• USA Home
  • A2066 - Anti-Actin antibody produced in rabbit

A2066 Sigma-Aldrich

Anti-Actin antibody produced in rabbit

affinity isolated antibody, buffered aqueous solution

Synonym: Actin Antibody Sigma, Anti Actin Antibody Western Blot, Anti Actin Antibody for western blot - Anti-Actin antibody produced in rabbit, Anti Actin Sigma, Anti Actin, Sigma Actin Antibody



Related Categories AC-AC, Actin Antibodies, Alphabetical Index, Antibodies, Antibodies for Cell Biology,
conjugate   unconjugated
clone   polyclonal
biological source   rabbit
application(s)   immunohistochemistry (formalin-fixed, paraffin-embedded sections): 1:25 using human or animal tissue sections
  indirect immunofluorescence: 1:40 using chicken fibroblasts
  western blot: 1:100 using chicken gizzard extract
species reactivity   wide range, human, chicken, amoeba, slime mold, vertebrates
mol wt   antigen 42 kDa
form   buffered aqueous solution
shipped in   dry ice
storage temp.   −20°C
antibody form   affinity isolated antibody
Quality Level   200
antibody product type   primary antibodies
Featured Industry   Research Pathology
UniProt accession no.   P68133
Gene Information   human ... ACTA1(58)
mouse ... Acta1(11459)
rat ... Acta1(29437)


General description

Actin, a highly conserved protein, 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 ACTA1 (actin, α 1) gene is mapped to human chromosome 1q42.13. The gene codes for actin 1, a thin filament component of skeletal muscle.

In immunoblotting, the product localizes actin in many species ranging from human skeletal muscle to amoeba. The product recognizes the 42 kDa actin band using immunoblotting techniques in human or animal tissue extracts.


Anti-Actin specifically stains typical stress fibers in cultured chicken fibroblasts.


The C-terminal actin fragment attached to Multiple Antigen Peptide (MAP) backbone.


May be used to study actin structure and function and to probe binding sites of actin-binding proteins.

Rabbit anti-actin antibody can be used for western blot assays. The antibody can also be used for immunohistochemistry (1:25, using human or animal tissue sections) and indirect immunofluorescence (1:40, using chicken fibroblasts) applications.
Used to study actin structure and function and to probe binding sites of actin-binding proteins. Protein lysates generated from embryonic mouse limb tissue was analyzed by western blot using actin as the loading control. Actin was detected using rabbit anti-actin at 1:8000. Actin detected by a rabbit anti-actin antibody was used as a loading control for MCF7 cell lysates. Actin was detected at 42 kDa.

Used to study actin structure and function and to probe binding sites of actin-binding proteins. Protein lysates generated from embryonic mouse limb tissue was analyzed by western blot using actin as the loading control. Actin was detected using rabbit anti-actin at 1:8000. Actin detected by a rabbit anti-actin antibody was used as a loading control for MCF7 cell lysates . Actin was detected at 42 kDa.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 1% bovine serum albumin and 15 mM sodium azide as preservative.

Storage and Stability

For continuous use, store at 2-8 °C for up to one month.
For extended storage, the solution may be frozen in working aliquots. Repeated freezing and thawing, or storage in "frost-free" freezers, is not recommended. If slight turbidity occurs upon prolonged storage, clarify the solution by centrifugation before use.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Biochem/physiol Actions

Actin is a cytoskeletal protein that regulates cell motility, secretion, phagocytosis and cytokinesis. The NH2-terminal of actin may function as an antigen. This terminal may also modulate actin interactions and may associate with proteins such as myosin. Actin protein is essential for the formation of mature platelets.
Mutations in ACTA1 (actin, α 1) is known to cause thin filament myopathy such as nemaline myopathy, congenital myopathy, actin myopathy, intranuclear rod myopathy, cap myopathy and core myopathy. Upregulation of the gene is observed in orthotopic liver transplantation without any earlier evidence of autoimmune liver disease. The encoded protein actin forms a network of filaments and is responsible for the shape of the cell. It provides cellular strength and promotes active movement of the cell.

Other Notes

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

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

Please Enter a Lot Number

Certificate of Origin (COO)

Please Enter a Lot Number

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.
What is the molecular weight of actin, ProductsA2066 and A2547?
Actin has a molecular weight of 42 kDa.
Which type of actin does Product A2066, Anti-Actin antibody produced in rabbit, recognize?
This antibody is a polyclonal antibody.The immunogen was a C-terminal actin fragment (C11 peptide, Ser-Gly-Pro-Ser-Ile-Val-His-Arg-Lys-Cys-Phe) that is found in all actin sequences.
Does Product A2066, Anti-Actin antibody produced in rabbit, react with my species?
The sequence use to develop this antibody is conserved across many species from amoeba to vertebrates. It should react with most samples.
Are there any special considerations for immunohistochemistry of formalin-fixed, paraffin-embedded tissue sections?
For FFPE sections, we recommend using enzymatic unmasking.
Why do I have 3 bands on my western blot when using Product A2066, Anti-Actin antibody produced in rabbit?
While actin should run as a 42 kDa band when detected by Western blotting, there are recent observations that cleavage products can be seen in cells undergoing apoptosis. Initial cleavage gives a band at 41 kDa, which may appear as a doublet on the blot. In addition, further cleavage results in a major band at 30 kDa and a small band at 14 kDa which have been shown to be cleavage products due to the action of interleukin 1 -converting enzyme. This may explain the detection of smaller bands when blotting with this antibody. This banding pattern may be detected with other actin antibodies as well.Kayalar, C., et al., Proc. Natl. Acad. Sci., USA, 93, 2234-2238 (1996).
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 or view 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.
My question is not addressed here, how can I contact Technical Service for assistance?
Ask a Scientist here.
My question is not addressed here, how can I contact Technical Service for assistance?
Ask a Scientist here.
Show more questions
Protocols & Articles


Antibodies to Actin Gene Family Isoforms

The Actin Gene Family Actin and myosin are the two major cytoskeletal proteins implicated in cell motility. As constituents of many cell types, actin and myosin are involved in a myriad of cellular p...
Keywords: Western blot

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


Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

Related Content

Antibody Explorer | Buy Primary Antibodies & Secondary Antibodies

Primary, Secondary and Recombinant Monoclonal Antibodies Providing highly cited primary and secondary antibodies, we have you covered for your ELISA, western blot, immunohistochemistry or other assay...
Keywords: Alzheimer Disease, Cancer, Chromatin immunoprecipitation, Diagnostic, Enzyme-linked immunosorbent assay, Flow cytometry, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Neuroscience, Western blot

Peer-Reviewed Papers


Related Products

related product

Product #


Add to Cart

A9044 Anti-Mouse IgG (whole molecule)–Peroxidase antibody produced in rabbit, IgG fraction of antiserum, buffered aqueous solution

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?