In the landscape of molecular biology research, the v5 peptide tag has established itself as an indispensable tool for protein analysis. As someone who follows laboratory advancements closely, I have observed how this specific 14-amino acid polypeptide has become a standard in recombinant protein studies. Whether you are performing immunoprecipitation or protein purification, understanding the nuances of this tag is essential for high-quality experimental outcomes.
Technical Specifications and Composition
The v5 tag is a short peptide sequence derived from the P and V proteins of the paramyxovirus simian virus 5 (SV5). Its primary utility lies in its ability to be genetically grafted onto a recombinant protein, acting as an artificial epitope for specialized antibodies.
The standard sequence: Gly-Lys-Pro-Ile-Pro-Asn-Pro-Leu-Leu-Gly-Leu-Asp-Ser-Thr defines the core epitope. Researchers often utilize this V5 tag peptide with a molecular weight typ V5 Epitope Tag Peptide - Protein Detection Tool ically reported around 1421.64 V5-Tag: Properties | Proteintech Group to 1524.8 Da, depending on the specific synthesis method and salt form, such as V5 Epitope Tag Peptide (TFA).
Practical Applications in the Laboratory
The V5-tag is a short peptide tag for detection and purification of proteins, and it has been extensively used for various purposes due to its small size and high specificity. When working in the lab, I have found that the V5 tag antibody is exceptionally reliable. It recognizes the artificially engineered V5 epitope, allowing researchers to visualize or isolate the target protein across various platforms:
* Western Blot: The antibody identifies the V5 epitope tag, providing clear bands even in complex lysates.
* ELISA: Sensitive det V5 Epitope Tag Peptide ection of tagged proteins.
* Immunoprecipitation: The V5 peptide can be used to competitively elute V5-tagged fusion proteins from immobilized anti-V5 magnetic beads, a process that is highly efficient with high-purity V5 Epitope Tag Peptide.
* Immunofluorescence: The V5 tag antibody detects V5 tag protein by immunofluorescent analysis, essential for determining cellular localization.
Experimental Best Practices
For those preparing to utilize this tool, standard protocols are vital. For instance, when using the peptide for elution, it is common to dilute V5-peptide stock to 0.72 mg/mL (0.5 mM) in PBS. This concentration ensures effective competition for the antibody binding site.
Furthermore, the V5 tag antibody is often prepared by immunizing synthetic peptide coupled to KLH, which ensures high affinity. Because the V5 tag is used to label a protein of interest, it is compatible with a wide range of secondary reagents and reacts with Mouse, Rabbit, Goat, Chicken, Sheep models depending on the host species of the primary antibody used.
Important Considerations
It is i V5-Tag: Properties mperative to note that any V5 Epitope Tag Peptide purchased is a laboratory product for research use only. It is not for personal consumption, and attempting to u V5 Tag Peptide se such reagents for anything other than controlled, in vitro research is ineffective and potentially dangerous. Always verify that your V5 Tag peptide is sourced fr V5-Tag: Properties om reputable suppliers to ensure the purity required for consistent dat 19 Oct 2020—TheV5-tagis a popular epitopetagderived from the P and V proteins of the Simian Virus 5 (SV5) that is used totagproteins in yeast, Read more a.
In summary, the V5 tag remains a cornerstone of proteomics. Whether you are dealing with peptide sequences genetically grafted onto a recombinant protein or developing a new peptide V5 detection assay, the consistency of this tag provides the reliability needed for modern genetic studies. By adhering to established protocols, you can ensure your research remains robust and reproducible.