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Product Details
Synonyms
PD-L1, CD274, B7-H1, PDCD1L1, PDCD1LG1
Source
PE-Labeled Human PD-L1 (19-238) Protein, His Tag (PD1-HP2H3) is expressed from human 293 cells (HEK293). It contains AA Phe 19 - Arg 238 (Accession # Q9NZQ7-1).
Predicted N-terminus: Phe 19
Molecular Characterization
This protein carries a polyhistidine tag at the C-terminus.
Conjugate
PE
Excitation Wavelength: 488 nm / 561 nm
Emission Wavelength: 575 nm
Purity
>90% as determined by SDS-PAGE.
Formulation
Lyophilized from 0.22 μm filtered solution in PBS, 0.2% BSA, pH7.4 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.
Shipping and Storage
This product is shipped at ambient temperature.
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please protect from light and avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
ACRO Quality Management System
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Performance Data
Evaluation of CAR expression
FACS analysis of PE-Labeled Human PD-L1 (19-238) Protein binding cell surface Human PD-1
5e5 of HEK293/Human PD-1 Stable Cell Line were stained with 100 μL of 1:10 dilution (10 μL stock solution in 100 μL FACS buffer) of PE-Labeled Human PD-L1 (19-238) Protein, His Tag (Cat. No. PD1-HP2H3) and negative control protein respectively (Fig. C and B), and non-transfected 293 cells were used as a control (Fig. A). PE signal was used to evaluate the binding activity (QC tested).
Protocol
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FAQ
- product
Can lyophilized proteins remain stable during room-temperature shipping or temporary room-temperature exposure?
In general, lyophilized proteins remain stable during room-temperature shipping or temporary exposure to room-temperature conditions.
Many ACROBiosystems recombinant proteins are supplied in lyophilized (freeze-dried) form. The lyophilization process effectively removes moisture from the product, helping reduce degradation-related reactions and improve protein stability during transportation and storage.
To evaluate the stability of lyophilized proteins under normal temperature conditions, ACROBiosystems conducted a stability study on 11 representative lyophilized protein products at 37°C. The study demonstrated that these proteins maintained good quality stability after storage at 37°C for approximately 20 days. Based on these validation results, temporary room-temperature exposure during shipping or handling is generally not expected to have a significant impact on product quality or downstream application performance.
To ensure optimal long-term stability, products should be stored according to the storage conditions specified in the product Certificate of Analysis (COA) upon receipt.
Supporting Document
Background
Recent Advances
Drug Development Progress- English Name：
Programmed death-ligand 1
- Category：
- Approved Drugs：
12 Details
- Drugs in Clinical Trials：
176 Details
- Highest Development Stage：
Approved
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