Key Product Details

Species Reactivity

Validated:

Human, Mouse, Rat, Porcine, Baboon, Bovine, Canine, Chicken, Feline, Goat, Guinea Pig, Monkey, Rabbit, Sheep

Cited:

Human, Mouse, Rat, Porcine, Feline

Applications

Validated:

Flow (Intracellular), Flow Cytometry, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin, Immunoprecipitation, Multiplex Immunofluorescence, Simple Western, Western Blot

Cited:

Flow Cytometry, IF/IHC, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin, Simple Western, Western Blot

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG2a Kappa Clone # 1A4/asm-1

Format

BSA Free

Concentration

1.0 mg/ml

View all alpha-Smooth Muscle Actin Antibodies »

Product Specifications

Immunogen

Alpha-Smooth Muscle Actin Antibody (1A4/asm-1) is made to the N-Terminal decapeptide of Alpha smooth muscle isoform of actin and conjugated to KLH.

Reactivity Notes

Feline reactivity reported from a verified customer review.

Localization

Cytoplasmic

Specificity

Actin is a major component of the cytoskeleton and is present in most cell types. This MAb is highly specific to actin from smooth muscles. Its epitope lies in the first four N-terminal amino acids. This MAb does not stain cardiac or skeletal muscle; however, it does stain myofibroblasts and myoepithelial cells. This antibody could be used together with anti-muscle specific actin and myogenin in making a diagnosis of smooth muscle and skeletal muscle tumors. In most cases of rhabdomyosarcoma, this antibody yields negative results whereas anti-muscle specific actin and myogenin are positive. Leiomyosarcomas are positive only with anti-muscle specific actin and anti-smooth muscle actin and are negative with anti-myogenin.

Marker

Leiomyosarcoma Marker

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2a Kappa

Theoretical MW

42 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Scientific Data Images for alpha-Smooth Muscle Actin Antibody (1A4/asm-1) - BSA Free

alpha-Smooth Muscle Actin Antibody (1A4/asm-1) - BSA Free

Detection of alpha-Smooth Muscle Actin in Human Colon Cancer via Multiplex Immunofluorescence staining on COMET™

alpha-Smooth Muscle Actin was detected in immersion fixed paraffin-embedded sections of human colon cancer using Mouse Anti-Human/Mouse/Rat alpha-Smooth Muscle Actin Monoclonal Antibody (Novus Catalog # NBP2-33006) at 0.25ug/mL at 37 ° Celsius for 2 minutes. Before incubation with the primary antibody, tissue underwent an all-in-one dewaxing and antigen retrieval preprocessing using PreTreatment Module (PT Module) and Dewax and HIER Buffer H (pH 9). Tissue was stained using the Alexa Fluor™ 555 Goat anti-Mouse IgG Secondary Antibody at 1:100 at 37 ° Celsius for 2 minutes. (Yellow; Lunaphore Catalog # DR555MS) and counterstained with DAPI (blue; Lunaphore Catalog # DR100). Specific staining was localized to the cytoplasm and cytoskeleton. Protocol available in COMET™ Panel Builder.
alpha-Smooth Muscle Actin Antibody (1A4/asm-1) - BSA Free

Detection of alpha-Smooth Muscle Actin in Human Colon via Multiplex Immunofluorescence staining on COMET™

alpha-Smooth Muscle Actin was detected in immersion fixed paraffin-embedded sections of human colon using Mouse Anti-Human/Mouse/Rat alpha-Smooth Muscle Actin Monoclonal Antibody (Novus Catalog # NBP2-33006) at 0.25ug/mL at 37 ° Celsius for 2 minutes. Before incubation with the primary antibody, tissue underwent an all-in-one dewaxing and antigen retrieval preprocessing using PreTreatment Module (PT Module) and Dewax and HIER Buffer H (pH 9). Tissue was stained using the Alexa Fluor™ 555 Goat anti-Mouse IgG Secondary Antibody at 1:100 at 37 ° Celsius for 2 minutes. (Yellow; Lunaphore Catalog # DR555MS) and counterstained with DAPI (blue; Lunaphore Catalog # DR100). Specific staining was localized to the cytoplasm and cytoskeleton. Protocol available in COMET™ Panel Builder.
alpha-Smooth Muscle Actin Antibody (1A4/asm-1) - BSA Free

Detection of alpha-Smooth Muscle Actin in Human Breast Cancer via Multiplex Immunofluorescence staining on COMET™

alpha-Smooth Muscle Actin was detected in immersion fixed paraffin-embedded sections of human breast cancer using Mouse Anti-Human/Mouse/Rat alpha-Smooth Muscle Actin Monoclonal Antibody (Novus Catalog # NBP2-33006) at 0.25ug/mL at 37 ° Celsius for 2 minutes. Before incubation with the primary antibody, tissue underwent an all-in-one dewaxing and antigen retrieval preprocessing using PreTreatment Module (PT Module) and Dewax and HIER Buffer H (pH 9). Tissue was stained using the Alexa Fluor™ 555 Goat anti-Mouse IgG Secondary Antibody at 1:100 at 37 ° Celsius for 2 minutes. (Yellow; Lunaphore Catalog # DR555MS) and counterstained with DAPI (blue; Lunaphore Catalog # DR100). Specific staining was localized to the cytoplasm and cytoskeleton. Protocol available in COMET™ Panel Builder.
View 19 more images

Applications for alpha-Smooth Muscle Actin Antibody (1A4/asm-1) - BSA Free

Application
Recommended Usage

Flow Cytometry

0.5-1ug/million cells

Immunocytochemistry/ Immunofluorescence

0.5-1ug/ml

Immunohistochemistry

1:10-1:500

Immunohistochemistry-Frozen

1:600

Immunohistochemistry-Paraffin

0.5-1.0ug/ml

Immunoprecipitation

0.5-1ug/500ug protein lysate

Multiplex Immunofluorescence

0.25ug/mL

Simple Western

10 ug/ml

Western Blot

0.5-1ug/ml

Reviewed Applications

Read 3 reviews rated 4.7 using NBP2-33006 in the following applications:

Formulation, Preparation, and Storage

Purification

Protein A purified

Formulation

PBS

Format

BSA Free

Preservative

0.02% Sodium Azide

Concentration

1.0 mg/ml

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at -20C.

Background: alpha-Smooth Muscle Actin

Actin proteins are highly conserved in eukaryotic cells and are involved in cell motility, structure and integrity. Actin and myosin are involved in a myriad of cellular processes including locomotion, secretion, cytoplasmic streaming, phagocytosis and cytokinesis. Actin filaments, along with microtubules, comprise a major component of the cytoskeleton and play essential roles in regulating cell shape and movement. Actin has been found to be expressed in at least six isoforms, each encoded by a separate gene and expressed in a developmentally regulated and tissue-specific manner. Alpha, beta and gamma actin isoforms have been identified. Alpha actins are a major constituent of the contractile apparatus, whereas beta and gamma actins are involved in the regulation of cell motility.

ACTA2 encodes alpha Smooth Muscle Actin and is also known as alpha-actin, alpha-actin-2, aortic smooth muscle or alpha smooth muscle actin (alpha-SMA, SMactin, alpha-SM-actin, ASMA). Alpha Smooth Muscle Actin is frequently used as a marker of smooth muscle differentiation and has a theoretical molecular weight of 42 kDa. Smooth muscle alpha actin is one of a few genes whose expression is predominantly expressed in vascular smooth muscle cells that is used to study myofibroblasts and fibrosis (1). Excessive accumulation of alpha smooth muscle actin-positive (ACTA2+) activated myofibroblasts is observed in Idiopathic pulmonary fibrosis (2). Expression of smooth muscle alpha actin is regulated by cell proliferation and is altered in pathological conditions including atherosclerosis and is common in metastatic cancers (1,3).

References

1. Chakraborty, R., Saddouk, F. Z., Carrao, A. C., Krause, D. S., Greif, D. M., & Martin, K. A. (2019). Promoters to Study Vascular Smooth Muscle. Arterioscler Thromb Vasc Biol, 39(4), 603-612. doi:10.1161/atvbaha.119.312449

2 .El Agha, E., Moiseenko, A., Kheirollahi, V., De Langhe, S., Crnkovic, S., Kwapiszewska, G., . . . Bellusci, S. (2017). Two-Way Conversion between Lipogenic and Myogenic Fibroblastic Phenotypes Marks the Progression and Resolution of Lung Fibrosis. Cell Stem Cell, 20(2), 261-273.e263. doi:10.1016/j.stem.2016.10.004

3. Chen, Y. C., Gonzalez, M. E., Burman, B., Zhao, X., Anwar, T., Tran, M., . . . Kleer, C. G. (2019). Mesenchymal Stem/Stromal Cell Engulfment Reveals Metastatic Advantage in Breast Cancer. Cell Rep, 27(13), 3916-3926.e3915. doi:10.1016/j.celrep.2019.05.084

Long Name

Actin, Alpha 2, Smooth Muscle, Aorta

Alternate Names

AAT6, ACTA2, Actin alpha 2, ACTSA, ACTVS, alphaSmooth Muscle Actin, MYMY5, SMA, 1a4 sma, 1a4 smooth muscle actin, alpha sma 1a4, sma 1a4

Gene Symbol

ACTA2

UniProt

P62736 (Human)

Additional alpha-Smooth Muscle Actin Products

Product Documents for alpha-Smooth Muscle Actin Antibody (1A4/asm-1) - BSA Free

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Download SDS

Product Specific Notices for alpha-Smooth Muscle Actin Antibody (1A4/asm-1) - BSA Free

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Privacy and Cookie Policy
Site Map
© Copyright 2024 Bio-Techne. All Rights Reserved.