- SynonymPD-L1,CD274,B7-H1,PDCD1L1,PDCD1LG1
- SourceBiotinylated Human PD-L1, Fc,Avitag,His Tag (PD1-H82F3) is expressed from human 293 cells (HEK293). It contains AA Phe 19 - Arg 238 (Accession # NP_054862.1).Predicted N-terminus: Phe 19Request for sequence
- Molecular Characterization
This protein carries a human IgG1 Fc fragment at the C-terminus, followed by a polyhistidine tag. The Avi tag (Avitag™) is inserted in-between the Fc and his tags. The protein has a calculated MW of 54.0 kDa. The protein migrates as 66-75 kDa on a SDS-PAGE gel under reducing (R) condition due to glycosylation.
- BiotinylationBiotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
- Biotin:Protein RatioThe biotin to protein ratio is 0.5-1 as determined by the HABA assay.
- EndotoxinLess than 1.0 EU per μg by the LAL method.
- Purity
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
- Formulation
Lyophilized from 0.22 μm filtered solution in Tris with Glycine, Arginine and NaCl, pH7.5. Normally trehalose is added as protectant before lyophilization.
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:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
Biotinylated Human PD-L1, Fc,Avitag,His Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.
The purity of Biotinylated Human PD-L1, Fc,Avitag,His Tag (Cat. No. PD1-H82F3) was more than 90% and the molecular weight of this protein is around 120-135 kDa verified by SEC-MALS.
Immobilized Human PD-1, Fc Tag, low endotoxin (HPLC-verified) (Cat. No. PD1-H5257) at 2 μg/mL (100 μL/well) can bind Biotinylated Human PD-L1, Fc,Avitag,His Tag (Cat. No. PD1-H82F3) with a linear range of 2-39 ng/mL (QC tested).
Immobilized Human B7-1, mouse IgG2a Fc Tag, low endotoxin (Cat. No. B71-H52A4) at 5 μg/mL (100 μL/well) can bind Biotinylated Human PD-L1, Fc,Avitag,His Tag (Cat. No. PD1-H82F3) with a linear range of 0.02-0.625 μg/mL (Routinely tested).
Serial dilutions of nivolumab were added into Human PD-1, Fc Tag, low endotoxin (HPLC-verified) (Cat. No. PD1-H5257): Biotinylated Human PD-L1, Fc,Avitag,His Tag (Cat. No. PD1-H82F3) binding reactions. The half maximal inhibitory concentration (IC50) is 0.5381 μg/mL (Routinely tested).
Flow Cytometry assay shows that Biotinylated Human PD-L1, Fc,Avitag,His Tag (Cat.No. PD1-H82F3) can bind to 293 cell overexpressing human PD-1. The concentration of PD-L1 used is 1 μg/mL (Routinely tested).
FACS analysis shows that the binding of Biotinylated Human PD-L1, Fc,Avitag,His Tag (Cat. No. PD1-H82F3) to 293 overexpressing PD-1 was inhibited byincreasing concentration of neutralizinganti-PD-1 antibody. The concentration of PD-L1 used is 2 μg/mL. The IC50 is 0.64 μg/mL (Routinely tested).
Immobilized cell surface PD-1 (5x104 of cells per well) can bind Biotinylated Human PD-L1, Fc,Avitag,His Tag (Cat. No. PD1-H82F3) with an EC50 of 0.082 μg/mL (Routinely tested).
- BackgroundProgrammed cell death 1 ligand 1 (PD-L1) is also known as cluster of differentiation (CD274) or B7 homolog 1 (B7-H1), is a member of the growing B7 family of immune molecules and is involved in the regulation of cellular and humoral immune responses. B7-H1 is a cell surface immunoglobulin superfamily with two Ig-like domains within the extracellular region and a short cytoplasmic domain. PD-L1 is highly expressed in the heart, skeletal muscle, placenta and lung and weakly expressed in the thymus, spleen, kidney and liver. PD-L1 is expressed on activated T-cells, B-cells, dendritic cells, keratinocytes and monocytes. PD-L1 is up-regulated on T- and B-cells, dendritic cells, keratinocytes and monocytes after LPS and IFNG activation and up-regulated in B-cells activated by surface Ig cross-linking. PD-L1 involve in the costimulatory signal, essential for T-cell proliferation and production of IL10 and IFNG, in an IL2-dependent and a PDCD1-independent manner.
- References
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
AcroBiosystems是专注于生物药开发过程的蛋白技术和产品的全球化品牌，目前位于美国特拉华州的纽瓦克市，是一家专业研发、生产、销售蛋白相关分子生物学试剂的高科技公司。AcroBiosystems从成立之初至今一直致力于提供在药物研发过程中所需的高质量的靶点蛋白，满足市场对大批量、高批间*性的蛋白试剂的需求，产品和服务面向全球制药公司、生物技术公司及科研院所。产品包括免疫检查点蛋白、生物素标记蛋白、Fc受体蛋白、CAR-T靶点蛋白等，基于AviTagTM标记技术和化学标记技术的生物素标记蛋白系列被广泛应用于Biacore，AlphaLisa，MSD等平台。这些产品受到了学术界的*好评。
CD Feed X Supplement Plus, Liquid No.CF-1116
产品介绍
品牌：acrobiosystems
规格：500ml
产品描述：CD细胞的生长的补充液是化学定义的，能显著提高细胞密度和延长细胞活力，从而增加靶蛋白的表达，使用剂量为5-10%（V/V）。与CD 293 TGE培养基配合使用，BPM-BPfectin和293-Expression MAX-1可提高蛋白表达量。
产品特性：① 显著提高生产率
② 无动物源、无蛋白质、无血清和化学成分
储存条件：2℃-8℃，避光。
产品参数：
部分产品的详细列表：AcroBiosystems授权代理
货号 | 产品 | 规格 | 价格（美元） |
BAF-HF268 | FITC-Labeled Human BAFF / TNFSF13B / CD257 Protein, Fc Tag | 25ug | $290 |
BCA-HF254 | FITC-Labeled Human BCMA, Fc Tag | 25ug | $290 |
BCA-HF2H1 | FITC-Labeled Human BCMA, His Tag | 25ug | $290 |
![ACROBiosystems/Influenza A[A/swine/Jiangsu/J004/2018(H1N1)] Hemagglutinin (HA) Protein, His Tag/1mg/HEN](images/no_picture.gif)
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