膜杰作
Star Staining
分子别名（Synonym）
CD70,CD27LG,TNFSF7,TNFSF7G,CD27L
表达区间及表达系统（Source）
FITC-Labeled Human CD27 Ligand, His,Flag Tag (CDD-HF2D4) is expressed from human 293 cells (HEK293). It contains AA Ser 52 - Pro 193 (Accession # P32970-1).
Predicted N-terminus: His
蛋白结构（Molecular Characterization）
This protein carries a polyhistidine tag at the N-terminus, followed by a flag tag
The protein has a calculated MW of 49.3 kDa. The protein migrates as 50-55 kDa under non-reducing (NR) condition (SDS-PAGE) due to glycosylation.
偶联（Conjugate）
FITC
Excitation source: 488 nm spectral line, argon-ion laser
Excitation Wavelength: 488 nm
Emission Wavelength: 535 nm
标记（Labeling）
The primary amines in the side chains of lysine residues and the N-terminus of the protein are conjugated with FITC using standard chemical labeling method. The residual FITC is removed by molecular sieve treatment during purification process.
蛋白标记度（Protein Ratio）
The FITC to protein molar ratio is 2-4.
内毒素（Endotoxin）
Less than 1.0 EU per μg by the LAL method.
纯度（Purity）
>90% as determined by SDS-PAGE.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
重构方法（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.
存储（Storage）
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.
电泳（SDS-PAGE）
FITC-Labeled Human CD27 Ligand, His,Flag Tag on SDS-PAGE under non-reducing (NR) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90%.
SEC-MALS
The purity of FITC-Labeled Human CD27 Ligand, His,Flag Tag (Cat. No. CDD-HF2D4) is more than 85% and the molecular weight of this protein is around 55-74 kDa verified by SEC-MALS.
Report
活性（Bioactivity）-ELISA
Immobilized Anti-CD27 Ligand Antibody, Human IgG1 at 1 μg/mL (100 μL/well) can bind FITC-Labeled Human CD27 Ligand, His,Flag Tag (Cat. No. CDD-HF2D4) with a linear range of 0.039-0.156 μg/mL (QC tested).
Protocol
Immobilized Human CD27, Fc Tag (Cat. No. CD7-H5254) at 5 μg/mL (100 μL/well) can bind FITC-Labeled Human CD27 Ligand, His,Flag Tag (Cat. No. CDD-HF2D4) with a linear range of 0.039-0.156 μg/mL (Routinely tested).
Protocol
背景（Background）
Cluster of Differentiation 70 (CD70) is also known as CD27 ligand (CD27L / CD27LG), TNFSF7, TNFSF7G, is a type II transmembrane glycoprotein belonging to the TNF superfamily (TNFSF) and is a surface antigen found on activated T-and B-lymphocytes and mature dendritic cells. Binding of CD70 to its receptor CD27 induces in priming, effector functions, differentiation and memory formation of T-cells, and thus is invloved in the biological processes including T-cell activation, the proliferation of costimulated T-cells, as well as the generation of cytolytic T-cells. CD70 on T cells provides costimulatory signals that are required for T cell proliferation, clonal expansion and the promotion of effector T cell formation. CD70 on mouse B cell has been shown to inhibit terminal differentiation of activated B cells into plasma cells and enhances commitment to memory B cell responses. CD70 induces proliferation and IFNγ production, on NK cells.
