitrophenylphosphatase (pNPPase) activity of Na + ⁄K + -ATPase. We investigated the mechanism of the stimu-lation. The combination of oligomycin and NaCl increased the affinity of pNPPase activity for K + . When the ratio of Na + to Rb + was 10 in the presence of oligomycin, Rb + -binding and pNPPase activity reached a maxi-mal level and Na + was occluded.

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Nội dung Text: Báo cáo khoa học: Stimulation of p-nitrophenylphosphatase activity of Na+ ⁄ K+-ATPase by NaCl with oligomycin or ATP

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