Skip to Content
Merck
All Photos(2)

Key Documents

MAB3242

Sigma-Aldrich

Anti-Smoothelin Antibody, clone R4A

clone R4A, Chemicon®, from mouse

Sign Into View Organizational & Contract Pricing


About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

mouse

Quality Level

antibody form

purified antibody

clone

R4A, monoclonal

species reactivity

pig, chicken, monkey, canine, feline, human, hamster

manufacturer/tradename

Chemicon®

technique(s)

immunocytochemistry: suitable
immunohistochemistry: suitable (paraffin)
western blot: suitable

isotype

IgG1

UniProt accession no.

shipped in

dry ice

target post-translational modification

unmodified

Gene Information

human ... SMTN(6525)

General description

Smoothelin is a constituent of the smooth muscle cell (SMC) cytoskeleton. Antibodies directed to smoothelin are useful tools to monitor SMC differentiation. Smoothelin is exclusively expressed in fully differentiated (contractile) SMCs. RNA and protein analyses revealed a broad species distribution of this protein. Cell with SMC-like characteristics, such as myofibroblasts and myoepithelial cells, as well as skeletal and cardiac muscle do not contain smoothelin. Confocal scanning laser microscopy of tissue sections, as well as transfection studies, show a filamentous organization of smoothelin that is different from that of desmin or vimentin. Smoothelin colocalizes with actin stress fibers. In immunoblots two molecular weight isoforms are detected i.e. a 50 kDa isoform specific for visceral SMC, and an isoform with a molecular weight of approximately 100 kDa in vascular SMC. Human smoothelin is encoded by a single copy gene which is located on chromosome 22.MAB3242 is useful to discriminate fully differentiated, contractile SMCs from proliferative SMCs. The distribution of smoothelin-positive cells indicates a correlation between smoothelin expression and smooth muscle tissue contractility. Smoothelin is a useful tool in the evaluation of atherosclerotic lesions.

Specificity

MAB3242 reacts with smoothelin, a cytoskeletal protein exclusively found in smooth muscle cells. Reacts with the 59 kDa and 100 kDa protein corresponding to smoothelin by Western blot.

Immunogen

Cytoskeletal extract of chicken gizzard.

Application

Detect Smoothelin using this Anti-Smoothelin Antibody, clone R4A validated for use in WB, IC, IH(P).
Western blot

Immunocytochemistry

Immunohistochemistry on both frozen and paraffin embedded tissue sections. For paraffin sections, high temperature antigen retrieval in 10 mM citrate buffer (pH 6.0) is highly recommended (van der Loop, 1997).

Optimal working dilutions must be determined by the end user.

Physical form

Format: Purified
Liquid in buffer (PBS) with 0.1% sodium azide.

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Legal Information

CHEMICON is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Yan Zhang et al.
Cardiovascular pathology : the official journal of the Society for Cardiovascular Pathology, 19(6), e233-e240 (2010-01-23)
We have recently shown that native murine ventricular fibroblasts express both connexin43 (Cx43) and Cx45, and that the level of Cx43 expression influences intercellular coupling and cell proliferation. Relatively little is known, however, about how myocardial infarction (MI) influences expression
Survivin expression is up-regulated in vascular injury and identifies a distinct cellular phenotype.
Hector F Simosa, Grace Wang, XinXin Sui, Timothy Peterson, Vinod Narra, Dario C Altieri et al.
Journal of Vascular Surgery null
Eric van der Veer et al.
Circulation research, 97(1), 25-34 (2005-06-11)
Conversion of vascular smooth muscle cells (SMCs) from a proliferative state to a nonproliferative, contractile state confers vasomotor function to developing and remodeling blood vessels. Using a maturation-competent human SMC line, we determined that this shift in phenotype was accompanied
Sachiko Matsuzaki et al.
Human reproduction (Oxford, England), 31(3), 541-553 (2016-01-15)
Can deep infiltrating endometriotic stromal cells (DES) sense changes in extracellular matrix (ECM) stiffness and respond to them? Soft matrices inhibit cell proliferation and inactivate the fibrotic phenotype of DES in vitro. Deep infiltrating endometriosis (DIE) is characterized histologically by
Philippe Gomis et al.
Journal of neurosurgery, 102(4), 715-720 (2005-05-06)
The aim of this project was to study the perturbations of four smooth-muscle proteins and an extracellular protein, type I collagen, after subarachnoid hemorrhage (SAH) and to examine the possible preventive effects of dexamethasone. Using a one-hemorrhage rabbit model, the

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

Contact Technical Service