Human PD-1 Protein, His Tag (Nanoparticle)

Synonym

PDCD1, PD1, CD279, SLEB2

Source

Human PD-1 Protein, His Tag (PD1-H52H2) is expressed from human 293 cells (HEK293). It contains AA Leu 25 - Gln 167 (Accession # Q15116-1).

Predicted N-terminus: Leu 25

Molecular Characterization

Human PD-1 Protein, His Tag is designed and expressed as nanoparticles of approximately 25 nm diameter by displaying PD-1 ECD in native conformation. The nanoparticles each was coated with an average of 180 PD-1 ECD.

The nanoparticle technology allows directional and high-density display of human PD-1 on the surface of nanoparticles, thus greatly enhances the immune response in vivo to otherwise poorly immunogenic epitopes.

This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 47.1 kDa. The protein migrates as 55-65 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Endotoxin

Less than 0.5 EU per μg by the LAL method / rFC method.

Purity

>90% as determined by SDS-PAGE.

Formulation

Lyophilized from 0.22 μm filtered solution in PBS with glycine and sodium citrate, pH8.0 with trehalose as protectant.

Contact us for customized product form or formulation.

Reconstitution

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

Storage

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:

1. -20°C to -70°C for 12 months in lyophilized state;
2. -70°C for 3 months under sterile conditions after reconstitution.

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