Abbreviation
Recombinant Human TNFRSF9 protein, partial (Active)
Purity
Greater than 95% as determined by SDS-PAGE.
Endotoxin
Less than 1.0 EU/μg as determined by LAL method.
Activity
Loaded Human 4-1BB-His on HIS1K Biosensor, can bind Anti-Human CD137 mAb-Fc with an affinity constant of 25.5 nM as determined in BLI assay.
Alternative Names
4 1BB; 4 1BB ligand receptor; 4-1BB ligand receptor; 4-1BB Ligand Receptor T Cell; 4-1BB, mouse, homolog of; Antigen 4-1BB Homolog; CD 137; CD137; CD137 antigen; CDw137; HLDA VI; Homolog of mouse 4 1BB; ILA; induced by lymphocyte activation (ILA); Induced by lymphocyte activation; Interleukin activated receptor homolog of mouse Ly63; Ly63, mouse, homolog of; MGC2172; OTTHUMP00000044294; Receptor protein 4 1BB; T cell antigen 4 1BB homolog; T cell antigen ILA; T-cell antigen 4-1BB homolog; T-cell antigen ILA; TNF receptor superfamily member 9; TNFRSF9; TNR9_HUMAN; Tumor necrosis factor receptor superfamily member 9
Species
Homo sapiens (Human)
Expression Region
24-186aa
Target Protein Sequence
LQDPCSNCPAGTFCDNNRNQICSPCPPNSFSSAGGQRTCDICRQCKGVFRTRKECSSTSNAECDCTPGFHCLGAGCSMCEQDCKQGQELTKKGCKDCCFGTFNDQKRGICRPWTNCSLDGKSVLVNGTKERDVVCGPSPADLSPGASSVTPPAPAREPGHSPQ
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.
Protein Length
Extracellular Domain
Tag Info
C-terminal 6xHis-tagged
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 1xPBS, pH 7.4
Lead Time
Basically, we can dispatch the products out in 5-10 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
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
TNFRSF9 (4-1BB) is a costimulatory immune checkpoint receptor whose engagement on T cells amplifies anti-tumor immunity, making it a high-priority target in immuno-oncology drug development. This recombinant human 4-1BB extracellular domain (aa 24–186), expressed in mammalian cells to preserve native glycosylation and disulfide-mediated folding, demonstrates confirmed binding to an anti-CD137 mAb-Fc with a KD of 25.5 nM by BLI—validating its conformational integrity for receptor-ligand interaction assays, therapeutic antibody epitope mapping, and competitive blocking antibody screening. The C-terminal His tag enables oriented loading on biosensor tips, supporting direct affinity characterization by BLI or SPR and use as a positive control in binding assays. With purity exceeding 95% by SDS-PAGE and endotoxin levels below 1.0 EU/μg, this protein satisfies the quality criteria typical for immune checkpoint research and small-molecule or biologic inhibitor screening campaigns.