Human Activin RIB/ALK-4 Biotinylated Antibody

Catalog # Availability Size / Price Qty
BAF222
Product Details
Citations (1)
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Human Activin RIB/ALK-4 Biotinylated Antibody Summary

Species Reactivity
Human
Specificity
Detects human Activin RIB/ALK‑4 in Western blots.
Source
Polyclonal Goat IgG
Purification
Antigen Affinity-purified
Immunogen
Mouse myeloma cell line NS0-derived recombinant human Activin RIB/ALK‑4
Leu32-Glu126
Accession # AAA60556
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Label
Biotin

Applications

Recommended Concentration
Sample
Western Blot
0.1 µg/mL
Recombinant Human Activin RIB/ALK‑4 Fc Chimera (Catalog # 808-AR)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Availability
Size / Price
Qty
RB01
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 RIB/ALK-4

Activin RIB, also known as ALK4, is a glycosylated 58 kDa type I receptor in the superfamily of TGF-beta serine/threonine kinase receptors. Activin RIB associates with Activin RIIB to form a receptor complex for activin and inhibin molecules (1). These ligands bind to Activin RIIB which then associates with and phosphorylates the cytoplasmic domain of Activin RIB to initiate signal transduction (2, 3). Mature human Activin RIB consists of a 103 amino acid (aa) extracellular domain (ECD), a 23 aa transmembrane segment, and a 356 aa cytoplasmic region that includes the kinase domain (4). Within the ECD, human Activin RIB shares 93% and 95% aa sequence identity with mouse and rat Activin RIB, respectively. It shares 25% - 35% aa sequence identity with other human type I receptors Activin RIA, Activin RIC, BMPR-IA, BMPR-IB, and TGF-beta R1. Alternately spliced isoforms of Activin RIB have deletions in the cytoplasmic domain and function as dominant negative inhibitors of activin signaling (5, 6). Activin receptor signaling is modulated by the direct interaction of Activin RIB with cripto or inhibin binding protein (7-9). Activin RIB is excluded from the signaling complex if Activin RIIB first binds inhibin and betaglycan (10). Activin RIB functions in a wide variety of growth and differentiation processes, including embryonic cell fate and axis determination, cell proliferation and apoptosis, and tumorigenesis (1, 11, 12).

References
  1. Chen, Y- G. et al. (2006) Exp. Biol. Med. 231:534. 
  2. Attisano, L. et al. (1996) Mol. Cell. Biol. 16:1066. 
  3. Tsuchida, K. et al. (1995) Endocrinology 136:5493. 
  4. ten Dijke, P. et al. (1993) Oncogene 8:2879. 
  5. Xu, J. et al. (1994) Proc. Natl. Acad. Sci. USA 91:7957. 
  6. Zhou, Y. et al. (2000) Mol. Endocrinol. 14:2066. 
  7. Chapman, S.C. and T.K. Woodruff (2001) Mol. Endocrinol. 15:668.
  8. Bianco, C. et al. (2002) Mol. Cell. Biol. 22:2586.
  9. Gray, P.C. et al. (2003) Proc. Natl. Acad. Sci. USA 100:5193.
  10. Lewis, K.A. et al. (2000) Nature 404:411.
  11. Gu, Z. et al. (1998) Genes Dev. 12:844.
  12. Chen, Y. et al. (2004) Dev. Biol. 268:280.
Long Name
Activin Receptor IB
Entrez Gene IDs
91 (Human); 11479 (Mouse)
Alternate Names
activin A receptor, type IB; Activin receptor type IB; Activin receptor-like kinase 4; Activin RIB; ActivinRIB; ACTRIB; ACVR1B; ACVRLK4ACTR-IB; ALK4; ALK-4; ALK4activin A receptor, type II-like kinase 4; EC 2.7.11; EC 2.7.11.30; Serine/threonine-protein kinase receptor R2; SKR2activin receptor type-1B

Product Datasheets

Citation for Human Activin RIB/ALK-4 Biotinylated Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citation: Showing 1 - 1

  1. BMP-7 induces apoptosis in human germinal center B cells and is influenced by TGF-? receptor type I ALK5
    Authors: LK Bollum, K Huse, MP Oksvold, B Bai, VI Hilden, L Forfang, SO Yoon, S Wälchli, EB Smeland, JH Myklebust
    PLoS ONE, 2017;12(5):e0177188.
    Species: Human
    Sample Types: Whole Cells
    Applications: Flow Cytometry

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