• Species Reactivity

  Mouse

• Specificity

  Detects mouse BAFF/BLyS/TNFSF13B in direct ELISAs and Western blots. In Western blots, this antibody does not cross-react with recombinant mouse (rm) 4-1BB Ligand, rmEDA, rmFas Ligand, rmOX40 Ligand, rmTNF-alpha, rmTRANCE, rmTWEAK, recombinant human (rh) APRIL, rhBAFF, rhEDA-A2, rhGITR Ligand, rhLIGHT, rhLymphotoxin alpha 1/ beta 2, rhLymphotoxin alpha 2/ beta 1, rhTNF-alpha, rhTRAIL, rhVEGI, recombinant canine, cotton rat, equine, feline, porcine, or rat TNF-alpha.

• Source

  Monoclonal Rat IgG    _2A Clone # 121808

• Purification

  Protein A or G purified from hybridoma culture supernatant

• Immunogen

  Mouse myeloma cell line NS0-derived recombinant mouse BAFF/BLyS/TNFSF13B    
  Ala127-Leu309    
  Accession # Q9WU72

• Formulation

  Supplied in a saline solution containing BSA and Sodium Azide.

• Label

  Alexa Fluor 488

Applications

• Recommended    
  Concentration

  Sample

• Intracellular Staining by Flow Cytometry

  5 μL/10    ⁶ cells

  See below

• 
  

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

Data Examples

Preparation and Storage

• Shipping

  The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

• Stability & Storage

  Protect from light.    Do not freeze.    

• 12 months from date of receipt, 2 to 8 °C as supplied.

Background: BAFF/BLyS/TNFSF13B

BAFF (also known as TALL-1, BLyS, THANK) is a type II transmembrane glycoprotein belonging to the TNF superfamily and has been designated as TNF superfamily member 13B (TNFSF13B). Mouse BAFF is a 309 amino acid (aa) protein consisting of a 248 aa extracellular domain, a 21 aa transmembrane region and a 45 aa cytoplasmic tail (1, 2). BAFF has the typical structural characteristics of the TNF superfamily ligands. It is a homotrimeric protein having the structurally conserved motif known as TNF homology domain (3, 4). A higher ordered structure composed of a cluster of trimeric units resembling the structure of a viral capsid has also been reported (4). Mouse BAFF may be shed from the cell surface by proteolytic cleavage between R126 and Ala 127 to yield a soluble form of the protein detectable in serum (1, 5). Within the TNF superfamily BAFF shares the highest homology (48%) with APRIL (1). BAFF shares with APRIL the ability to bind to BCMA and TACI and also binds specifically to BAFF receptor(BAFF R, also known as BR3 or TNFSFR13C), which is the principal BAFF receptor (6-8). All three receptors are type III transmembrane proteins that are expressed in B cells. BAFF and APRIL can form active heteromers that bind TACI (9). BAFF is expressed in peripheral blood mononuclear cells, in spleen and lymph nodes. Its expression in resting monocytes is upregulated by IFN-alpha, IFN-beta, LPS and IL-10. BAFF provides critical survival signals to a subset of B cells with intermediate maturation status (T2 B cells) during the immune response (10). BAFF also plays an important role in the development of lymphoid tissue and enhances the survival of activated memory B cells (7, 11). Human and mouse BAFF share 86% aa sequence identity (1).

• References:

1. Schneider, P. et al. (1999) J. Exp. Med. 189:1747.

2. Mukhopadhyay, A. et al. (1999) J. Biol. Chem. 274:15978.

3. Karpusas, M. et al. (2002) J. Mol. Biol. 315:1145. 

4. Liu, Y. et al. (2002) Cell 108:383. 

5. Cheema, G.S. et al. (2001) Arthr. Rheum. 44:1313. 

6. Marsters, S.A. et al. (2000) Curr. Biol. 10:785.

7. Thompson, J.S. et al. (2001) Science 293:2108.

8. Ng, L. G. et al. (2004) J. Immunol. 173:807.

9. Roschke, V. et al. (2002) J. Immunol. 169:4314.

10. Batten, M. et al. (2000) J. Exp. Med. 192:1453.

11. Avery, D.T. et al. (2003) J. Clin. Invest. 112:286.

• Long Name:

  B cell Activating Factor

• Entrez Gene IDs:

  10673 (Human); 24099 (Mouse); 498666 (Rat)

• Alternate Names:

  ApoL related ligand TALL-1; B lymphocyte stimulator; BAFF; BAFFB-cell activating factor; B-cell-activating factor; BLyS; BLYSB-lymphocyte stimulator; CD257 antigen; CD257; Dendritic cell-derived TNF-like molecule; DTL; TALL1; TALL-1delta BAFF; TALL1Delta4 BAFF; THANK; TNF- and APOL-related leukocyte expressed ligand 1; TNF and ApoL-related leukocyte expressed ligand 1; TNF homolog that activates apoptosis; TNFSF13B; TNFSF20; tumor necrosis factor (ligand) superfamily, member 13b; tumor necrosis factor (ligand) superfamily, member 20; tumor necrosis factor ligand superfamily member 13B; tumor necrosis factor superfamily, member 13b; tumor necrosis factor-like protein ZTNF4; ZTNF4