TNFSF13B/BAFF/CD257 recombinant protein

Recombinant Human TNFSF13B/BAFF/CD257 (N-6His)

Cat. Num. AAA2569048

• Gene Names: TNFSF13B; DTL; BAFF; BLYS; CD257; TALL1; THANK; ZTNF4; TALL-1; TNFSF20
• Purity: >95% as determined by reducing SDS-PAGE
• Synonyms: TNFSF13B/BAFF/CD257; Recombinant Human TNFSF13B/BAFF/CD257 (N-6His); Tumor necrosis factor ligand superfamily member 13B; B lymphocyte stimulator; BLyS; B-cell-activating factor; BAFF; Dendritic cell-derived TNF-like molecule; TNF- and APOL-related leukocyte expressed ligand 1; TALL-1; TNFSF13B/BAFF/CD257 recombinant protein

• Host: Human Cells
• Purity/Purification: >95% as determined by reducing SDS-PAGE
• Form/Format: Lyophilized from a 0.2um filtered solution of PBS, pH7.4.
• Sequence: Ala134-Leu285

• Species: Human
• Tag: N-6His
• Endotoxin: <1.0EU per ug as determined by the LAL method.
• Protein Construction: Recombinant Human TNF Ligand Superfamily Member 13B is produced by our Mammalian expression system and the target gene encoding Ala134-Leu285 is expressed with a 6His tag at the N-terminus.
• Preparation and Storage: Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80 degree C. Reconstituted protein solution can be stored at 4-8 degree C for 2-7 days. Aliquots of reconstituted samples are stable at < -20 degree C for 3 months.; This product is provided as lyophilized powder which is shipped with ice packs.

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Related Product Information for TNFSF13B/BAFF/CD257 recombinant protein

TNFSF13B/TNFSF20 belongs to the tumor necrosis factor family. It abundantly is expressed in peripheral blood Leukocytes and is specifically expressed in monocytes and macrophages. Also found in the spleen, lymph node, bone marrow, T-cells and dendritic cells. A lower expression seen in placenta, heart, lung, fetal liver, thymus, and pancreas. Isoform 2 is expressed in many myeloid cell lines. 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. Isoform 2 seems to inhibit isoform 1 secretion and bioactivity. Isoform 3 acts as a transcription factor for its own parent gene, in association with NF-kappa-B p50 subunit, at least in autoimmune and proliferative B-cell diseases. The presence of Delta4BAFF is essential for soluble BAFF release by IFNG/IFN-gamma-stimulated monocytes and for B-cell survival. It can directly or indirectly regulate the differential expression of a large number of genes involved in the innate immune response and the regulation of apoptosis. Isoform 2 heteromultimerizes with isoform 1, probably limiting the amount of functional isoform 1 on the cell surface. Isoform 3 is unlikely form trimers or bind to BAFF receptors. Mature human BAFF consists of a 46 amino acid (aa) cytoplasmic domain, a 21 aa transmembrane segment, and a 218 aa extracellular domain (ECD) with a stalk region and one TNF-like domain. Within aa 134-285 of the ECD, human BAFF shares 72% aa sequence identity with mouse BAFF.

Product Categories/Family for TNFSF13B/BAFF/CD257 recombinant protein

Cell biology; Cancer; immunology

NCBI and Uniprot Product Information

• NCBI GI #: 224548983
• NCBI GeneID: 10673
• NCBI Accession #: NP_001139117.1
• NCBI GenBank Nucleotide #: NM_001145645.2
• UniProt Accession #: Q9Y275; Q6FHD6; Q7Z5J2; E0ADT7
• Molecular Weight: 17,578 Da
• NCBI Official Full Name: tumor necrosis factor ligand superfamily member 13B isoform 2
• NCBI Official Synonym Full Names: tumor necrosis factor (ligand) superfamily, member 13b
• NCBI Official Symbol: TNFSF13B
• NCBI Official Synonym Symbols: DTL; BAFF; BLYS; CD257; TALL1; THANK; ZTNF4; TALL-1; TNFSF20
• NCBI Protein Information: tumor necrosis factor ligand superfamily member 13B; ApoL related ligand TALL-1; B-cell-activating factor; B-lymphocyte stimulator; Delta4 BAFF; TNF and ApoL-related leukocyte expressed ligand 1; TNF homolog that activates apoptosis; delta BAFF; dendritic
• 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