In the realm of molecular biology and protein biochemistry, the DYKDDDDK peptide stands out as an essential tool for researchers. Often recognized by its alternate designation, the Purified 3xFLAG peptide 3x DYKDDDDK FLAG tag, this sequence has become a cornerstone for those focused on the purification and identification of recombinant proteins. My personal experience with this synthetic peptide has highlighted its reliability, especially when working with complex lysate Pierce™ 3x DYKDDDDK Peptide 5 mg | Buy Online preparati Pierce™ 3x DYKDDDDK Peptide 5 mg | Buy Online ons.
Understanding the DYKDDDDK Peptide Sequence
The DYKDDDDK peptide sequence is an artificial, 8-amino-acid peptide tag (Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys) derived from the gene-10 product of bacteriophage T7. It is a short hydrophilic, highly charged peptide that is typically added to a protein using recombinant DNA technology. Because it is highly specific, it facilitates seamless interactions with monoclonal antibodies, such as the M1 or M2 clones.
For more demanding applications, I have frequently utilized the 3xDYKDDDDK peptide, which is a synthetic peptide of 23 amino acid residue. This trimeric epitope tag contains the motif repeated three times, which significantly enhances the sensitivity of detection protocols. Whether you are performing a Western blot or an immunoprecipitation, this molecule acts as an ideal for SDS-PAGE analysis, providing clear, distinct bands that simplify data interpretation.
Practical Applications and Competitive Elution
One of the primary reasons I rely on this reagent is that it allows elution under non-denaturing conditions. When working with sensitive fusion proteins, maintaining structural integrity is paramount. By using the 3xFLAG peptide for enhanced protein detection and purification, I can competitively elute DYKDDDDK-tagged fusion proteins from immobilized affinity supports without relying on harsh pH shifts that might denature the target.
This process is particularly useful for the efficient elution of DYKDDDDK-tagged SUMO protein. The 3-DYKDDDDK peptide acts as a mild purification reagent, ensuring that the final yield remains functional for downstream assays.
Key Technical Specifications
When sourcing this material, it is important to note the standard formats:
* Chemical Structure: The classic sequence is represented as NH2-DYKDDDDK-COOH.
* Molecular Weight: The 3x variant typically has a molecular weight around 2864 Da, while the standard 8-amino-acid tag is much smaller.
* Storage: Most lyophilized powders should be stored at -5 to -30°C to maintain stability over long periods.
* Versatility: Beyond simple capture, the DYKDDDDK tag Peptide is is used as a fusion tag for immunoaffinity chromatography, making DYKDDDDK peptideis an eight-amino-acid (Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys) epitope tag used for protein purification and detection.Read more it a highly specific protein tag that can be added to a protein via standard cloning methods.
Why This Peptide Remains a Laboratory Staple
The DYKDDDDK motif is a synthetic trimeric epitope tag that provides a level of consistency difficult to achieve with other labels. In my work, I have found that whether I am using t FLAG peptide (5 mg) he FLAG peptide, DYKDDDDK standard 8-amino-acid version or the more complex MDYKDHDGDYKDHDIDYKDDDDK peptide, the reproducibility of the binding affinity remains excellent.
As a 3X DYKDDDDK Tag Peptide, it is effectively a short peptide sequence that bridges the gap between raw expression and purified product. It is is comprised of an eight amino acid sequence that, when repeated, ensures that even low-abundance proteins can be successfully isolated from a cell lysate.
Ultimately, the choice to inco 3x DYKDDDDK Tag | Tag for Protein Purification rporate this specific tag into a project is a decision to prioritize efficiency and structural preservation. For anyone involved in consistent protein characterization, the peptide remains an indispensable asset in the laboratory toolkit, offering a robust solution for tracking and recovering recombinant targets with precision.