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Yes, concentrated NiSO4 solution can be used to elute His-tagged Ni-NTA bound protein as the histidine tag binds to the nickel ions on the column. The elution is typically achieved by using a gradient of increasing NiSO4 concentration, allowing the protein of interest to be selectively released from the column. It is important to optimize the elution conditions to maintain protein stability and avoid nonspecific elution.

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1y ago

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