Zn-NTA


Purification Resins
Zn-NTA is a term that refers to a zinc Ion that has been coupled Nitrilotriacetic acid (NTA). Zn-NTA can then be coupled to agarose or magnetic beads for Immobilized Metal Chelate Affinity Chromatography, short IMAC. This is a purification method for two purposes.
  1. The purification of his tagged proteins
  2. The enrichment of zinc finger proteins
Cube Biotech offers multiple different Zn-NTA based products for your specific assay.

Overview of Cube Biotech's Zn-NTA products for his tag protein purification.


Features

Usage
  • Specific binding and purification of 6x his-tagged proteins
  • zinc finger protein enrichment
Specifity Affinity to His-tagged proteins and zinc finger proteins
Bead size
  • 40 µm (agarose resin)
  • 30 µm (magnetic beads)
Binding capacity Depending on the application
Metal Ion capacity >12 µeqv Zn2+/mL.
Chelator stability Stable in buffer containing 10 mM DTT and 1 mM EDTA
Bead Ligand Zn-NTA

Zn-NTA products by Cube Biotech were successfully used in the following publications:

 ProteinYearAuthorProduct
HrpII 2017  Bauer W.S., Richardson K.A., Adams N.M., Ricks K.M., Gasperino D.J., Ghionea S.J., Rosen M., Nichols K.P., Weigl B.H., Haselton F.R., Wright D.W., 1 Zn-NTA MagBeads

Purification of zinc-finger proteins

When purifying his-tagged zinc-finger proteins which require a bound zinc ion for activity, it is often advisable to use Zn-IMAC instead of Ni-IMAC materials. Zinc matrices provide a high specificity for his-tagged protein purification (see Fig. 1) and an exchange of zinc bound to the active site of the protein by nickel is avoided (3). At the same time, non-tagged zinc-finger proteins can be purified using zinc IMAC matrices, simply by their affinity to this metal (2).

Different metal ions confer different binding affinity and specificity

Depending on the coupled metal ion the conditions of a His tag protein purification shift. The coupled metal ion influences the balance between protein affinity to the His tagged protein and the specificity of the purification. Zinc as the chelating ion leans more to the specific possibilities, for purer protein.
metal_ions_protein purification affinity
Fig. 1: Affinity and specificity of metal ions commonly used for IMAC. Loading an IMAC resin with different metal ions can adjust the affinity and specificity to optimize the purity and yield of a purified protein.

References

  1. Bauer, Westley S et al. “Rapid concentration and elution of malarial antigen histidine-rich protein II using solid phase Zn(II) resin in a simple flow-through pipette tip format.” Biomicrofluidics vol. 11,3 034115. 2 Jun. 2017, doi:10.1063/1.4984788
  2. Vorácková, I. et al. Purification of proteins containing zinc finger domains using immobilized metal ion affinity chromatography. Protein Expr. Purif. (2011) 79(1):88-95.
  3. Block et. al. Immobilized-metal affinity chromatography (IMAC) a review. Methods Enzymol. (2009), 463:439-73.
Top seller
PureCube Zn-NTA Cartridge PureCube Zn-NTA Cartridge
Article number: 31601-Zn
PureCube Zn-NTA Agarose PureCube Zn-NTA Agarose
Article number: 31403-Zn
PureCube Zn-NTA MagBeads PureCube Zn-NTA MagBeads
Article number: 31501-Zn
PureCube Compact Cartridge Zn-NTA PureCube Compact Cartridge Zn-NTA
Article number: 31602-Zn
Zn-NTA
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PureCube Zn-NTA Cartridge PureCube Zn-NTA Cartridge
Cartridge for low pressure chromatography (FPLC), packed with 1 ml NTA Agarose, loaded with zinc (II) chloride
Article number: 31601-Zn
Sales price: From €37.00 *
PureCube Zn-NTA Agarose PureCube Zn-NTA Agarose
Cube Biotech offers Zinc-NTA agarose resin for His Tag purification and zinc finger protein enrichment.
Article number: 31403-Zn
Sales price: From €107.00 *
PureCube Zn-NTA MagBeads PureCube Zn-NTA MagBeads
1 ml 25% NTA magnetic beads, loaded with zinc (II) chloride
Article number: 31501-Zn
Sales price: From €68.00 *
PureCube Compact Cartridge Zn-NTA PureCube Compact Cartridge Zn-NTA
Compact Cartridge for low pressure chromatography (FPLC), packed with 1 ml NTA Agarose, loaded with zinc (II) chloride
Article number: 31602-Zn
Sales price: From €37.00 *
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