Abbreviation
Recombinant Human PDCD1 protein, partial (Active)
Purity
Greater than 95% as determined by SDS-PAGE.
Greater than 95% as determined by SEC-HPLC.
Endotoxin
Less than 1.0 EU/ug as determined by LAL method.
Activity
①Measured by its binding ability in a functional ELISA. Immobilized PD-1 at 2 μg/ml can bind Anti-PD-1 recombinant antibody, the EC50 of human PD-1 protein is 6.087-7.854 ng/ml.②Measured by its binding ability in a functional ELISA. Immobilized PD-1 at 2 μg/ml can bind Nivolumab, the EC50 of human PD-1 protein is 9.713-12.39 ng/ml.
Alternative Names
(Protein PD-1) (hPD-1) (CD279)
Molecular Characterization
Species
Homo sapiens (Human)
Expression Region
25-167aa
Target Protein Sequence
LDSPDRPWNPPTFSPALLVVTEGDNATFTCSFSNTSESFVLNWYRMSPSNQTDKLAAFPEDRSQPGQDCRFRVTQLPNGRDFHMSVVRARRNDSGTYLCGAISLAPKAQIKESLRAELRVTERRAEVPTAHPSPSPRPAGQFQ
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
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.
Form
Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Storage Condition
Store at -20°C/-81°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Lead Time
3-7 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, storage temperature and the stability of the product itself. Generally, the shelf life of lyophilized form is 6 months at -20°C/-80°C from the date of receipt.
Datasheet & COA
Please contact us to get it.
Description
PD-1 is a critical immune checkpoint receptor whose extracellular domain mediates interactions with PD-L1 and therapeutic antibodies targeting the PD-1/PD-L1 axis. This recombinant human PD-1 construct covers the ligand-binding extracellular domain (aa 25–167) and is expressed in mammalian cells to preserve native glycosylation and conformational integrity essential for accurate binding studies. Functional ELISA validation demonstrates robust activity, with EC50 values of 6.087–7.854 ng/ml against an anti-PD-1 recombinant antibody and 9.713–12.39 ng/ml against Nivolumab, confirming suitability for competitive blocking antibody screening, therapeutic antibody epitope mapping, and affinity characterization by SPR or BLI. The protein provides a suitable basis for immune checkpoint drug discovery assays and positive binding controls, supported by purity exceeding 95% (SDS-PAGE) and endotoxin levels below 1.0 EU/μg that satisfy criteria typical for sensitive cell-based functional studies.