Human Activin RIB/ALK-4 Antibody

  
  • Species Reactivity
    Human
  • Specificity
    Detects human Activin RIB/ALK‑4 in direct ELISAs. In direct ELISAs, no cross-reactivity with recombinant human Activin RIA, RIIA, or RIIB is observed.
  • Source
    Monoclonal Mouse IgG2B Clone # 544310
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    Mouse myeloma cell line NS0-derived recombinant human Activin RIB/ALK‑4
    Ser24-Glu126
    Accession # P36896
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Flow Cytometry
    2.5 µg/106 cells
    See below
  • CyTOF-ready
    Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
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.
Data Examples
Detection of Activin RIB/ALK‑4 in PC‑3 Human Cell Line by Flow Cytometry. PC‑3 human prostate cancer cell line was stained with Mouse Anti-Human Activin RIB/ALK‑4 Monoclonal Antibody (Catalog # MAB2221, filled histogram) or isotype control antibody (Catalog # MAB0041, open histogram), followed by Phycoerythrin-conjugated Anti-Mouse IgG F(ab')2 Secondary Antibody (Catalog # F0102B).
Preparation and Storage
  • Reconstitution
    Reconstitute at 0.5 mg/mL in sterile PBS.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • 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
Related Research Areas
Isotype Controls
Description Application Cat# Citations Images  

Mouse IgG2B Isotype Control

Ctrl MAB004 32  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG2B Isotype Control

Ctrl MAB0041 7  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG2B Isotype Control

Ctrl MAB0042 6
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....
Secondary Antibodies
Description Application Cat# Citations Images  

Mouse IgG HRP-conjugated Antibody

WB HAF007 26  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) PE-conjugated Antibody

Flow F0102B 10  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG NorthernLights™ NL557-conjugate Antibody

Flow, IHC, ICC NL007 9
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG Biotinylated Antibody

WB BAF018 1
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG HRP-conjugated Antibody

WB HAF018 9  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG NorthernLights™ NL637-conjugated Antibody

Flow, IHC, ICC NL008 8
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) APC-conjugated Antibody

Flow F0101B 2  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG NorthernLights™ NL493-conjugated Antibody

Flow, IHC, ICC NL009 5
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) Fluorescein-conjugated Antibody

Flow F0103B 5  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Goat Anti-Mouse IgG Biotinylated Antibody

WB BAF007 4
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG Antibody

WB AF007 4
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse/Rabbit IgG VisUCyte HRP Polymer Antibody

IHC VC002  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Rat Anti-Mouse IgG2B APC-conjugated Antibody

Flow F0133 1  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG VisUCyte HRP Polymer Antibody

IHC VC001  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) PerCP-conjugated Antibody

Flow F0114  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Goat Anti-Mouse IgG Fc Affinity Purified Polyclonal Ab

G-202-C 2
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Rat Anti-Mouse IgG2B PE-conjugated Antibody

Flow F0132  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG2B Antibody

Flow MAB0043  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Rat Anti-Mouse IgG2B Fluorescein-conjugated Antibody

Flow F0134 1
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Have you used Human Activin RIB/ALK-4 Antibody?

Submit a review and receive a $25US/€18/£15/$25CAN amazon gift card if you include an image - $10US/€7/£6/$10CAN Amazon card for reviews without an image. Limited to verified customers in USA, Canada and Europe.

Order Details

Contact Information

Calculators

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

=
÷
R&D Systems Guarantee

Monoclonal
Antibody
Panels For
Screening

Learn More
Monoclonal Antibodies

Feedback

Customer Information