Human Mesothelin (296-580), Fc Tag (MSN-H5253) is expressed from human 293 cells (HEK293). It contains AA Glu 296 - Gly 580 (Accession # AAH09272.1).
Predicted N-terminus: Glu 296
This protein carries a human IgG1 Fc tag at the C-terminus.
The protein has a calculated MW of 58.6 kDa. The protein migrates as 66-85 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Less than 0.1 EU per μg by the LAL method.
>95% as determined by SDS-PAGE.
>90% as determined by SEC-HPLC.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.
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Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
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 12 months under sterile conditions after reconstitution.
Human Mesothelin (296-580), Fc 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 Human Mesothelin (296-580), Fc Tag (Cat. No. MSN-H5253) was greater than 90% as determined by SEC-HPLC.
Immobilized Human Mesothelin (296-580), Fc Tag (Cat. No. MSN-H5253) at 0.5 μg/mL (100 μL/well) can bind Anti-Human MSLN Mab with a linear range of 0.1-3 ng/mL (QC tested).
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. Human Mesothelin (296-580), Fc Tag (Cat. No. MSN-H5253, 1 µg/ml) and C. Fc Tag Fusion Protein Control, followed by FITC anti-human IgG Fc. A. Non-transfected 293 cells and C. Fc Tag Fusion 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 Human Mesothelin (296-580), Fc Tag (Cat. No. MSN-H5253).
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.