BAFF Receptor (BAFFR), 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. BAFFR is a type III transmembrane protein that binds with high specificity to BAFF (TNFSF13B). BAFFR/BAFF signaling plays a critical role in B cell survival and maturation. Recombinant human BAFFR is a 76aa polypeptide (7.7kD) corresponding to the extracellular portion of the full BAFFR protein.
Source
Recombinant protein corresponding to human BAFF Receptor, expressed in E.coli.
Biological Activity
Determined by its ability to block BAFF induced mouse splenocyte survival. The expected ED50 for this effect is 2-4ug/ml in the presence of 1ug/ml of human soluble BAFF.
Endotoxin
<0.1ng/ug (1EU/ug)
AA Sequence
MRRGPRSLRG RDAPAPTPCV PAECFDLLVR HCVACGLLRT PRPKPAGASS PAPRTALQPQ ESVGAGAGEA ALPLPG
Storage and Stability
May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Purity
~95% (SDS-PAGE and HPLC)
Form
Supplied as a lyophilized powder.
Important Note
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.