General description
Soluble receptor activator of nuclear factor-κB (sRANK) also known as TNF receptor superfamily member 11a (TNFRSF11A), is encoded by the gene mapped to human chromosome 18. The encoded protein belongs to the tumor necrosis factor (TNF) receptor superfamily. RANK is widely expressed in variety of tissues, including skeletal muscle, thymus, liver, colon, small intestine, adrenal gland, osteoclast, mammary gland epithelial cells, prostate and pancreas. Recombinant human sRANK receptor is a 19.3kDa polypeptide containing the TNFR homologous cysteine rich portion of the extracellular domain of RANK receptor (175 amino acid residues).
Biochem/physiol Actions
Soluble receptor activator of nuclear factor-κB (sRANK) plays a vital role in bone remodeling and fracture repair. Alterations in the RANK signaling increase the risk of susceptibility to expansile osteolysis and Paget disease of bone (PDB2). In addition, mutation of the gene coding for RANK/RANKL/OPG has also been observed in various skeletal disorders such as osteoporosis, glucocorticoid-induced bone loss, multiple myeloma, and rheumatoid arthritis. Binding of RANKL to its receptor RANK triggers the formation and differentiation of osteoclasts with the help of various transcription factors involved in modulation of osteoclastogenesis. RANK/RANKL/OPG might act as a potent therapeutic target for bone diseases.
Physical form
Lyophilized from 10 mM Sodium Phosphate, pH 7.2.
Preparation Note
Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.
Other Notes
MQIAPPCTSE KHYEHLGRCC NKCEPGKYMS SKCTTTSDSV CLPCGPDEYL DSWNEEDKCL LHKVCDTGKA LVAVVAGNST TPRRCACTAG YHWSQDCECC RRNTECAPGL GAQHPLQLNK DTVCKPCLAG YFSDAFSSTD KCRPWTNCTF LGKRVEHHGT EKSDAVCSSS LPARK
| biological source | human |
| recombinant | expressed in E. coli |
| assay | ≥98% (HPLC),≥98% (SDS-PAGE) |
| form | lyophilized |
| potency | 30-50 ng/mL ED50 |
| mol wt | 19.3 kDa |
| packaging | pkg of 100 μg |
| technique(s) | cell culture | mammalian: suitable |
| impurities | <0.1 EU/μg endotoxin, tested |
| color | white |
| UniProt accession no. | Q9Y6Q6 |
| shipped in | wet ice |
| storage temp. | −20°C |
| Gene Information | human ... TNFRSF11A(8792) |
