Purity
≥ 95% as determined by SDS-PAGE.
≥ 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
Tag Info
C-terminal 6xHis-tagged
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.
Buffer
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose.
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/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
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.
Lead Time
3-7 business days
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
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, co...Read more
MSDS
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