Abbreviation
Recombinant Human TNFRSF11B protein, partial (Active)
Purity
>95% as determined by SDS-PAGE.
Endotoxin
Less than 1.0 EU/μg as determined by LAL method.
Activity
Fully biologically active when compared to standard. The ED50 as determined by neutralizing the stimulation of U937 cells is less than 10 ng/ml, corresponding to a specific activity of >1.0x105 IU/mg in the presence of 10 ng/mL soluble rHuRANKL (sRANKL).
Alternative Names
MGC29565; OCIF; OPG; Osteoclastogenesis inhibitory factor; Osteoprotegerin; PDB5; TNF receptor superfamily member 11b; TNFRSF 11B; TNFRSF11B; TR 1; TR1; TR11B_HUMAN; Tumor necrosis factor receptor superfamily member 11B
Species
Homo sapiens (Human)
Expression Region
22-194aa
Target Protein Sequence
ETFPPKYLHY DEETSHQLLC DKCPPGTYLK QHCTAKWKTV CAPCPDHYYT DSWHTSDECL YCSPVCKELQ YVKQECNRTH NRVCECKEGR YLEIEFCLKH RSCPPGFGVV QAGTPERNTV CKRCPDGFFS NETSSKAPCR KHTNCSVFGL LLTQKGNATH DNICSGNSES TQK
Note: The complete
sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is
translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application,
please explicitly request the full and complete sequence of this protein before ordering.
Tag Info
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Buffer
Lyophilized from a 0.2 μm filtered 30 % acetonitrile, 0.1 % TFA
Lead Time
5-10 business days
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Datasheet & COA
Please contact us to get it.
Description
TNFRSF11B (osteoprotegerin) functions as a soluble decoy receptor for RANKL, making it a critical regulator of osteoclast differentiation and a valuable tool for dissecting RANK/RANKL signaling. This tag-free recombinant construct covers the extracellular ligand-binding domain (aa 22–194) and demonstrates potent neutralization of sRANKL-stimulated U937 cells with an ED50 below 10 ng/mL, corresponding to a specific activity exceeding 1.0 × 10⁵ IU/mg—evidence that supports use in competitive inhibition assays, blocking antibody screening, and RANKL-binding characterization by SPR or BLI. Although expressed in *E. coli*, the confirmed biological activity indicates sufficient conformational integrity of the cysteine-rich domains for functional ligand-receptor interaction studies, including small-molecule inhibitor screening and positive control applications in ELISA-based binding assays. Purity exceeding 95% by SDS-PAGE combined with endotoxin levels below 1.0 EU/μg satisfies the criteria typical for cell-based neutralization experiments requiring minimal innate immune interference.