Detects human Activin A in direct ELISAs. Recognizes proteins containing the precursor or mature betaA subunits. The amino acid sequences of mature betaA subunits from human, mouse, and rat are identical. Therefore, this antibody will also detect the mature betaA subunits from mouse and rat.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG₁

Scientific Data Images for Human/Mouse/Rat Activin A betaA subunit Biotinylated Antibody

Human Activin A ELISA Standard Curve

Human Total Legumain/Asparaginyl Endopeptidase was serially diluted and captured by Mouse Anti-Human/Mouse/Rat Activin A betaA subunit Monoclonal Antibody (Catalog # MAB3381) coated on a Clear Polystyrene Microplate (Catalog # DY990). Mouse Anti-Human/Mouse/Rat Activin A betaA subunit Monoclonal Antibody (Catalog # MAB3381) was biotinylated and incubated with the protein captured on the plate. Detection of the standard curve was achieved by incubating Streptavidin-HRP (Catalog # DY998)

Applications for Human/Mouse/Rat Activin A betaA subunit Biotinylated Antibody

Human/Mouse/Rat Activin A Sandwich Immunoassay

ELISA Detection (Matched Antibody Pair)

Recommended Concentration: 0.5-2.0 µg/mL
Use in combination with these reagents:

Capture Reagent: Human/Mouse/Rat Activin A betaA subunit Antibody (Catalog # MAB3381)
Standard: Recombinant Human/Mouse/Rat Activin A Protein (Catalog # 338-AC)

Please Note: Optimal dilutions of this antibody should be experimentally determined.

Reviewed Applications

Read 1 review rated 5 using BAM3381 in the following applications:

ELISA (1 Review)

Formulation, Preparation, and Storage

Purification

Protein A or G purified from ascites

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS.

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.

Shipping

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

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Activin A betaA subunit

Activin and Inhibin are members of the TGF-beta superfamily of cytokines and are involved in a wide range of biological processes including tissue morphogenesis and repair, fibrosis, inflammation, neural development, hematopoiesis, reproductive system function, and carcinogenesis (1-7). Activin and Inhibin are produced as precursor proteins. Their amino terminal propeptides are proteolytically cleaved and facilitate formation of disulfide-linked dimers of the bioactive proteins (8, 9). Activins are nonglycosylated homodimers or heterodimers of various beta subunits ( betaA, betaB, betaC, and betaE in mammals), while Inhibins are heterodimers of a unique alpha subunit and one of the beta subunits. Activin A is a widely expressed homodimer of two betaA chains. The betaA subunit can also heterodimerize with a betaB or betaC subunit to form Activin AB and Activin AC, respectively (10). The 14 kDa mature human betaA chain shares 100% amino acid sequence identity with bovine, feline, mouse, porcine, and rat betaA. Activin A exerts its biological activities by binding to the type 2 serine/threonine kinase Activin RIIA which then noncovalently associates with the type 1 serine/threonine kinase Activin RIB/ALK-4 (7, 11). Signaling through this receptor complex leads to Smad activation and regulation of activin-responsive gene transcription (7, 11). The bioactivity of Activin A is regulated by a variety of mechanisms (11). BAMBI, Betaglycan, and Cripto are cell-associated molecules that function as decoy receptors or limit the ability of Activin A to induce receptor complex assembly (12-14). The intracellular formation of Activin A can be prevented by the incorporation of the betaA subunit into Activin AC or Inhibin A (3, 10). And the bioavailability of Activin A is restricted by its incorporation into inactive complexes with alpha2-Macroglobulin, Follistatin, and FLRG (15, 16).

References

Kumanov, P. et al. (2005) Reprod. Biomed. Online 10:786.
Maeshima, A. et al. (2008) Endocr. J. 55:1.
Rodgarkia-Dara, C. et al. (2006) Mutat. Res. 613:123.
Werner, S. and C. Alzheimer (2006) Cytokine Growth Factor Rev. 17:157.
Xu, P. and A.K. Hall (2006) Dev. Biol. 299:303.
Shav-Tal, Y. and D. Zipori (2002) Stem Cells 20:493.
Chen, Y.G. et al. (2006) Exp. Biol. Med. 231:534.
Gray, A.M. and A.J. Mason (1990) Science 247:1328.
Mason, A.J. et al. (1996) Mol. Endocrinol. 10:1055.
Thompson, T.B. et al. (2004) Mol. Cell. Endocrinol. 225:9.
Harrison, C.A. et al. (2005) Trends Endocrinol. Metab. 16:73.
Onichtchouk, D. et al. (1999) Nature 401:480.
Gray, P.C. et al. (2002) Mol. Cell. Endocrinol. 188:254.
Kelber, J.A. et al. (2008) J. Biol. Chem. 283:4490.
Phillips, D.J. et al. (1997) J. Endocrinol. 155:65.
Schneyer, A. et al. (2003) Endocrinology 144:1671.

Entrez Gene IDs

3624 (Human); 16323 (Mouse); 29200 (Rat)

Gene Symbol

INHBA

Additional Activin A betaA subunit Products

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Product Specific Notices for Human/Mouse/Rat Activin A betaA subunit Biotinylated Antibody

For research use only

Citations
Reviews

Human/Mouse/Rat Activin A betaA subunit Biotinylated Antibody

R&D Systems, part of Bio-Techne | Catalog # BAM3381

Key Product Details

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Applications