Recombinant Human BAFF Receptor (rHuBAFF-R)

• Catalog Number: orb1495081
• Category: Proteins
• Description: BAFF Receptor (BAFF-R), a member of the TNFR superfamily, is highly expressed in spleen, lymph node, and resting B cells and to some extent in activated B cells, resting CD4+ cells and peripheral blood leukocytes. BAFF-R is a type III transmembrane protein that binds with high specificity to BAFF (TNFSF13B). BAFF-R/BAFF signaling plays a critical role in B cell survival and maturation.
• Form/Appearance: Lyophilized from a 0.2mm filtered concentrated solution in 20mM PB, pH 8.0, 500mM NaCl.
• Purity: > 95% by reduced SDS-PAGE analyses.
• MW: Approximately 7.7 kDa, a single non-glycosylated polypeptide chain containing 76 amino acids.
• Protein Sequence: MRRGPRSLRG RDAPAPTPCV PAECFDLLVR HCVACGLLRT PRPKPAGASS PAPRTALQPQ ESVGAGAGEA ALPLPG
• Source: Escherichia coli.
• Biological Activity: Fully biologically active when compared to standard. Determined by its ability to block BAFF induced mouse splenocyte survival. The expected ED50 for this effect is 1.0-5.0 μg/ml in the presence of 1.0μg/ml of human soluble BAFF, corresponding to a Specific Activity of ＞200 IU/mg.
• Endotoxins: Less than 1EU/mg of rHuBAFF-R as determined by LAL method.
• Storage: This lyophilized preparation is stable at 2-8°C, but should be kept at -20°C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8°C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20°C to -70°C. Avoid repeated freeze/thaw cycles.
• Buffer/Preservatives: Lyophilized from a 0.2mm filtered concentrated solution in 20mM PB, pH 8.0, 500mM NaCl.
• Note: For research use only
• Application notes: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20°C. Further dilutions should be made in appropriate buffered solutions.
• Expiration Date: 6 months from date of receipt.