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  • F2555 - Monoclonal ANTI-FLAG® antibody produced in rabbit

F2555 Sigma-Aldrich

Monoclonal ANTI-FLAG® antibody produced in rabbit

clone SIG1-25, ascites fluid

Synonym: Anti-ddddk, Anti-dykddddk



Related Categories Alphabetical Index, Antibodies, Antibodies and Conjugates, Antibodies to Peptide and Protein Fusion Tags, FK-FO,
conjugate   unconjugated
clone   SIG1-25, monoclonal
biological source   rabbit
application(s)   immunocytochemistry: 1:125-1:250 using transiently transfected cells expressing FLAG (sequence at the N-terminus)-tagged protein fixed with paraformaldehyde/Triton X-100
  indirect ELISA: suitable
  western blot: 1:250-1:500 using extracts of transiently transfected cells expressing FLAG (sequence at the N-terminus)-tagged protein
shipped in   dry ice
storage temp.   −20°C
antibody form   ascites fluid
isotype   IgG
antibody product type   primary antibodies
immunogen sequence   DYKDDDDK


General description

This rabbit ANTI-FLAG antibody is produced from the hybridoma SIG1-25. The hybridoma is derived by the fusion of myeloma cells and splenocytes from rabbits immunized with the FLAG® peptide sequence conjugated to KLH.


This monoclonal antibody recognizes the FLAG sequence at the N-terminus


FLAG peptide sequence DYKDDDDK


Antibody suitable for use in immunoblotting,immunocytochemistry, and indirect ELISA.

Browse additional application references in our FLAG® Literature portal.

Physical form

Provided as ascites fluid containing 15 mM sodium azide as a preservative.

Legal Information

ANTI-FLAG is a registered trademark of Sigma-Aldrich Co. LLC

FLAG is a registered trademark of Sigma-Aldrich Co. LLC

Triton is a trademark of The Dow Chemical Company or an affiliated company of Dow

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products.Once you log onto our website, you will find the price and availability displayed on the product detail page.You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 orview local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
Why should I use Product No. F2555, Monoclonal ANTI-FLAG® antibody produced in rabbit?
The main application for Product F2555 rabbit monoclonal is for immunoblotting after immunoprecipitation with M2, which is a mouse antibody. This enables using a secondary antibody (anti-rabbit) that will not bind the M2 mouse heavy (50 kD) and light chains (25 kD).
Will Product No. F2555, Monoclonal ANTI-FLAG® antibody produced in rabbit - clone SIG1-25,recognize an internal FLAG tag protein?
F2555 will recognize N-terminal and C-terminal FLAG fusion proteins.
What positive controls can be used for immunoblotting with Product F2555, Monoclonal ANTI-FLAG® antibody produced in rabbit - clone SIG1-25?
Two of the FLAG-tagged proteins offered by Sigma-Aldrich are the Amino-terminal FLAG-BAP fusion protein (Product No. P7582) and the Carboxy-terminal FLAG-BAP fusion protein (Product No. P7457). Both of these proteins should work with the F2555 rabbit ANTI-FLAG.
Is Product F2555 a monoclonal or polyclonalFLAG® antibody?
F2555 is a monoclonal antibody, raised in rabbits. [Note: Nearly all of the monoclonal antibodies sold by Sigma-Aldrich are raised in mice.]
My question is not addressed here, how can I contact Technical Service for assistance?
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