BAFF active protein

Human BAFF Protein

Cat. Num. AAA9718665

• Gene Names: TNFSF13B; DTL; BAFF; BLYS; CD257; TALL1; THANK; ZTNF4; TALL-1; TNLG7A; TNFSF20
• Purity: >96% as determined by SDS-PAGE
• Synonyms: BAFF; Human BAFF Protein; Recombinant Human BAFF Protein (Tumor necrosis factor ligand superfamily member 13B) expressed in Human Cells; BLYS; CD257; DTL; TALL-1; TALL1; THANK; TNFSF20; ZTNF4; Tumor necrosis factor ligand superfamily member 13B; TNFSF13B; BAFF active protein

• Host: Human Cells
• Purity/Purification: >96% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS, pH 7.4
• Sequence: Amino acid sequence derived from soluble form of human BAFF (Q9Y275-1) (Ala 134-Leu 285) was expressed and purified.
• Sequence Length: 266

• Species: Human
• Endotoxin: The Endotoxin level is less than 1.0 EU per mug of the protein as determined by the LAL method
• Protein Length: The recombinant human BAFF consists of 152 amino acids and has a predicted molecular mass of 17 kDa. In SDS-PAGE under reducing conditions, rhBAFF is migrates as an approximately 19 kDa band.
• Activity: Measured in a cell proliferation assay using anti-IgM stimulated mouse B cells. The ED50 for this effect is typically 0.4-2 ng/mL in the presence of goat anti-mouse IgM mu chain.
• Usage Notes: Always centrifuge tubes before opening. It is recommended to reconstitute the lyophilized Human BAFF protein in sterile ddH2O not less than 100ug/ml, which can then be further diluted to other aqueous solutions.
• Preparation and Storage: Item should be stored desiccated below -20 degree C. Upon reconstitution, the protein should be stored at 4 degree C between 2-7 days and for future use below -20 degree C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles.

SDS-Page

(Fig.SDS-PAGE analysis of Human BAFF protein.)

Related Product Information for BAFF active protein

B lymphocyte stimulator (BLyS), also known as TNFSF13B, CD257 and BAFF, is single-pass type II membrane protein, which belongs to the tumor necrosis factor family. BAFF is abundantly expressed in peripheral blood Leukocytes and is specifically expressed in monocytes and macrophages. BAFF is a cytokine and serves as a ligand for receptors TNFRSF13B (TACI), TNFRSF17 (BCMA), and TNFRSF13C (BAFFR). These receptors is a prominent factor in B cell differentiation, homeostasis, and selection. BLyS levels affect survival signals and selective apoptosis of autoantibody-producing B cells. Thus, it acts as a potent B cell activator and has been shown to play an important role in the proliferation and differentiation of B cells. Overexpression of BLyS in mice can lead to clinical and serological features of systemic lupus erythematosus (SLE) and Sjögren's syndrome (SS). BLyS as an attractive therapeutic target in human rheumatic diseases. The ability of BLyS to regulate both the size and repertoire of the peripheral B cell compartment raises the possibility that BLyS and antagonists thereof may form the basis of a therapeutic trichotomy. As an agonist, BLyS protein may enhance humoral immunity in congenital or acquired immunodeficiencies such as those resulting from viral infection or cancer therapy.

NCBI and Uniprot Product Information

• NCBI GI #: 224548983
• NCBI GeneID: 10673
• NCBI Accession #: NP_001139117.1
• NCBI GenBank Nucleotide #: NP_001139117.1
• UniProt Accession #: Q9Y275
• Molecular Weight: 17 kDa
• NCBI Official Full Name: tumor necrosis factor ligand superfamily member 13B isoform 2
• NCBI Official Synonym Full Names: TNF superfamily member 13b
• NCBI Official Symbol: TNFSF13B
• NCBI Official Synonym Symbols: DTL; BAFF; BLYS; CD257; TALL1; THANK; ZTNF4; TALL-1; TNLG7A; TNFSF20
• NCBI Protein Information: tumor necrosis factor ligand superfamily member 13B
• UniProt Protein Name: Tumor necrosis factor ligand superfamily member 13B
• UniProt Gene Name: TNFSF13B
• UniProt Synonym Gene Names: BAFF; BLYS; TALL1; TNFSF20; ZTNF4; BLyS; TALL-1
• UniProt Entry Name: TN13B_HUMAN

NCBI Description

The protein encoded by this gene 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. Alternatively spliced transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, Mar 2011]

Uniprot Description

BAFF: Cytokine that binds to TNFRSF13B/TACI and TNFRSF17/BCMA. TNFSF13/APRIL binds to the same 2 receptors. Together, they form a 2 ligands -2 receptors pathway involved in the stimulation of B- and T-cell function and the regulation of humoral immunity. A third B-cell specific BAFF-receptor (BAFFR/BR3) promotes the survival of mature B-cells and the B-cell response. Belongs to the tumor necrosis factor family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Apoptosis; Membrane protein, integral; Cell cycle regulation; Cytokine

Chromosomal Location of Human Ortholog: 13q32-q34

Cellular Component: extracellular space; perinuclear region of cytoplasm; cytoplasm; plasma membrane; integral to membrane

Molecular Function: protein binding; cytokine activity; tumor necrosis factor receptor binding; receptor binding

Biological Process: cell proliferation; B cell costimulation; B cell homeostasis; immunoglobulin secretion; T cell costimulation; positive regulation of cell proliferation; positive regulation of germinal center formation; positive regulation of B cell proliferation; immune response; positive regulation of T cell proliferation; signal transduction