RANKL and RANK are members of the TNF superfamily of ligands and receptors that play an important role in the regulation of specific immunity and bone turnover. RANK (receptor) was originally identified as a dendritic-cell-membrane protein, which by interacting with RANKL augments the ability of dendritic cells to stimulate naïve T cell proliferation and to promote the survival of RANK + T cells. RANK is also expressed in a variety of tissues including skeletal muscle, thymus, liver, colon, small intestine and adrenal gland. The RANK/RANKL interaction is important in the regulation of osteoclastogenesis and in dendritic-cell-mediated T cell immune responses. Impairments in RANK signaling have been implicated in the induction of expansive osteolysis and Paget disease of bone (PDB2). Recombinant rat sRANKL is a polypeptide comprising the TNF homologous region of RANKL (174aa residues).||Source:|Recombinant protein corresponding to 174aa residues from rat sRANK Ligand, expressed in E. coli. ||Molecular Weight: |~19.4kD||Biological Activity:|Determined by its ability to induce NFkappaB in RAW264.7 cells in the absence of any cross- linking. The expected ED50 for this effect is 10-25ng/ml.||Endotoxin:|<0.1ng/ug of protein (<1EU/ug)||AA Sequence:|PAMMEGSWLD VARRGKPEAQ PFAHLTINAA DIPSGSHKVS LSSWYHDRGW AKISNMTLSN GKLRVNQDGF YYLYANICFR HHETSGSVPA DYLQLMVYVV KTSIKIPSSH NLMKGGSTKN WSGNSEFHFY SINVGGFFKL RAGEEISVQV SNPSLLDPDQ DATYFGAFKV QDID||Storage and Stability:|Lyophilized powder may be stored at -20°C. Stable for 12 months after receipt at -20°C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Reconstituted product is stable for 6 months 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.

USbio全称United States Biological，位于麻省斯万普斯科特(Swampscott, MA)。全美**的抗原抗体和生化试剂供应商，目前向全球六十余个国家的科研工作者提供约50,000种抗体、抗原和生化试剂，以质量**闻名。主要产品种类包括：抗体、生化试剂、基因克隆相关产品、培养基、生长因子等细胞因子、分子生物学试剂。美国US Biological公司是生物化学和生物学试剂的专业生产商，产品服务于免疫学，分子生物学，分子遗传学，体外诊断，组织培养等科研领域。产品精确度高，质量稳定，产品数量巨大，提供70,000多种抗体、抗原和生化试剂等。