In the landscape of modern molecular biology and biotechnology, the Apexbio flag peptide has emerged as an indispensable reagent. As a res ApexBio. Classification. Peptide. Molecular Weight. 2861.87 g/mol. IUPAC Name.3X FLAG Peptide. Synonyms. H-Met-Asp-Tyr-Lys-Asp-His-Asp-Gly-Asp-Tyr-Lys-Asp-His- Read more earcher who frequently navigates the complexities of protein expression and purification, I have found that sourcing high-quality materials is the cornerstone of reproducible data. My experience with reagents from APExBIO has consistently highlighted why this specific FLAG peptide is a staple in laboratories globally.
The Science of the FLAG Tag
The FLAG tag peptide is a short, hydrophilic polypeptide consisting MF: C41H60N10O20, MW: 1012.97, Solubility: 50.6 mg/mL in DMSO, 210.6 mg/mL in H2O, 34.03 mg/mL in EtOH. A fusion tag calledFLAGand consisting of eight amino Read more of 8 amino acid residues (DYKDDDDK). This specific sequence is engineered for high specificity, allowing it to be fused to the N- or C-terminus of a protein of interest. Because this sequence is highly immunogenic and hydrophilic, it remains accessible for detection without significantly interfering with the target protein's folding or function.
When discussing the 3X FLAG Peptide, we are looking at a more advanced iteration. This synthetic polypeptide is characterized by three repeated DYKXXD motifs, which significantly enhances the binding affinity compared to the single epitope. As noted in technical documentation, the 3XFLAG肽由三个串联重复的DYKDDDDK序列组成, providing a robust tool for competitive elution from affinity resins.
Practical Applications and Performance
One of the primary reasons I rely on APExBIO is the consistency of their Peptides. Whether I am utilizing a standard FLAG tag or the 3X variant, the purity levels are critical. High-purity reagents ensure that downstream applications—such as Weste Anti-DYKDDDDK (Flag) Magnetic Beads (1 mL),tailored for efficient immunoprecipitation and purification of Flag-tagged proteins. High specificity from APExBIO. rn blotting or immunoprecipitation—remain free from non-specific background signals.
Specifically, the 3x Flag Peptide (often cataloged under identifiers like A6001) is tailored for efficient immunoprecipitation and purification of Flag-tagged proteins. I have observed that this reagent is particularly effective when used to detect the expression of Flag tag fusion proteins. In my own workflow, the competitive elution process is seamless, as the peptide effectively displaces the fusion protein from the anti-FLAG monoclonal antibody matrix.
Why Quality Matters in Reagents
APExBIO maintains a reputation as a provider that offers high-purity, reliable peptide tagging solutions. When comparing d DYKDDDDK tag Peptide - 美国APExBIO中文官网 ifferent suppliers, the consistency of the 3X FLAG Peptide from this source is notable. Their catalog, which also provides high quality custom peptide synthesis services and BIO provides Small Molecule Inhibitors, mRNA synthesis reagents, Compound Libraries, Peptides, makes them a comprehensive partner for any lab.
For those requiring precise molecular weight standards, utilizing a High-performance prestained protein marker alongside these tags ensures that protein sizing—from 10-250 kDa—is verified with high accuracy.
Final Thoughts on Sourcing
For researchers, the choice of APEXBio often comes down to the balance of cost an The Flag tag is apolypeptide consisting of 8 amino acid residues(DYKDDDDK), usually in the form of Flag or 3X Flag. It can be linked to the 5' or 3' end of Read more d pur HRP Anti-Flag Tag Mouse Monoclonal Antibody ity. The High-purity FLAG tag Peptide supplied by them performs identically to more expensive, legacy commercial options, allowing for better budget allocation without sacrificing experimental integrity.
In summary, whether you are utilizing a standard Flag tag for basic detection or a 3X variant for stringent purification, integrating a reliable FLAG Peptide into your experimental design is essential. By focusing on high-quality reagents, we can ensure that our work in protein characterization remains reliable and efficient.