B-Cell Activating Factor (TNFSF13B) Active Protein | TNFSF13B active protein

Recombinant Human B-Cell Activating Factor (TNFSF13B)

Cat. Num. AAA4159718

• Gene Names: TNFSF13B; DTL; BAFF; BLYS; CD257; TALL1; THANK; ZTNF4; TALL-1; TNLG7A; TNFSF20
• Purity: >95% as determined by SDS-PAGE
• Synonyms: B-Cell Activating Factor (TNFSF13B); Recombinant Human B-Cell Activating Factor (TNFSF13B); B cell Activating Factor belonging to the TNF family; BAFF; Tumor necrosis factor ligand superfamily member 13B; TNFSF13B; TNFSF20; B lymphocyte stimulator; BLys; THANK; Dendritic cell-derived TNF-like molecule; TNF-and APOL-related leukocyte expressed ligand 1; TALL-1; CD_antigen=CD257; TNFSF13B active protein

• Host: E Coli
• Purity/Purification: >95% as determined by SDS-PAGE
• Form/Format: Lyophilized from a 0.2 um filtered solution in PBS, pH 7.5.
• Sequence Length: 266

• Bioactivity: The ED(50) was determined by a cell proliferation assay using anti-IgM stimulated murine B cells, and is less than 2.0 ng/mL, corresponding to a specific activity of 5.0 x 10^5 IU/mg
• Endotoxin Level: <1.0 EU/ug of recombinant protein as determined by the LAL method.
• Reconstitution: A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than 0.1 mg/mL. This solution can then be diluted into other buffers.
• Preparation and Storage: The lyophilized protein is stable for at least one year from date of receipt at-70 degree C. Upon reconstitution, this cytokine can be stored in working aliquots at 2-8 degree C for one month, or at-20 degree C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles.

Related Product Information for TNFSF13B active protein

The B cell-activating factor from the TNF family (BAFF), is emerging as an important regulator of B cell and T cell responses. BAFF was originally identified as a factor responsible for B cell survival and maturation. BAFF binds to several receptors. These include transmembrane activator and calcium modulator and cyclophilin ligand interactor (TACI), BAFF-R (BR3), and B cell maturation Ag (BCMA). BAFF-R appears to be particularly important for the regulation of B cell survival and maturation in the spleen, because A/WySnJ mice expressing a defective BAFF-R have disrupted B cell maturation, similar to that seen in BAFF-deficient mice.

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: 18.0 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
• Protein Family: Tumor necrosis factor ligand superfamily
• 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