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Your Position: Home > All Other Proteins > BAFF > Biotinylated Human BAFF / TNFSF13B / CD257 / TALL1 Protein, His Tag, Avi Tag

Biotinylated Human BAFF / TNFSF13B / CD257 Protein, Avi Tag (Avitag™)

  • Synonym
    TNFSF13B,BAFF,BLYS,CD257,DTL,TALL-1,TALL1,THANK,TNFSF20,ZTNF4
  • Source
    Biotinylated Human BAFF, His Tag (BAF-H82Q2) is expressed from human 293 cells (HEK293). It contains AA Ala 134 - Leu 285 (Accession # AAH20674.1).
    Predicted N-terminus: His
  • Molecular Characterization
    BAFF(Ala 134 - Leu 285) AAH20674.1

    This protein carries a polyhistidine tag at the N-terminus, followed by an Avi tag (Avitag™).

    The protein has a calculated MW of 29.2 kDa. As a result of glycosylation, the protein migrates as 29 kDa under reducing (R) condition, and 58 kDa under non-reducing (NR) condition (SDS-PAGE).

  • Biotinylation
    Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
  • Biotin:Protein Ratio
    The biotin to protein ratio is 0.5-1 as determined by the HABA assay.
  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >95% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.

    Contact us for customized product form or formulation.

  • Reconstitution

    Please see Certificate of Analysis for specific instructions.

    For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please protect from light and avoid repeated freeze-thaw cycles.

    No activity loss is observed after storage at:

    1. 4-8°C for 12 months in lyophilized state;
    2. -70°C for 3 months under sterile conditions after reconstitution.
SDS-PAGE
Biotinylated Human BAFF, His Tag (Cat. No. BAF-H82Q2) SDS-PAGE gel

Biotinylated Human BAFF, His Tag on SDS-PAGE under reducing (R) and no-reducing (NR) conditions. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.

Bioactivity
Biotinylated Human BAFF, His TagBiotinylated Human BAFF, His Tag (Cat. No. BAF-H82Q2) ELISA bioactivity

Immobilized Human BCMA, Fc Tag (Cat. No. BC7-H5254) at 2 μg/mL (100 μL/well) can bind Biotinylated Human BAFF (Cat. No. BAF-H82Q2) with a linear range of 0.24-3.9 ng/mL (QC tested).

Biotinylated Human BAFF, His TagBiotinylated Human BAFF, His Tag (Cat. No. BAF-H82Q2) ELISA bioactivity

Immobilized Human BCMA, His Tag (Cat. No. BCA-H522y) at 5 μg/mL (100 μL/well) can bind Biotinylated Human BAFF (Cat. No. BAF-H82Q2) with a linear range of 0.24-3.9 ng/mL (Routinely tested).

  • Background
    B-cell activating factor (BAFF) is also known as tumor necrosis factor ligand superfamily member 13B , TNFSF13B, BAFF, B Lymphocyte Stimulator (BLyS) , cluster of differentiation 257 (CD257), DTL, TNF- and APOL-related leukocyte expressed ligand (TALL-1), THANK, TNFSF20, ZTNF4, and is a cytokine that belongs to the tumor necrosis factor (TNF) ligand family. This cytokine is a ligand for receptors TNFRSF13B/TACI, TNFRSF17/BCMA, and TNFRSF13C/BAFFR. This cytokine is expressed in B cell lineage cells, and acts as a potent B cell activator. It has been also shown to play an important role in the proliferation and differentiation of B cells. It is expressed as transmembrane protein on various cell types including monocytes, dendritic cells and bone marrow stromal cells. BAFF is the natural ligand of three unusual tumor necrosis factor receptors named BAFF-R, TACI, and BCMA, all of which have differing binding affinities for it. These receptors are expressed mainly on mature B lymphocytes (TACI is also found on a subset of T-cells and BCMA on plasma cells). TACI binds worst since its affinity is higher for a protein similar to BAFF, called a proliferation-inducing ligand (APRIL). BCMA displays an intermediate binding phenotype and will work with either BAFF or APRIL to varying degrees. Signaling through BAFF-R and BCMA stimulates B lymphocytes to undergo proliferation and to counter apoptosis. All these ligands act as heterotrimers (i.e. three of the same molecule) interacting with heterotrimeric receptors, although BAFF has been known to be active as either a hetero- or homotrimer. BAFF acts as a potent B cell activator and has been shown to play an important role in the proliferation and differentiation of B cells. 
  • References
  • Limited Use License

    The Biotin AviTag technology is covered by U.S. Pat. No: 5,874,239 and includes any and all materials, methods, kits and related derivatives claimed by this patent. The purchase of the Acrobiosystems’s Avitag™ proteins confers to the purchaser the limited right to use the Avitag™ technology for non-commercial, or research use, or for purposes of evaluating the Avitag™ technology.

    Commercial use of the Avitag™ technology to manufacture a commercial product, or use of the Avitag™ technology to facilitate or advance research which will be applied to the development of a commercial product requires a license from Avidity, LLC. Examples of Commercial use include, but are not limited to biosensors, diagnostics, therapeutic applications, proximity assays, and drug screening assays.

  • Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.

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