3X Flag-tag Peptide -20571ES

YeasenSKU: 20571ES25

Size: 25mg
Sale price$875.00

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Flag polypeptide is a hydrophilic polypeptide encoding 8 amino acids (DYKDDDDK). It can be used to detect specific anti-Flag monoclonal antibodies. In order to improve the sensitivity of detection, 3×Flag repeated polypeptide (3× flag-tag Peptide) has been developed. This 3×Flag repeated polypeptide contains 23 amino acids and can detect fusion proteins up to 10 fmol. 3×Flag repeated peptides have been widely used to purify Flag fusion proteins and competitively bind Anti-Flag monoclonal antibodies.
The recommended working concentration of 3×Flag repeated polypeptide is 100-400 μg/mL.


  • High stability
  • High purity
  • Short delivery


  • Purify Flag fusion proteins
  • Competitively bind Anti-Flag monoclonal antibodies.


Amino acid sequence H-Met-Asp-Tyr-Lys-Asp-His-Asp-Gly-Asp-Tyr-Lys-Asp-His-Asp-Ile-Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys-OH
Molecular Formula C120H169N31O49S
Molecular Weight 2861.87
Appearance White Powder
Purity ≥98%
Solubility Soluble in water (10mM) or 1% acetic acid


Components No. Name 20571ES11 20571ES25
20571 3×Flag-tag Peptide 4 mg 25 mg


The unopened products should be stably stored at -25℃ ~ -15℃ for 1 year. Storage solution should store at -85℃ ~ -65℃.

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