In the specialized field of molecular biology, the hexahistidine peptide—often referred to as the His-tag—serves as a fundamental tool for rese by F Khan·2006·Cited by 239—Thedouble-His6 peptidehas the potential to be a universal tag for protein immobilization and detection on arrays and single-step purification of proteins Read more archers. Having spent considerable time working with various protein expression systems, I have found that understanding the nuances of this specific sequence is essential for anyone involved in protein purification or structural analysis.
What is a Hexahistidine Peptide?
At its core, a hexahistidine peptide is a short, synthetic sequence composed of six consecutive histidine residues. This motif is widely recognized because it is a 6 x His tag used as a metal binding site for recombinant proteins. Because histidine contains an imidazole side chain that can coordinate with divalent metal ions, this peptide acts as a commonly used affinity tag made up of six histidine residues.
In my experience, the simplicity of this hexa-histidine sequenc Nonspecific proteins eluting with HIS-tagged peptide e is its greatest strength. Whether you are dealing with a standard 6X configuration or exploring a 10X His tag® peptide, the underlying principle remains the same: it facilitates specific interactions that allow for the isolation of target molecules from complex mixtures.
Mechanisms and Applications
The primary utility of this sequence lies in its role in affinity chrom by L Schoonen·2017·Cited by 28—Hexahistidinesare very common tags used in the affinity chromatography purification of recombinant proteins. Although these tags are solely atography. The His Tag Peptide is a hexapeptide with 6 histidines that exhibits high selectivity for immobilized metal ions, such as Nickel (Ni2+) or Cobalt (Co2+). It is a peptide tag that is often used for affinity purification of recombinant proteins, providing a robust method to separate expressed proteins from host cell contaminants.
When I look at the structural data, Hexa His is an amino acid sequence consisting of 6 His residues in a row that provides a stable anchor. It is a short peptide composed of six consecutive histidine residues that functions effectively even in denaturing conditions, which is a s Nonspecific proteins eluting with HIS-tagged peptide ignificant advantage when working with proteins tha anti-Hexahistidine Peptide 6HIS (HHHHHH) Epitope Tag t are otherwise difficult to solubilize.
Key technical takeaways include:
* Metal Coordination: The hexahistidine tag coordinates with metal ions in the stationary phase of a chromatography column.
* Fusion Tagging: It is used as a fus Nonspecific proteins eluting with HIS-tagged peptide ion tag for immunoaffinity chromatography, allowing for the detection of proteins using specific anti-His antibodies.
* Structural Orientation: Hexahistidine ( Hexahistidine (His6)-tag dependent protein dimerization HIS6) refers to a peptide chain that can be incorporated into a protein molecule to consistently orient it on a surface, which is critical for surface plasmon resonance or array-based assays.
Research Considerations and Best Practices
It is important to emphasize that these materials are strictly laboratory products for research use only. During my own bench work, I have observed that the 6×His Tag Peptide shows remark The use of twohexahistidinetags combined with Co2+(or Zn2+) can reduce the binding affinity for many of these proteins relative to thehis-tagged protein. If Read more able stability. However, one must always verify the purity of the synthetic product—typically, high-quality variants like Hexa-His TFA are preferred to ensure that the chemical profile (such as the trifluoroacetate salt form) does not interfere with downstream assays.
Furthermore, the hexahistidine motif is not just a passive tag. There are instances where a double-His6 peptide is utilized to provide higher affinity binding, which can be beneficial in applications requiring more stringent washing conditions. Whether you are using a 6X His Peptide for simple purification or studying more complex interactions like 6-residue His sequence used for GM2 gangliosides degradation, the precision of the sequence design is paramount.
Final Thoughts on the His Tag
The hexahistidine sequence remains a cornerstone of modern biotechnology. Its ability to act as a metal binding site for the recombinant protein has streamlined workflows that were once incredibly labor-intensive. By adhering to standardized protocols and ensuring that you are using the correct hexa-histidine peptide variant for your specific experimental goals, you can achieve highly reproducible results in protein isolation and characterization.
For those researching Hexahistidine peptide for sale or comparing the Hexahistidine peptide price, always prioritize suppliers who provide comprehensive analytical data, such as HPLC purity reports, to ensure the integrity of your research project.