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  • A7732 - Anti-α-Actinin (Sarcomeric) antibody, Mouse monoclonal

A7732 Sigma-Aldrich

Anti-α-Actinin (Sarcomeric) antibody, Mouse monoclonal

clone EA-53, purified from hybridoma cell culture

Synonym: Anti-1110008F24Rik, Anti-ACTN2, Anti-Actinin α2, Anti-CMD1AA, Anti-MGC107582, Sarcomeric Alpha Actinin Antibody - Anti-α-Actinin (Sarcomeric) antibody, Mouse monoclonal, Sarcomeric Alpha Actinin Antibody



Related Categories AC-AC, Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies to Actin-associated Proteins/Myosin,
conjugate   unconjugated
clone   EA-53, monoclonal
biological source   mouse
application(s)   immunohistochemistry (formalin-fixed, paraffin-embedded sections): 10-20 μg/mL using protease-digested sections of human tongue.
  western blot: 2-4 μg/mL using rat skeletal muscle extract
species reactivity   cat, pig, sheep, snake, chicken, frog, human, goat, hamster, bovine, mouse, rabbit, rat, canine, lizard, fish
form   buffered aqueous solution
shipped in   dry ice
storage temp.   −20°C
antibody form   purified immunoglobulin
isotype   IgG1
antibody product type   primary antibodies
concentration   ~1.0 mg/mL
UniProt accession no.   Q08043
Gene Information   human ... ACTN3(88)
mouse ... Actn2(11472)
rabbit ... ACTN3(100009544)
rat ... Actn2(291245)


General description

α-Actinin is a 100kDa actin-binding protein that is found in muscle as well as non-muscle cells. In smooth muscles, α-actinin is present in dense bodies and plaques whereas in normal skeletal muscles, it is associated with z-discs that define muscle sarcomeres. The gene encoding α-actinin is mapped to the human chromosome 11q13.2. α-Actinin belongs to the spectrin protein superfamily.
α-Actinin dimerizes in an antiparallel fashion via interaction of the central rod domains. Four isoforms are found in human and mice. α-actinin-1 is ubiquitously expressed and located primarily in focal adhesions, whereas α-actinin-4 is present in certain membrane ruffles and seems to play a role in endocytosis and tumor cell motility.
ACTN1 (α-actinin-1) and ACTN4 (α-actinin-4) encodes non-muscle proteins, while ACTN2 (α-actinin-2) and ACTN3 (α-actinin-3) encodes muscle proteins.
Monoclonal Anti-α-Actinin (Sarcomeric) shows wide reactivity, as it binds to human, bovine, pig, sheep, rabbit, goat, hamster, cat, rat, mouse, dog, chicken, lizard, snake, frog and fish α-actinin.


Monoclonal Anti-α-Actinin (Sarcomeric) specifically recognizes α-skeletal muscle actinin and α-cardiac muscle actinin.


Purified rabbit skeletal α actinin.


Applications in which this antibody has been used successfully, and the associated peer-reviewed papers, are given below.
Immunocytochemistry (1 paper)
Immunofluorescence (2 papers)
Immunohistochemistry (1 paper)

Mouse Monoclonal Anti-alpha-Actinin (Sarcomeric) antibody has been used for immunocytochemical (1:800) and immunohistochemical (1:100) applications.

Western blot analysis of transfected HEK-293 cells were performed to evaluate actinin expression using monoclonal mouse anti-actinin antibody.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.

Storage and Stability

For continuous use, store at 2-8 °C for up to one month.
For extended storage, freeze at -20 °C 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. Working dilution samples should be discarded if not used within 12 hours.


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

α-Actinin maintains the structure of cytoskeletal organization and regulates muscle contraction. α-Actinin functions as an actin crosslinker and promotes cell migration. Mutations in the α-actinin gene is observed in heterogeneous hypertrophic cardiomyopathy and in juvenile onset atrial fibrillation.

Safety & Documentation

Safety Information

NONH for all modes of transport


Certificate of Analysis

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


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, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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Peer-Reviewed Papers


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A7811 Monoclonal Anti-α-Actinin (Sarcomeric) antibody produced in mouse, clone EA-53, ascites fluid

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