cOmplete™ His-Tag Purification Column
ROCHE/COHISC-RO - Prepacked, ready-to-use chromatography column
Synonym: Purification column; cOmplete; his-tag; protein purification
Product Type: Chemical
Tight binding of nickel visualized. Before (left) and after (right) photos of cOmplete His-Tag Purification Resin and Columns after 5 times reuse without recharging. The resin remains blue both before and after reusing, indicating that there is little to no nickel leakage.
Efficient purification of His6- and His10-tagged proteins. Two milliliters of native lysate containing moderate amounts of His6-MBP (A) or His10-T4 DNA Ligase (B), were incubated for 2 hours with 50 or 40 μl of cOmplete His-Tag Purification Resin in buffer A (150 mM NaCl, 50 mM Tris-HCl pH 7.5, 2 mM DTT) containing 5 or 10 mM imidazole, respectively. Unbound material was washed off with the same buffers and eluted in buffer A supplemented with 400 mM imidazole. Result: The cOmplete His-Tag Purification Resin produces highly pure target proteins after just one run.
Protein-binding performance with His6 CFP. cOmplete His-Tag Purification Resin (blue columns) with 10 mM DTT and EDTA is reused without nickel recharging alongside Resin G (grey columns) with 1 mM EDTA and 5 mM DTT (as specified in manufactor′s package insert). Another competing product, Resin Q (not shown), did not bind any protein at all.
Loss of resin Ni ions under stringent conditions. One milliliter each of cOmplete His-Tag Purification Resin and 2 commercially available resins were incubated in 9 mL of a buffer containing 50 mM NaH2PO4, 300 mM NaCl, pH 8.0, 10 mM EDTA, 10 mM DTT, and 500 mM imidazole. The cOmplete Resin lost less than 1 percent of nickel ions.
| capacity | ≥40 mg/mL, resin binding capacity |
| manufacturer/tradename | Roche |
| packaging | pkg of 5 x 1 mL (columns (06781543001)) |
| pkg of 5 mL (column (06781535001)) | |
| parameter | 1,420 cm/hr max. flow rate |
| storage temp. | 2-8°C |
| Compatibility: | Compatibility for long term storage: 20% ethanol, pH 4.0 to pH 9.0 Compatibility during chromatography: The resin is compatible with 10mM EDTA, 10mM DTT during the purification (1 hour incubation), 6M guanidinium-HCl, 8M urea, pH 2.0 to pH 14.0. Compatibility during cleaning: 4% SDS Form cOmplete His-Tag Purification Resin filled in columns, pre-charged with Ni2+ stored in 20% ethanol. |
| Features and Benefits: | cOmplete His-Tag Purification Columns are available in 2 sizes and prepacked with cOmplete His-Tag Purification Resin. The cOmplete His-Tag Purification Resin is an innovative high-capacity IMAC matrix (Immobilized Metal Affinity Chromatography) for convenient single-step purifications of His-tagged proteins from total lysates. Roche′s propriety nickel-chelate chemistry ensures extraordinary compatibility with commonly used reducing agents such as DTT, chelating metalloprotease inhibitors such as EDTA, and a wide range of buffer substances and salt conditions. The wide choice of compatible ingredients allows optimization of buffers for maximum protein stability and solubility. cOmplete His-Tag Purification Columns are fully compatible with standard purification systems such as ÄKTA Systems (Cytiva). • Use the buffer conditions best suited to your protein Keep your protein comfortable and let it, not your purification resin, determine whether you use DTT, EDTA, or other buffer substances. • Repeatedly obtain highly pure protein Single step purification without resin recharging. • Protect your protein from toxic nickel Reduce protein oxidation and aggregation caused by resins that leach nickel. • Work in a safe and eco-friendly environment Avoid handling of toxic nickel and completely eliminate disposal costs. |
| General description: | The most common technique in affinity purification of proteins involves engineering a sequence of 6 to 14 histidines into the N- or C-terminal (or even on an exposed loop) of the protein. Such polyhistidine stretches bind strongly to divalent metal ions such as nickel and cobalt. This effect can be used to separate proteins. Metal ions can be immobilized on a matrix using a chelator, which still allows the ion to interfere with the polyhistidine tag of the protein. When these his-tagged proteins are passed through a column containing immobilized metal ions, the proteins bind via the tag to the column. Nearly all untagged proteins pass through the column. The protein is released from the column by elution with either imidazole, which competes with the polyhistidine tag for binding to the column, or by a decrease in pH, which decreases the affinity of the tag for the resin. While this procedure is generally used for the purification of recombinant proteins with an engineered affinity tag, it can also be used for natural proteins with an inherent affinity for divalent cations. |
| Legal Information: | cOmplete is a trademark of Roche |
| Other Notes: | Recommended volumetric flow rate: 5 ml column (06 781 535 001): 2.5 to 10 ml/minute 1 ml column (06 781 543 001): 0.5 to 2.0 ml/minute The volumetric flow rate is a function of the column′s cross section. Recommended imidazole concentration for load/wash: Nonspecific binding of proteins without a His-tag is low. Use up to 5 mM imidazole in load and/or wash buffers. If establishing a new assay for purification of His-tag proteins with cOmplete His-Tag Purification Columns do not use imidazole. If, e.g., the purity of the His-tag protein needs to be improved following this first step, use imidazole in a final concentration of up to 5mM in a second step. Recommended imidazole concentration for elution: Up to 500mM Please note: In contrast to other available resins, bound His-tagged protein typically elutes from cOmplete His-Tag Purification Columns with a lower imidazole concentration, e.g., 25 to 45mM. Binding capacity The binding capacity of the resin to various types of proteins may vary according to the protein characteristics such as the size of the protein. cOmplete His-Tag Purification Columns bind with a high specificity to the polyhistidine-tagged protein. As a consequence, the binding kinetics may appear to be different when compared to conventional metal chelate matrices. Full capacity of cOmplete His-Tag Purification Columns can be achieved by allowing more time for the protein to bind to the resin by lowering the flow rate during the chromatography purification procedure. |
| Other Notes: | For life science research only. Not for use in diagnostic procedures. |
| Packaging: | • 06781535001 (5 mL column; 1 column containing 5 ml of cOmplete His-Tag Purification Resin) • 06781543001 (5 x 1 mL columns; 5 columns containing 1 ml of cOmplete His-Tag Purification Resin) |
| Symbol |    GHS02,GHS07,GHS08 |
| Signal word | Warning |
| Hazard statements | H226 - H317 - H319 - H351 |
| Precautionary statements | P201 - P210 - P261 - P280 - P303 + P361 + P353 - P370 + P378 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | 93.2 °F |
| Flash Point(C) | 34 °C |
| Storage Temp. | 2-8°C |
| UNSPSC | 41116133 |