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DYKDDDDK Tag Antibody (Binds to same epitope as Sigma's Anti-FLAG® M2 Antibody) #2368

Applications Reactivity Sensitivity Source
W IP IHC-P IF-IC All Transfected Only Rabbit

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  IHC-P=Immunohistochemistry (Paraffin)  IF-IC=Immunofluorescence (Immunocytochemistry)
Reactivity Key: All=All species expected

Specificity / Sensitivity

DYKDDDDK Tag Antibody detects exogenously expressed DYKDDDDK proteins in cells. The antibody recognizes the DYKDDDDK peptide (the same epitope recognized by Sigma's Anti-FLAG® antibodies) fused to either the amino- or carboxy-terminus of targeted proteins.The binding specificity of this antibody is NOT dependent on the presence of divalent metal cations.

Source / Purification

Polyclonal antibodies are produced by immunizing rabbits with a synthetic DYKDDDDK peptide (KLH-coupled). Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from COS or 293T cells, mock transfected (lane 1) or expressing DYKDDDDK-tagged p73 (lane2), DYKDDDDK-tagged FKHRL1 (lane 3) or truncated DYKDDDDK-tagged huntingtin (lane 4), using DYKDDDDK Tag Antibody.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded Cos cells, control (left) or DYKDDDDK-FKHRL1 transfected (right), using DYKDDDDK-tag antibody.

IF-IC

IF-IC

Confocal immunofluorescent images of COS cells expressing DYKDDDDK-tagged FKHRL1 (left) or without transfected protein (right), labeled with DYKDDDDK Tag Antibody.


Background

Epitope tags are useful for the labeling and detection of proteins using immunoblotting, immunoprecipitation and immunostaining techniques. Due to their small size, they are unlikely to affect the tagged protein's biochemical properties.

The DYKDDDDK peptide has been used extensively as a general epitope tag in expression vectors and consists of only eight amino acids. This peptide can be expressed and detected with the protein of interested as an amino-terminal or carboxy-terminal fusion (1).

  1. Brizzard, B. L. et al. (1994) Biotechniques 16, 730-735.

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This product is for in vitro research use only and is not intended for use in humans or animals. This product is not intended for use as therapeutic or in diagnostic procedures.

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