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A5316 Sigma

Monoclonal Anti-β-Actin antibody produced in mouse

clone AC-74, ascites fluid

Synonym: Actin Antibody Sigma, Beta Actin Antibody - Monoclonal Anti-β-Actin antibody produced in mouse - Tested Applications: immunoblotting cultured human or chicken fibroblast cell extracts 1:5,000,immunohistochemistry (formalin-fixed, paraffin-embedded sections), Beta Actin Antibody Sigma, Beta Actin Antibody, Sigma Beta Actin Antibody



Related Categories AC-AC, Actin Antibodies, Alphabetical Index, Antibodies, Antibodies for Cell Biology,
species reactivity   canine, guinea pig, rabbit, bovine, chicken, rat, sheep, carp, wide range, Drosophila, Hirudo medicinalis, pig, cat, mouse, human
application(s)   immunohistochemistry (formalin-fixed, paraffin-embedded sections): suitable
  indirect ELISA: suitable
  indirect immunofluorescence: 1:1,000 using cultured human or chicken fibroblasts
  western blot: 1:5,000 using cultured human or chicken fibroblast cell extracts
clone   AC-74, monoclonal
antibody form   ascites fluid
isotype   IgG2a
mol wt   antigen mol wt 42 kDa
contains   15 mM sodium azide
shipped in   dry ice
storage temp.   −20°C
Gene Information   human ... ACTB(60)
mouse ... Actb(11461)
rat ... Actb(81822)
biological source   mouse
conjugate   unconjugated
Featured Industry   Research Pathology



slightly modified β-cytoplasmic actin N-terminal peptide, Ac-Asp-Asp-Asp-Ile-Ala-Ala-Leu-Val-Ile-Asp-Asn-Gly-Ser-Gly-Lys, conjugated to KLH.

General description

Actin is a highly conserved protein that is a major component of both the cytoskeletal and contractile structures in all cell types. It varies in amount, being related to the type of differentiation and to the functional state of cells and tissues. Actin can be found in two different forms of aggregation, the globular or the fibrillar state, and at least six distinct isoforms occur in vertebrates. The actins exhibit over 90% sequence homology, but each isoform has a unique NH2-terminal sequence. The isoforms are comprised of three alpha actins (skeletal, cardiac, smooth), one beta actin (beta-non-muscle) and two gamma actins (gamma smooth muscle and gamma non-muscle).

Recognizes an epitope located on the N-terminal end of the β-isoform of actin. It specifically labels β-actin in a wide variety of tissues and species. In immunofluorescent staining of chicken gizzard ultrathin cryosections, the antibody labels the dense bodies, the longitudinal channels linking consecutive dense bodies that are also occupied by desmin and the membrane-associated dense plaque. The antibody does not react with adult cardiac or skeletal muscle (besides traces due to contamination of the sample with non-muscle cells) or with β-actin expressing cells in Dictyostelium discoideum amoeba. The epitope recognized by the antibody is resistant to formalin-fixation and paraffin-embedding. B5, methacarn, ethanol or Bouin′s solutions may be also used as fixatives. The antibody can be used as probes for β-actin as an internal control in immunoblotting.


Monoclonal mouse anti-actin antibody was used as a loading control for western blot analysis of immunoprecipitated proteins from rat dorsal root ganglion cocultures.

Mouse Monoclonal Anti-β-Actin antibody has been used for western blot analyses. The antibody can also be used for immunohistochemistry, indirect immunofluorescence (1:1,000) using cultured human or chicken fibroblasts, and indirect ELISA.

Western blot analysis of MDCK cell lysates were performed using monoclonal anti-actin antibody as a primary antibody.

Other Notes

To view an Actin antibody selection guide, please visit www.sigmaaldrich.com/actin.

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Safety Information

RIDADR  NONH for all modes of transport
WGK Germany  2
Protocols & Articles


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Western Blot Protocol | Immunoblotting Protocol

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Keywords: AGE, Buffers, Cell disruption, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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