Date published: 2026-10-17

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alpha-Actin Antibody (SPM332): sc-56499

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Datasheets
  • α-Actin Antibody (SPM332) is a mouse monoclonal IgG2a κ, cited in 17 publications, provided at 200 µg/ml
  • raised against an N-terminal decapeptide of α-Actin of human origin
  • recommended for detection of smooth muscle α-Actin of mouse, rat, human and bovine origin by WB, IP, IF, IHC(P) and ELISA; non cross-reactive with actin from fibroblasts (β-and γ-cytoplasmic), myocardium (α-myocardial), and striated muscle (α-sarcomeric)
  • m-IgG Fc BP-HRP and m-IgG2a BP-HRP are the preferred secondary detection reagents for α-Actin Antibody (SPM332) for WB and IHC(P) applications. These reagents are now offered in bundles with α-Actin Antibody (SPM332) (see ordering information below).
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α-Actin Antibody (SPM332) is a mouse monoclonal IgG2a kappa light chain antibody that detects smooth muscle α-Actin from mouse, rat, human, and bovine sources through western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), immunohistochemistry, and enzyme-linked immunosorbent assay (ELISA). α-Actin Antibody (SPM332) comes in a non-conjugated form for flexible research applications. Actin maintains cell shape, enables motility, and facilitates intracellular transport. α-Actin exists in a dynamic balance between monomeric globular actin (G-actin) and filamentous actin (F-actin), allowing quick assembly and disassembly in response to cellular signals. This adaptability is crucial for muscle contraction and cell division, where precise actin regulation ensures proper function. α-Actin is predominantly expressed in muscle cells, unlike β-Actin and γ-Actin found in non-muscle tissues. Small GTPases and other signaling pathways regulate α-Actin organization in the cytoskeleton, highlighting α-Actin′s significance in muscle function and cellular processes.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

alpha-Actin Antibody (SPM332) References:

  1. Myocardin and Prx1 contribute to angiotensin II-induced expression of smooth muscle alpha-actin.  |  Yoshida, T., et al. 2004. Circ Res. 94: 1075-82. PMID: 15016729
  2. The vinculin/sarcomeric-alpha-actinin/alpha-actin nexus in cultured cardiac myocytes.  |  Lu, MH., et al. 1992. J Cell Biol. 117: 1007-22. PMID: 1577864
  3. Force activates smooth muscle alpha-actin promoter activity through the Rho signaling pathway.  |  Zhao, XH., et al. 2007. J Cell Sci. 120: 1801-9. PMID: 17456553
  4. Cell-specific activation of the human skeletal alpha-actin by androgens.  |  Hong, MH., et al. 2008. Endocrinology. 149: 1103-12. PMID: 18063690
  5. PIAS1 mediates TGFbeta-induced SM alpha-actin gene expression through inhibition of KLF4 function-expression by protein sumoylation.  |  Kawai-Kowase, K., et al. 2009. Arterioscler Thromb Vasc Biol. 29: 99-106. PMID: 18927467
  6. Smooth muscle α actin is specifically required for the maintenance of lactation.  |  Weymouth, N., et al. 2012. Dev Biol. 363: 1-14. PMID: 22123032
  7. The Early-Onset Myocardial Infarction Associated PHACTR1 Gene Regulates Skeletal and Cardiac Alpha-Actin Gene Expression.  |  Kelloniemi, A., et al. 2015. PLoS One. 10: e0130502. PMID: 26098115
  8. Prevalence and phenotypes of congenital myopathy due to α-actin 1 gene mutations.  |  Witting, N., et al. 2016. Muscle Nerve. 53: 388-93. PMID: 26172852
  9. Description of a Novel Cardiac Phenotype Associated With a Missense Variant in the Cardiac α-Actin (ACTC1) Gene.  |  Toledano-Delgado, FJ., et al. 2023. Circ Genom Precis Med. 16: e003963. PMID: 36960733
  10. Circulating alpha-actin in non-insulin-dependent diabetics with autonomic dysfunction.  |  Prados, J., et al. 1995. Int J Cardiol. 51: 127-30. PMID: 8522407

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

α-Actin Antibody (SPM332)

sc-56499
200 µg/ml
$322.00

α-Actin Antibody (SPM332): m-IgG Fc BP-HRP Bundle

sc-525657
200 µg Ab; 10 µg BP
$361.00

α-Actin Antibody (SPM332): m-IgG2a BP-HRP Bundle

sc-546355
200 µg Ab; 10 µg BP
$361.00

Hello, I am requesting a safety data sheet for the following product, https://www.scbt.com/p/alpha-actin-antibody-spm332, α-Actin Antibody (SPM332): sc-56499. Thank you, Melissa

Asked by: mutchmel
Thank you for your question. It would be helpful if you could call 800-457-3801, allowing for a more interactive discussion of this and other related questions.
Answered by: Technical Service
Date published: 2022-11-02

Are there any issues with using sc-56499: α-Actin (SPM332) mouse monoclonal primary antibody on mouse samples?

Asked by: Trav11
Thank you for your inquiry. The use of mouse monoclonal antibodies with mouse samples is very common and typically poses no problem. To eliminate any potential cross-reactivity of an anti-mouse secondary detection reagent,we recommend using a directly conjugated primary antibody. Please contact our special orders department for pricing and availability of sc-56499 conjugates.
Answered by: Technical Support
Date published: 2017-03-07
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Rated 4 out of 5 by SS from Good data using 1:3000 dilution with mouseGood data using 1:3000 dilution with mouse lung tissue extract. -SCBT Publication Review
Date published: 2013-02-14
Rated 5 out of 5 by HC from Used 1:4000 dilution in western with humanUsed 1:4000 dilution in western with human myocytes. -SCBT Publication Review
Date published: 2011-06-09
Rated 4 out of 5 by ET from Used in western with human BxPC3 cell lysatesUsed in western with human BxPC3 cell lysates, incubated 2 hours room temperature. -SCBT Publication Review
Date published: 2010-08-05
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α-Actin Antibody (SPM332) is rated 4.3 out of 5 by 3.
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