BAFF Recombinant Protein Cat. No.: 96-827

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psi-iconSpecifications
SPECIES:Human
SOURCE SPECIES:HEK293 cells
SEQUENCE:Ala 134 - Leu 285
FUSION TAG:His Tag
TESTED APPLICATIONS:ELISA, WB
APPLICATIONS:This recombinant protein can be used for E, WB. For research use only.
BIOLOGICAL ACTIVITY: Measured by its binding ability in a functional ELISA. Immobilized Human BAFF, His Tag at 5 ug/mL (100 uL/well) can bind Biotinylated Human BCMA, Fc Tag with a linear range of 3.9-15.6 ng/mL (QC tested).
psi-iconProperties
PURITY:>95% as determined by SDS-PAGE.

Endotoxin level is less than 1.0 EU per ug by the LAL method.
PREDICTED MOLECULAR WEIGHT:18.4 kDa
PHYSICAL STATE:Lyophilized
BUFFER:PBS, pH7.4
STORAGE CONDITIONS:Lyophilized Protein should be stored at -20˚C or lower for long term storage. Upon reconstitution, working aliquots should be stored at -20˚C or -70˚C. Avoid repeated freeze-thaw cycles.
psi-iconAdditional Info
ALTERNATE NAMES:TNFSF13B,BAFF,BLYS,CD257,DTL,TALL-1,TALL1,THANK,TNFSF20,ZTNF4
ACCESSION NO.:AAH20674.1
OFFICIAL SYMBOL:BAFF
GENE ID:10673
psi-iconBackground and References
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:1) Oren,D.A., et al., 2002, Nat. Struct. Biol. 9 (4): 288–292.
2) Daridon C, er al.,2008, Autoimmun Rev 7 (4): 267–71.

FOR RESEARCH USE ONLY.

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