B-cell activating factor (BAFF) is a TNF ligand superfamily member and has been designated TNFSF13B. Produced by macrophages, dendritic cells, and T lymphocytes, BAFF promotes the survival of B cells and is essential for B cell maturation (1-4). 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/TNFRSF13C). These receptors are type III transmembrane proteins that lack 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, in resting CD4+ T cells, in thymus and peripheral blood leukocytes.

 

产品性质

别名（Synonyms）	CD268; BAFFR; BR3; TNFRSF13C; BROMIX; CVID4; prolixin
Uniprot No.	Q96RJ3-1
表达区间及表达系统（Source）	Recombinant Human BAFFR/TNFRSF13C Protein is expressed from HEK293 Cells with His tag at the C-terminal. It contains Ser7-Ala71.
分子量(Molecular Weight)	The protein has a predicted MW of 7.6 kDa. Due to glycosylation, the protein migrates to 13-25 kDa based on Tris-Bis PAGE result.
外观(Physical Appearance）	Sterile Filtered White lyophilized (freeze-dried) powder.
纯度（Purity）	> 95% as determined by SDS-PAGE
活性（Activity）	1.ELISA Data: Immobilized Human BAFFR, His Tag at 0.5μg/ml (100μl/Well). Dose response curve for Human BAFFR Antibody, hFc Tag with the EC50 of 6.0ng/ml determined by ELISA. 2.ELISA Data: Immobilized Human BAFF (Trimer) , hFc Tag at 5μg/ml (100μl/Well) on the plate. Dose response curve for Human BAFFR, His Tag with the EC50 of 2.3μg/ml determined by ELISA. 3.SPR Data: Human BAFFR, His Tag captured on CM5 Chip via anti-his antibody can bind Human BAFF Trimer, hFc-Flag Tag with an affinity constant of 1.21 nM as determined in SPR assay (Biacore T200).
内毒素（Endotoxin）	< 1.0 EU per 1μg of the protein by the LAL method.
制剂（Formulation）	Lyophilized from 0.22 μm filtered solution in PBS (pH 7.4). Normally 5% trehalose is added as protectant before lyophilization.
复溶（Reconstitution）	Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/mL is recommended (usually we use 1 mg/mL solution for lyophilization). Dissolve the lyophilized protein in distilled water.

 

运输与保存方法

冰袋运输。-20℃至-80℃保存，一年有效期。

复溶后，-20 至 -80°C，在未开封状态下保存 3-6 个月。复溶后，2-8°C 保存 2-7 天。

建议第一次使用时分装冻存，避免反复冻融。

 

注意事项

1. 避免反复冻融。

2. 为了您的安全和健康，请穿实验服并戴一次性手套操作。

3. 本产品仅作科研用途！

 

产品数据

 

HB220624