Human BAFF/BLyS/TNFSF13B Antibody

Catalog #: MAB1242 Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
MAB1242-100
MAB1242-SP

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Human BAFF/BLyS/TNFSF13B Antibody Summary

Species Reactivity

Human

Specificity

Detects human BAFF/BLyS/TNFSF13B in direct ELISAs.

Source

Monoclonal Mouse IgG₁ Clone # 137317

Purification

Protein A or G purified from hybridoma culture supernatant

Immunogen

E. coli-derived recombinant human BAFF/BLyS/TNFSF13B
Ala81-Leu285
Accession # Q9Y275

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Label

Unconjugated

Applications

Recommended Concentration

Sample

Immunohistochemistry

5-25 µg/mL

Immersion fixed paraffin-embedded sections of human lymph node

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.

Scientific Data

Immunohistochemistry

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BAFF/BLyS/TNFSF13B in Human Lymph Node. BAFF/BLyS/TNFSF13B was detected in immersion fixed paraffin-embedded sections of human lymph node using Mouse Anti-Human BAFF/BLyS/TNFSF13B Monoclonal Antibody (Catalog # MAB1242) at 5 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (VC001). Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (CTS013). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to cell surface and cytoplasm. Staining was performed using our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store 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: BAFF/BLyS/TNFSF13B

BAFF (also known as TALL-1, BLyS, and THANK) is a type II transmembrane glycoprotein belonging to the TNF superfamily and has been designated as TNF superfamily member 13B (TNFSF13B). Human BAFF is a 285 amino acid (aa) protein consisting of a 218 aa extracellular domain, a 21 aa transmembrane region and a 46 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). Human BAFF may be shed from the cell surface by proteolytic cleavage between R133 and Ala134 to yield a soluble form of the protein that is 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 expressd in B cells. BAFF and APRIL can form active heteromers that bind to TACI (9). BAFF is expressed in peripheral blood mononuclear cells, in spleen and lymph nodes. Its expression in resting monocytes is up-regulated 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

Schneider, P. et al. (1999) J. Exp. Med. 189:1747.
Mukhopadhyay, A. et al. (1999) J. Biol. Chem. 274:15978.
Karpusas, M. et al. (2002) J. Mol. Biol. 315:1145.
Liu, Y. et al. (2002) Cell 108:383.
Cheema, G.S. et al. (2001) Arthr. Rheum. 44:1313.
Marsters, S.A. et al. (2000) Curr. Biol. 10:785.
Thompson, J.S. et al. (2001) Science 293:2108.
Ng, L.G. et al. (2004) J. Immunol. 173:807.
Roschke, V. et al. (2002) J. Immunol. 169:4314.
Batten, M. et al. (2000) J. Exp. Med. 192:1453.
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); 102123214 (Cynomolgus Monkey)

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