Human Activin B beta B subunit Antibody

(2 citations)   
  • Species Reactivity
    Human
  • Specificity
    Detects human Activin B beta B subunit in direct ELISAs and Western blots. In direct ELISAs, no cross-reactivity with recombinant human (rh) Inhibin B or rhActivin A is observed. In Western blots, approximately 20% cross-reactivity with rhInhibin B is observed and no cross‑reactivity with rhActivin A or recombinant mouse Activin A is observed.
  • Source
    Monoclonal Mouse IgG1 Clone # 146807
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    Chinese hamster ovary cell line CHO-derived recombinant human Activin B
    Gly293-Ala407
    Accession # Q53T31
  • 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.
  • Endotoxin Level
    <0.10 EU per 1 μg of the antibody by the LAL method.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    1 µg/mL
    Recombinant Human Activin B beta B subunit (Catalog # 659-AB)
  • Neutralization
    Measured by its ability to neutralize Activin B-induced hemoglobin expression in the K562 human chronic myelogenous leukemia cell line. Schwall, R. H. et al. (1991) Method Enzymol. 198:340. The Neutralization Dose (ND50) is typically 0.6-3.0 µg/mL in the presence of 7.5 ng/mL Recombinant Human Activin B beta B subunit.
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
Hemoglobin Expression Induced by Activin B and Neutralization by Human Activin B Antibody. Recombinant Human Activin B beta B subunit (Catalog # 659-AB) increases hemoglobin expression in the K562 human chronic myelogenous leukemia cell line in a dose-dependent manner (orange line), as measured by the psuedoperoxidase assay. Hemoglobin expression elicited by Recombinant Human Activin B beta B subunit (7.5 ng/mL) is neutralized (green line) by increasing concentrations of Mouse Anti-Human Activin B beta B subunit Monoclonal Antibody (Catalog # MAB659). The ND50 is typically 0.6-3.0 µg/mL.
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 B

Activins and inhibins, members of the TGF-beta superfamily, are disulfide-linked dimeric proteins that were originally purified from gonadal fluids as proteins that stimulated or inhibited, respectively, pituitary follicle stimulating hormone (FSH) release. These proteins have since been shown to have a wide range of biological activities including: mesoderm induction, neural cell differentiation, bone remodeling, hematopoiesis and reproductive physiology. Activins/inhibins are produced as precursor proteins with an amino-terminal propeptide that is cleaved to release the carboxy-terminal bioactive ligands. Activins are homodimers or heterodimers of the various beta subunit isoforms, while inhibins are heterodimers of a unique alpha  subunit and one of the various beta  subunits. Five beta subunits (mammalian beta A, beta B, beta C, beta E and  Xenopus beta D) have been cloned. The activin/inhibin nomenclature reflects the subunit composition of the proteins: activin A ( beta A­‑ beta A), activin B ( beta B­‑ beta B), activin AB ( beta A‑ beta B), inhibin A ( alpha ­‑ beta A) and inhibin B ( alpha ­‑ beta B). At present, little is known about the contribution of the other beta  subunits to activin or inhibin formation and biology. At the amino acid sequence level, the mature human beta B subunit is greater than 98% identical to mouse beta B, while the human and mouse alpha  subunits share approximately 80% identity. Similarly to other TGF-beta  family members, activins exert their biological activities through binding to the heterodimeric complex composed of two membrane spanning serine-threonine kinases designated as type I and type II. Two forms of activin receptor type I (Act RI-A and Act RI-B) and two forms of activin receptor type II (Act RII-A and Act RII-B) have been identified. Activin binds directly to Act RII, the complex then associates with Act RI and initiates signaling. Besides activins, Act RII has been shown to bind certain other TGF-beta superfamily members. Inhibin A has been shown to bind with low-affinity to Act RII. The existence of a distinct inhibin-specific receptor and/or signal transduction pathway has been hypothesized.

  • References:
    1. Woodruff, T.K. (1998) Biochemical Pharmacology 55:953.
    2. Ying, S.Y. et al. (1997) Proc. Soc. Exp. Biol. Med. 214:114.
  • Entrez Gene IDs:
    3625 (Human); 16324 (Mouse)
  • Alternate Names:
    Activin B; INHBB; Inhibin, Beta B; Inhibin, Beta-2
Related Research Areas
Citations:

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.

2 Citations: Showing 1 - 2
Filter your results:

Species
Applications
Sample Type
  1. An activin receptor IIA ligand trap corrects ineffective erythropoiesis in beta-thalassemia.
    Authors: Dussiot M, Maciel T, Fricot A, Chartier C, Negre O, Veiga J, Grapton D, Paubelle E, Payen E, Beuzard Y, Leboulch P, Ribeil J, Arlet J, Cote F, Courtois G, Ginzburg Y, Daniel T, Chopra R, Sung V, Hermine O, Moura I
    Nat Med, 2014;20(4):398-407.
    Species: Mouse
    Sample Type: Whole Cells
    Application: Flow
  2. The neuroprotective effect of Activin A and B: implication for neurodegenerative diseases.
    Authors: Kupershmidt L, Amit T, Bar-Am O, Youdim MB, Blumenfeld Z
    J. Neurochem., 2007;103(3):962-71.
    Species: Human
    Sample Type: Cell Lysates
    Application: WB
Isotype Controls
Description Application Cat# Citations Images  

Mouse IgG1 Isotype Control

Ctrl MAB002 138  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG1 Isotype Control

Ctrl MAB002R 1
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....

Goat Anti-Mouse IgG Biotinylated Antibody

WB BAF007 4
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....

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....

Mouse IgG VisUCyte HRP Polymer Antibody

IHC VC001  
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....

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

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

Have you used Human Activin B beta B subunit 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