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PD-L1 His Tag Protein, Human

PD-L1 His Tag Protein, Human

Catalog Number: UA010001 Reactivity: Human Conjugation: Unconjugated Brand: UA BIOSCIENCE
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Regular price $180 USD
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Product Details

Product Specification


Species Human
Synonyms Programmed cell death 1 ligand 1, CD274, B7-H1, Programmed death ligand 1
Accession Q9NZQ7
Amino Acid Sequence

Phe19-Arg238, with C-terminal His Tag

Expression System HEK293
Molecular Weight

30-35 KD(Reducing)

Purity >95%, by SDS-PAGE under reducing conditions
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Tag His Tag
Physical Appearance Lyophilized Powder
Storage Buffer

PBS, pH 7.2,5% trehalose

Reconstitution

Reconstitute at less than 1 mg/mL according to the size in ultrapure water after rapid centrifugation .

Stability & Storage

· 12 months from date of receipt, lyophilized powder stored at -20 to -80℃.

· 3 months, -20 to -80℃ under sterile conditions after reconstitution.

· 1 week, 2 to 8℃ under sterile conditions after reconstitution.

· Please avoid repeated freeze-thaw cycles.

Background

PD-L1, also known as B7-H1 and CD274, is a 290 amino acid transmembrane glycoprotein in the B7 family of immune regulatory molecules. It has an extracellular domain that can interact with PD-1, which belongs to the CD28/CTLA4 family expressed on activated lymphoid cells. The PD1/PD-L1 interaction ensures that activation of the immune system occurs at the appropriate time. This will minimize the possibility of chronic autoimmune inflammation. PD-L1 is known to inhibit proliferation of T cells via apoptosis. It also plays an important role in arresting cell-cycle progression. This makes PD-L1 an attractive therapeutic target for cancer and immunologic diseases.

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Bioactivity

When PD-L1 His tag, Human (Cat. No. UA010001) is immobilized at 2.8µg/mL, it binds to PD-1 Fc Chimera, Human(Cat. No. UA010002) with an EC50 of 4.334-5.695µg/mL.
PD-L1 His Tag, Human (Cat. No.UA010001) captured on CM5 chip via anti-His antibody, can bind PD-1 Fc Chimera, Human (Cat. No. UA010002) with an affinity constant of 0.1836 μM as determined in a SPR assay (Biacore T200).
Loaded PD-1 Fc Chimera, Human (Cat. No. UA010002) on Protein A Biosensor, can bind PD-L1 His Tag, Human (Cat. No.UA010001) with an affinity constant of 1.3 μM as determined in BLI assay.

SDS-PAGE

PD-L1 His Tag, Human,1μg on SDS-PAGE under reducing and Non-reducing condition. The purity is greater than 95%.

ELISA

Immobilized PD-L1 His Tag Protein, Human (Cat. No. UA010001) at 1.0μg/mL (100μL/well) can bind S-RMab® PD-L1 Recombinant Rabbit mAb (SDT-119-286) (Cat. No. S0B2287) with EC50 of 0.89-1.21ng/mL.

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