Description | GenScript High Affinity Ni-Charged Resin FF is an 6% highly cross-linked agarose medium covalently coupled to a chelating agent that binds Ni2+ by four coordination sites for high-affinity purification of polyhistidine-tagged recombinant proteins (see Figure 1) [1]. High Affinity Ni-Charged Resin FF has low Ni2+ leakage, high protein-binding capacity and stability, and is compatible with a wide range of additives used in protein purification. This makes High Affinity Ni Charged Resin FF the excellent choice for high performance purification of polyhistidine-tagged proteins. | |||||||||||||||||||||||||||||||||
Key Features | Characteristics of High Affinity Ni-Charged Resin FF
1 Dynamic binding capacity conditions: Sample: 5 mg/mL (histidine)6-tagged pure proteins (Mr 43 000) in binding buffer (capacity at 10% Breakthrough) Column volume: 1 mL Retention time: 3min Flow rate: 0.333 mL/min Binding buffer: 20 mM sodium phosphate, 500 mM NaCl, 10 mM imidazole, pH 7.4 Elution buffer: 20 mM sodium phosphate, 500 mM NaCl, 250 mM imidazole, pH 7.4 Note: Dynamic binding capacity is protein-dependent. Reagents Compatible with High Affinity Ni-Charged Resin FF
? Tested for 1 week at 40°C. ? The strong chelator EDTA has been used successfully in some cases at 1 mM. Generally, chelating agents should be used with caution (and only in the sample, not in buffers). Any metal ion stripping may be counteracted by addition of a small excess of MgCl2 before centrifugation/filtration of the sample. Note that stripping effects may vary with applied sample volume. |
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Product Information |
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Storage | Store in 20% ethanol at 2°C to 8°C. Do not freeze. |
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