膜杰作
Star Staining
Aneuro
ComboX
ActiveMax
GENPower
ClinMax
Star Ribbon
分子别名（Synonym）
MSLN,Mesothelin,MPF
表达区间及表达系统（Source）
Biotinylated Human Mesothelin (296-580) Protein, Fc Tag, primary amine labeling (MSN-H826x) is expressed from human 293 cells (HEK293). It contains AA Glu 296 - Gly 580 (Accession # AAH09272 ).
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蛋白结构（Molecular Characterization）
This protein carries a human IgG1 Fc tag at the N-terminus
The protein has a calculated MW of 59.1 kDa. The protein migrates as 60-68 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
标记（Labeling）
The primary amines in the side chains of lysine residues and the N-terminus of the protein are conjugated with biotins using standard chemical labeling method. A standard biotin reagent (13.5 angstroms) is used in this product.
蛋白标记度（Protein Ratio）
Passed as determined by the HABA assay / binding ELISA.
内毒素（Endotoxin）
Less than 1.0 EU per μg by the LAL method.
纯度（Purity）
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
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 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）
Biotinylated Human Mesothelin (296-580) Protein, Fc Tag, primary amine labeling on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.
SEC-MALS
The purity of Biotinylated Human Mesothelin (296-580) Protein, Fc Tag, primary amine labeling (Cat. No. MSN-H826x) is more than 90% and the molecular weight of this protein is around 125-153 kDa verified by SEC-MALS.
Report
活性（Bioactivity）-ELISA
Immobilized Anti-Human MSLN Mab at 0.5 μg/mL (100 μL/well) can bind Biotinylated Human Mesothelin (296-580) Protein, Fc Tag, primary amine labeling (Cat. No. MSN-H826x) with a linear range of 0.5-8 ng/mL (QC tested).
Protocol
CAR阳性表达率检测（Evaluation of CAR expression）
FACS Analysis of Anti-MSLN CAR Expression
293 cells were transfected with anti-MSLN-scFv and RFP tag. 2e5 of the cells were first stained with B. Biotinylated Human Mesothelin (296-580) Protein, Fc Tag, primary amine labeling (Cat. No. MSN-H826x, 3 µg/ml) and C. Biotinylated Protein Control, followed by FITC Streptavidin. A. Non-transfected 293 cells and C. Biotinylated Protein Control were used as negative control. RFP was used to evaluate CAR (anti-MSLN-scFv) expression and FITC was used to evaluate the binding activity of Biotinylated Human Mesothelin (296-580) Protein, Fc Tag, primary amine labeling (Cat. No. MSN-H826x).
Protocol
背景（Background）
Mesothelin (MSLN) is also known as CAK1 antigen, Pre-pro-megakaryocyte-potentiating factor, which belongs to the mesothelin family. Mesothelin / MSLN can be proteolytically cleaved into the following two chains by a furin-like convertase: Megakaryocyte-potentiating factor (MPF) and the cleaved form of mesothelin. Both MPF and the cleaved form of mesothelin are N-glycosylated. Mesothelin / MSLN can interacts with MUC16. The membrane-anchored forms of MSLN may play a role in cellular adhesion. MPF potentiates megakaryocyte colony formation in vitro.
