Recombinant Human/Mouse/Rat Activin A Protein


BG01V human embryonic stem cells were differentiated into endoderm using media supplemented with Recombinant Human/Mouse/Rat Activin A (Catalog # 338-AC). Control cells were cultured in medium without recombinant more
1 μg/lane of Recombinant Human/Mouse/Rat Activin A was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by silver staining, showing single bands at 14 kDa and 24 kDa, more
Recombinant Human/Mouse/Rat Activin A (Catalog # 338-AC) induces hemoglobin expression in K562 human chronic myelogenous leukemia cells. The ED50 is 0.2‑1.2 ng/mL.

Product Details

Reactivity Hu, Mu, RtSpecies Glossary
Applications Bioactivity

Order Details

View Available Formulations

Recombinant Human/Mouse/Rat Activin A Protein Summary

Details of Functionality
Measured by its ability to induce hemoglobin expression in K562 human chronic myelogenous leukemia cells. Schwall, R.H. et al. (1991) Method Enzymol. 198:340. The ED50 for this effect is 0.2‑1.2 ng/mL.
The specific activity of Recombinant Human/Mouse/Rat Activin A is approximately 1 IU/μg, which is calibrated against human Activin A WHO International Standard (NIBSC code: 91/626).
Chinese Hamster Ovary cell line, CHO-derived Activin A protein
Accession #
N-terminal Sequence
Structure / Form
Disulfide-linked homodimer
Protein/Peptide Type
Recombinant Proteins
>95%, by SDS-PAGE with silver staining.
Endotoxin Note
<0.01 EU per 1 μg of the protein by the LAL method.


Theoretical MW
13 kDa (monomer).
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.
14 kDa, reducing conditions
24 kDa, non-reducing conditions
Read Publications using
338-AC in the following applications:

Packaging, Storage & Formulations

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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein.
>95%, by SDS-PAGE with silver staining.
Reconstitution Instructions
Reconstitute at 100-500 μg/mL in sterile 4 mM HCl.


This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human/Mouse/Rat Activin A Protein

  • Activin A


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 ( beta A, beta B, beta C, and beta E 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 beta A chains. The beta A subunit can also heterodimerize with a beta B or beta C subunit to form Activin AB and Activin AC, respectively (10). The 14 kDa mature human beta A chain shares 100% amino acid sequence identity with bovine, feline, mouse, porcine, and rat beta A. 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 beta A subunit into Activin AC or Inhibin A (3, 10). And the bioavailability of Activin A is restricted by its incorporation into inactive complexes with alpha 2-Macroglobulin, Follistatin, and FLRG (15, 16).
  1. Kumanov, P. et al. (2005) Reprod. Biomed. Online 10:786.
  2. Maeshima, A. et al. (2008) Endocr. J. 55:1.
  3. Rodgarkia-Dara, C. et al. (2006) Mutat. Res. 613:123.
  4. Werner, S. and C. Alzheimer (2006) Cytokine Growth Factor Rev. 17:157.
  5. Xu, P. and A.K. Hall (2006) Dev. Biol. 299:303.
  6. Shav-Tal, Y. and D. Zipori (2002) Stem Cells 20:493.
  7. Chen, Y.G. et al. (2006) Exp. Biol. Med. 231:534.
  8. Gray, A.M. and A.J. Mason (1990) Science 247:1328.
  9. Mason, A.J. et al. (1996) Mol. Endocrinol. 10:1055.
  10. Thompson, T.B. et al. (2004) Mol. Cell. Endocrinol. 225:9.
  11. Harrison, C.A. et al. (2005) Trends Endocrinol. Metab. 16:73.
  12. Onichtchouk, D. et al. (1999) Nature 401:480.
  13. Gray, P.C. et al. (2002) Mol. Cell. Endocrinol. 188:254.
  14. Kelber, J.A. et al. (2008) J. Biol. Chem. 283:4490.
  15. Phillips, D.J. et al. (1997) J. Endocrinol. 155:65.
  16. Schneyer, A. et al. (2003) Endocrinology 144:1671.

Publications for Activin A (338-AC)(270)

We have publications tested in 12 confirmed species: Human, Mouse, Rat, Bovine, Chicken, Goat, N/A, Primate - Callitrix jacchus (Common Marmoset), Primate - Macaca fascicularis (Crab-eating Monkey or Cynomolgus Macaque), Primate - Macaca mulatta (Rhesus Macaque), Sheep, Xenopus.

We have publications tested in 7 applications: Bioassay, ELISA Standard, Flow, In Vivo, Surface Plasmon Resonance, cell culture, differentiation.

Filter By Application
ELISA Standard
In Vivo
Surface Plasmon Resonance
cell culture
All Applications
Filter By Species
Primate - Callitrix jacchus (Common Marmoset)
Primate - Macaca fascicularis (Crab-eating Monkey or Cynomolgus Macaque)
Primate - Macaca mulatta (Rhesus Macaque)
All Species
Showing Publications 1 - 10 of 270. Show All 270 Publications.
Publications using 338-AC Applications Species
D Huang, L Wang, NC Talbot, C Huang, L Pu, X Zhao, X Tian, M Zhang, Y Tang Analyzing bovine OCT4 and NANOG enhancer activity in pluripotent stem cells using fluorescent protein reporters PLoS ONE, 2018;13(10):e0203923. 2018 [PMID: 30289916] (Bioassay, Mouse) Bioassay Mouse
YY Lin, Y Chien, JH Chuang, CC Chang, YP Yang, YH Lai, WL Lo, KH Chien, TI Huo, CY Wang Development of a Graphene Oxide-Incorporated Polydimethylsiloxane Membrane with Hexagonal Micropillars Int J Mol Sci, 2018;19(9):. 2018 [PMID: 30149618] (Bioassay, Human) Bioassay Human
MA Scavuzzo, MC Hill, J Chmielowie, D Yang, J Teaw, K Sheng, Y Kong, M Bettini, C Zong, JF Martin, M Borowiak Endocrine lineage biases arise in temporally distinct endocrine progenitors during pancreatic morphogenesis Nat Commun, 2018;9(1):3356. 2018 [PMID: 30135482] (Bioassay, Human) Bioassay Human
C Miyagi-Shi, Y Nakashima, N Kobayashi, I Saitoh, M Watanabe, H Noguchi Characterization of induced tissue-specific stem cells from pancreas by a synthetic self-replicative RNA Sci Rep, 2018;8(1):12341. 2018 [PMID: 30120295] (Bioassay, Mouse) Bioassay Mouse
S Yamada, Y Kubo, D Yamazaki, Y Sekino, Y Nomura, S Yoshida, Y Kanda Tributyltin Inhibits Neural Induction of Human Induced Pluripotent Stem Cells Sci Rep, 2018;8(1):12155. 2018 [PMID: 30108368] (Bioassay, Human) Bioassay Human
A Di Baldass, MA D'Amico, P Izzicupo, G Gaggi, S Guarnieri, MA Mariggiò, I Antonucci, B Corneo, D Sirabella, L Stuppia, B Ghinassi Cardiomyocytes Derived from Human CardiopoieticAmniotic Fluids Sci Rep, 2018;8(1):12028. 2018 [PMID: 30104705] (Bioassay, Human) Bioassay Human
Z Xu, X He, X Shi, Y Xia, X Liu, H Wu, P Li, H Zhang, W Yin, X Du, L Li, Y Li Analysis of differentially expressed genes among human hair follicle-derived iPSCs, induced hepatocyte-like cells, and primary hepatocytes Stem Cell Res Ther, 2018;9(1):211. 2018 [PMID: 30092828] (Bioassay, Human) Bioassay Human
P Andersen, E Tampakakis, DV Jimenez, S Kannan, M Miyamoto, HK Shin, A Saberi, S Murphy, E Sulistio, SP Chelko, C Kwon Precardiac organoids form two heart fields via Bmp/Wnt signaling Nat Commun, 2018;9(1):3140. 2018 [PMID: 30087351] (Bioassay, Mouse) Bioassay Mouse
M Shoji, H Minato, S Ogaki, M Seki, Y Suzuki, S Kume, T Kuzuhara Different murine-derived feeder cells alter the definitive endoderm differentiation of human induced pluripotent stem cells PLoS ONE, 2018;13(7):e0201239. 2018 [PMID: 30048506] (Bioassay, Human) Bioassay Human
E Magro-Lope, C Palmer, J Manso, I Liste, A Zambrano Effects of lung and airway epithelial maturation cocktail on the structure of lung bud organoids Stem Cell Res Ther, 2018;9(1):186. 2018 [PMID: 29996941] (Bioassay, Human) Bioassay Human
Show All 270 Publications.

Reviews for Activin A (338-AC) (0)

There are no reviews for Activin A (338-AC). By submitting a review you will receive an Amazon e-Gift Card or Novus Product Discount.
  • Review with no image -- $10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen
  • Review with an image -- $25/€18/£15/$25 CAD/¥150 Yuan/¥2500 Yen
  • 1st to review with an image -- $50/€35/£30/$50 CAD/¥300 Yuan/¥5000 Yen

FAQs for Activin A (338-AC) (0)

There are no specific FAQs related to this product. Read our general customer & technical service FAQs.

Additional Array Products

Bioinformatics Tool for Activin A (338-AC)

Discover related pathways, diseases and genes to Activin A (338-AC). Need help? Read the Bioinformatics Tool Guide for instructions on using this tool.
Visit Tool

Blogs on Activin A.

Transforming Growth Factor beta Signaling in Stem Cells
Transforming growth factor beta (TGF beta) signaling along with its family members have been implicated in development and maintenance of various organs. Stem cells are important contributors to this process and are characterized by their ability to s...  Read full blog post.

Contact Information

Product PDFs


Concentration Calculator

The concentration calculator allows you to quickly calculate the volume, mass or concentration of your vial. Simply enter your mass, volume, or concentration values for your reagent and the calculator will determine the rest.


Review this Product

Be the first to review our Recombinant Human/Mouse/Rat Activin A Protein and receive a gift card or discount.


Gene Symbol INHBA