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BAFF /CD257 Molecule  


BAFF / CD257 Molecule Synonym Name

TNFSF13B,BAFF,BLYS,CD257,DTL,TALL-1,TALL1,THANK,TNFSF20,ZTNF4

BAFF / CD257 Protein Products

Cat No Species Product Description
BAF-H4218HumanHuman BAFF / TNFSF13B / CD257 Protein, Tag Free
BAF-H4268HumanHuman BAFF / TNFSF13B / CD257 Protein, Fc Tag
BAF-H5248HumanHuman BAFF / TNFSF13B / CD257 Protein
BAF-H82F3HumanBiotinylated Human BAFF / TNFSF13B / CD257 Protein, Fc Tag, Avi Tag (Avitag?)
BAF-H82Q2HumanBiotinylated Human BAFF / TNFSF13B / CD257 Protein, Avi Tag (Avitag?)
BAF-HF268HumanFITC-Labeled Human BAFF / TNFSF13B / CD257 Protein, Fc Tag

BAFF / CD257 Molecule 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.?

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