In the specialized field of molecular biology, the hexahistidine peptide—often referred to as the His-tag—serves as a fundamental tool for researchers. 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 sequence is its greatest strength. Whether you are dealing with a standard 6X configuration or exploring a 10X His tag 6X His Peptide (25mg) ® peptide, the underlying principle remains by J Wu·1999·Cited by 213—Here we demonstrate that the presence of aHis-tag partially restores the ability of pi200(30.5) to dimerize in solution and bind to an IR in dimeric form.Read more the same: it facilitates specific interactions that allow for the isolation of target molecules from complex mixtures.
Mechanisms and Applications
The primary utility In conclusion, we have developed a model alanine-richpeptidetagged with ahexa-histidinesequence that self-assembles into amyloid fibrils. Remarkably, the Read more of this seque Hexa His tag peptide nce lies in its role in affinity chromatography. 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 significant advantage when working with proteins that 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 use This product contains sodium azide, which has been classified as Xn (Harmful), in European Directive 67/548/EEC in the concentration range of 0.1-1.0 %.Read more d as a fusion tag for immunoaffinity chromatography, allowing for the detection of proteins using specific anti-His antibodies.
* Structural Orientation: Hexahistidine (HIS6) refers to a pep anti-Hexahistidine Peptide 6HIS (HHHHHH) Epitope Tag tide 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 Hexa-His (6X His Tag) is acommonly used affinity tag made up of six histidine residues. HEXA-HIS can bind to affinity chromatography media containing Read more my own bench work, I have observed that the 6×His Tag Peptide shows remarkable stability. However, one must always verify the purity of the synthetic product—typically, high-quality variants like Hexa-Hi The amino acid sequence consisting of 6Hisresidues in a row, calledHis-Tag, would act as a metal binding site for a recombinant protein.Read more s 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.