Active Recombinant Human TNFSF13B Protein

• Cat.No.: TNFSF13B-299T
• Product Overview: Recombinant Human TNFSF13B Protein without tag was expressed in CHO.

Specification

• Description: B-cell activating factor, also known as BAFF, TALL-1, TNAK, and zTNF4, is a member of theTNF ligand superfamily designated TNFSF13B. Produced by macrophages, dendritic cells, and T lymphocytes, BAFF promotes the survival of B cells and is essential for B cell maturation. BAFF binds to three TNF receptor superfamily members: B-cell maturation antigen (BCMA/TNFRSF17), transmembrane activator and calcium-modulator and cyclophilin ligand interactor (TACI/TNFRSF13B) and BAFF receptor (BAFF R/BR3/TNFRSF 13C). These receptors are type III transmembrane proteins lacking a signal peptide. Whereas TACI and BCMA bind BAFF and another TNF superfamily ligand, APRIL(a proliferation-inducing ligand), BAFF R selectively binds BAFF. The BAFF R extracellular domain lacks the TNF receptor canonical cysteine-rich domain (CRD) and contains only a partial CRD with four cysteine residues. Human and mouse BAFF R share 56% aa sequence identity. BAFF R is highly expressed in spleen, lymph node and resting B cells. It is also expressed at lower levels in activated B cell, resting CD4+ T cells, thymus and peripheral blood leukocytes.
• Source: CHO
• Species: Human
• Form: Sterile Filtered White lyophilized (freeze-dried) powder.
• Bio-activity: ED50< 20 ng/mL, determined by dose-dependent mitogenic activity on human RPMI 8226 cells, corresponding to a specific activity of >5.0 4 units/mg.
• Molecular Mass: 17kDa, observed by non-reducing SDS-PAGE.
• AA Sequence: AVQGPEETVTQDCLQLIADSETPTIQKGSYTFVPWLLSFKRGSALEEKENKILVKETGYFFIYGQVLYTDKTYAMGHLIQRKKVHVFGDELSLVTLFRCIQNMPETLPNNSCYSAGIAKLEEGDELQLAIPRENAQISLDGDVTFFGALKLL
• Endotoxin: < 0.2 EU/μg, determined by LAL method.
• Purity: > 95% as analyzed by SDS-PAGE and HPLC.
• Storage: Lyophilized recombinant human B-Cell Activating Factor (BAFF) remains stable up to 6 months at -80 centigrade from date of receipt. Upon reconstitution, rh-BAFF should be stable up to 1 week at 4 centigrade or up to 2 months at -20 centigrade.
• Storage Buffer: Lyophilized after extensive dialysis against PBS.
• Reconstitution: Reconstituted in ddH2O or PBS at 100 μg/mL.

Gene Information

• Gene Name: TNFSF13B tumor necrosis factor (ligand) superfamily, member 13b [ Homo sapiens ]
• Official Symbol: TNFSF13B
• Synonyms: TNFSF13B; tumor necrosis factor (ligand) superfamily, member 13b; TNFSF20; tumor necrosis factor ligand superfamily member 13B; BAFF; BLYS; CD257; TALL 1; TALL1; THANK; delta BAFF; Delta4 BAFF; B-lymphocyte stimulator; B-cell-activating factor; ApoL related ligand TALL-1; TNF homolog that activates apoptosis; dendritic cell-derived TNF-like molecule; tumor necrosis factor-like protein ZTNF4; TNF and ApoL-related leukocyte expressed ligand 1; tumor necrosis factor (ligand) superfamily, member 20; DTL; ZTNF4; TALL-1
• Gene ID: 10673
• mRNA Refseq: NM_001145645
• Protein Refseq: NP_001139117
• MIM: 603969
• UniProt ID: Q9Y275