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  • F3040 - Monoclonal ANTI-FLAG® M1 antibody produced in mouse

F3040 Sigma

Monoclonal ANTI-FLAG® M1 antibody produced in mouse

clone M1, purified immunoglobulin, buffered aqueous solution

Synonym: Anti-ddddk, Anti-dykddddk



Related Categories Alphabetical Index, Antibodies, Antibodies to Peptide and Protein Fusion Tags, FK-FO, FLAG Antibodies,
biological source   mouse
antibody form   purified immunoglobulin
clone   M1, monoclonal
form   buffered aqueous solution
concentration   2 - 5  mg/mL (Protein concentration (E280))
application(s)   western blot (chemiluminescent): 10 μg/mL
isotype   IgG2b
immunogen sequence   DYKDDDDK
conjugate   unconjugated
shipped in   dry ice
storage temp.   −20°C


Biochem/physiol Actions

Binds to the FLAG epitope when it is located at the free amino-terminus of a fusion protein. Does not bind to Met-FLAG fusion proteins, so will not recognize unprocessed, cytoplasmically expressed proteins. Binding is Ca2+-dependent; the complex dissociates in the absence of calcium ions.

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FLAG; peptide sequence DYKDDDDK

Other Notes

M1 antibody binding is calcium dependent.

Preparation Note

Dilute antibody to 10ug/mL in .05 M TBS, pH 7.4, containing 1 mM CaCl2.

Physical form

Solution in 10 mM sodium phosphate, 150 mM NaCl, pH 7.4, containing 0.02% sodium azide (w/v).


Applications in which this antibody has been used successfully, and the associated peer-reviewed papers, are given below.
Chromatin immunoprecipitation (1 paper)
Immunofluorescence (1 paper)

General description

The ANTI-FLAG M1 IgG2b mooclonal antibody binds to proteins with a FLAG marker at the free N-terminus.

Legal Information

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

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

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Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy

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Peer-Reviewed Papers


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