Premium Options,3X FLAG® Peptide lyophilized powder

In the intricate world of molecular biology and biochemical research, precise tools are paramount for unlocking the secrets of proteins. Among these essential tools, the 3x Flag peptide Sigma F4799 stands out as a highly effective reagent for protein detection, purification, and competitive elution. This article delves into the multifaceted applications and characteristics of this vital peptide, providing in-depth information to support researchers in their endeavors.

The 3x Flag peptide is a synthetic peptide specifically designed to interact with anti-FLAG antibodies. Its defining feature is the repetition of the Asp-Tyr-Lys-Xaa-Xaa-Asp motif three times, creating a potent binding site. This structural characteristic is crucial for its efficacy in various laboratory techniques. The peptide itself is typically composed of 23 amino acid residues, and its molecular weight is approximately 2861.9 daltons. Different suppliers offer this peptide in various quantities, such as F4799-1MG, F4799-4MG, and F4799-25MG, catering to diverse research needs.

One of the primary applications of the 3x Flag peptide is in the competitive elution of 3xFLAG fusion proteins. When proteins are engineered with a 3X FLAG tag, they can be efficiently purified using affinity chromatography, often employing AntiFLAGBeads or FLAGM2 agarose beads. After the tagged protein binds to the antibody immobilized on the beads, the 3x Flag peptide can be introduced. Due to its high affinity for the antibody, the peptide competes with the 3X FLAG tagged protein for binding sites, thereby releasing the purified protein from the affinity matrix. This method is highly effective for eluting proteins under native conditions, preserving their biological activity. Researchers often find that the standard FLAG peptide will not effectively elute 3X FLAG fusion proteins, highlighting the necessity of the 3X FLAG peptide for this specific application.

The recommended working concentration for the 3x Flag peptide Sigma F4799 in elution protocols is typically 100 µg/ml. This concentration ensures efficient displacement of the tagged protein while minimizing potential non-specific interactions. The peptide is often supplied in a lyophilized powder form, which requires reconstitution before use. The purity of the 3X FLAG peptide is a critical factor for reliable results, with many high-quality preparations offering purity of ≥90% (HPLC/MS).

Beyond its role in elution, the 3x Flag peptide also finds utility in protein separation and purification workflows. Its ability to bind strongly to anti-FLAG antibodies allows for its use as a standard or control in assays involving FLAG-tagged proteins. Furthermore, the peptide can be employed in protein detection methods, aiding in the identification and quantification of proteins carrying the 3X FLAG tag. The sequence of the 3X FLAG peptide is often cited as MDYKDHDGDYKDHDIDYKDDDDK, showcasing the three repeats of the core motif. For instance, the 3x FLAG Peptide from Sigma is a well-regarded option for researchers.

The 3X FLAG\u00ae Peptide is a cornerstone for researchers working with FLAG and 3xFLAG tagged proteins. These tags have proven their versatility in numerous applications, including Western blotting, immunocytochemistry, immunoprecipitation, and flow cytometry. The use of the 3x Flag peptide in conjunction with antibodies like ANTI-FLAG M2 monoclonal antibody ensures robust and specific interactions, leading to reliable experimental outcomes. The peptide's effectiveness in competitive elution is a testament to its carefully engineered sequence and high affinity. The availability of high-purity 3X FLAG Peptide from various reputable suppliers, including Sigma, underscores its importance in the scientific community. When considering the 3x flag peptide sigma f4799 price, researchers should also factor in the purity and quantity offered to ensure the best value for their specific research needs. The 3X FLAG peptide is a critical component for anyone aiming for precise and efficient protein manipulation in their laboratory.