FITC-Labeled Human Glypican 3, Fc Tag (Cat. No. GP3-HF258) is expressed from human HEK293 cells. It contains AA Gln 25 - His 559 (Accession # P51654-1). It is the FITC labeled form of Human Glypican 3, Fc Tag (Cat. No. GP3-H5258).
Predicted N-terminus: Gln 25 & Ser 359
This protein carries a human IgG1 Fc tag at the C-terminus. This protein contains a furin-like convertase cleavage site, 355-RQYR-358, and will be partially processed into N and C-terminal fragment with calculated MW of 38.1 kDa and 49.3 kDa respectively. The protein migrates as 40 kDa, 60 kDa and 87-120 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Excitation source: 488 nm spectral line, argon-ion laser
Excitation Wavelength: 488 nm
Emission Wavelength: 535 nm
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 seive treatment during purification process.
The FITC to protein molar ratio is 3-5.
Less than 1.0 EU per μg by the LAL method.
>90% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.
Contact us for customized product form or formulation.
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 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.
FITC-Labeled Human Glypican 3, 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 90%.
Immobilized Anti-Human GPC3 MAb at 10 μg/mL (100 μL/well) can bind FITC-Labeled Human Glypican 3, Fc Tag (Cat. No. GP3-HF258) with a linear range of 0.078-1.25 μg/mL (Ex.488 nm/Em.535 nm) (QC tested).
CAR阳性表达率检测（Evaluation of CAR expression ）
FACS Analysis of Anti-GPC-3 CAR Expression
293 cells were transfected with anti-GPC3-scFv and RFP tag. 2e5 of the cells were stained with B. FITC-Labeled Human Glypican 3 Protein, Fc Tag (Cat. No. GP3-HF258, 3 µg/ml) and C. FITC-labeled Protein Control. A. Non-transfected 293 cells and C. FITC-labeled Protein Control were used as negative control. RFP was used to evaluate CAR (anti-GPC3-scFv) expression and FITC was used to evaluate the binding activity of FITC-Labeled Human Glypican 3 Protein, Fc Tag (Cat. No. GP3-HF258).
Glypican-3 (GPC3) is also known as Intestinal protein OCI-5, GTR2-2, MXR7, which belongs to the glypican family. Glypican 3 / GPC-3 is highly expressed in lung, liver and kidney. Glypican-3 inhibits the dipeptidyl peptidase activity of DPP4. Glypican-3 may be involved in the suppression/modulation of growth in the predominantly mesodermal tissues and organs, and also may play a role in the modulation of IGF2 interactions with its receptor and thereby modulate its function.