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$150 50ul
$250 100ul
$350 200ul
$1200 1ml

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  • Product Name
    Flag-Tag Antibody
  • Catalog No.
  • RRID
  • Source
  • Application
  • Reactivity
  • Concentration

Product Information

Alternative Names:Expand▼

DDDDK epitope tag; DDDK; ddk; DYKDDDDK; DYKDDDDK epitope tag; DYKDDDDK tag; ECS epitope tag; ECS tag; Enterokinase Cleavage Site epitope tag; Enterokinase Cleavage Site tag; FLAG; FLAG tag antibody


WB: 1:3000-1:10000, IF/ICC: 1:200, IP 1:200, IHC 1:50-1:200
*The optimal dilutions should be determined by the end user.







Clone Number:





Please cite this product as: Affinity Biosciences Cat# T0003, RRID:AB_2839412.





Storage Condition and Buffer:

Mouse IgG1 in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.Store at -20 °C.Stable for 12 months from date of receipt.

Immunogen Information in 3D


A synthetic peptide DYKDDDDK coupled to KLH.

Molecular Weight:

Observed Mol.Wt.: Not available.
Predicted Mol.Wt.: Not available.

Subcellular Location:

Endoplasmic reticulum membrane. Microsome membrane.


FLAG tag Mouse mAb is part of the series of Tag antibodies, the excellent quality in the research. FLAG tag antibody is a highly sensitive and affinity PAB applicable to FLAG-tagged fusion protein detection. FLAG tag antibody can detect FLAG tags in internal, C-terminal, or N-terminal recombinant proteins.

Reference Citations:

1). Matsuoka TA et al. Mafa Enables Pdx1 to Effectively Convert Pancreatic Islet Progenitors and Committed Islet α-Cells Into β-Cells In Vivo. Diabetes 2017 May;66(5):1293-1300 (PubMed: 28223284) [IF=7.720]

2). Ye F et al. circFBXW7 Inhibits Malignant Progression by Sponging miR-197-3p and Encoding a 185-aa Protein in Triple-Negative Breast Cancer. Mol Ther Nucleic Acids 2019 Aug 14;18:88-98 (PubMed: 31536884) [IF=7.032]

3). Ma Y et al. SIRT5-mediated SDHA desuccinylation promotes clear cell renal cell carcinoma tumorigenesis. Free Radic Biol Med 2019 Apr;134:458-467 (PubMed: 30703481) [IF=6.170]

4). Liu W et al. Micheliolide Ameliorates Diabetic Kidney Disease by Inhibiting Mtdh-mediated Renal Inflammation in Type 2 Diabetic db/db Mice. Pharmacol Res 2019 Oct 24:104506 (PubMed: 31669149) [IF=5.893]

5). Wang C;Jing J;Hu X;Yu S;Yao F;Li Z;Cheng L; et al. Gankyrin activates the hedgehog signalling to drive metastasis in osteosarcoma. J Cell Mol Med 2021 Jun 5. (PubMed: 34089292) [IF=4.658]

6). Wang C;Jing J;Hu X;Yu S;Yao F;Li Z;Cheng L; et al. Gankyrin activates the hedgehog signalling to drive metastasis in osteosarcoma. J Cell Mol Med 2021 Jun 5. (PubMed: 34089292) [IF=4.486]

7). Zhang Y et al. Treatment of diabetes mellitus-induced erectile dysfunction using endothelial progenitor cells genetically modified with human telomerase reverse transcriptase. Oncotarget 2016 Jun 28;7(26):39302-39315 (PubMed: 27283992)

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Catalog Number :

(Blocking peptide available as T0003-BP)

Price/Size :

Tips: For phospho antibody, we provide phospho peptide(0.5mg) and non-phospho peptide(0.5mg).

Function :

Blocking peptides are peptides that bind specifically to the target antibody and block antibody binding. These peptide usually contains the epitope recognized by the antibody. Antibodies bound to the blocking peptide no longer bind to the epitope on the target protein. This mechanism is useful when non-specific binding is an issue, for example, in Western blotting (immunoblot) and immunohistochemistry (IHC). By comparing the staining from the blocked antibody versus the antibody alone, one can see which staining is specific; Specific binding will be absent from the western blot or immunostaining performed with the neutralized antibody.

Format and storage :

Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 10 mg/ml.The purity is >90%,tested by HPLC and MS.Storage Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.

Precautions :

This product is for research use only. Not for use in diagnostic or therapeutic procedures.

IMPORTANT: For western blots, incubate membrane with diluted antibody in 5% w/v milk , 1X TBS, 0.1% Tween®20 at 4°C with gentle shaking, overnight.

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