Recombinant Human HLA-A*02:01&B2M&MAGE-A4 (GVYDGREHTV) Tetramer Protein, Active

Name: Recombinant Human HLA-A*02:01&B2M&MAGE-A4 (GVYDGREHTV) Tetramer Protein, Active
Brand: Beta LifeScience
SKU: BLK-01691P-100UG
Availability: InStock

Human HLA-A*02:01&B2M&MAGE-A4 (GVYDGREHTV) Tetramer on Tris-Bis PAGE under Non reducing (N) condition. The purity is greater than 95%.

Collections: Fc receptors, High-quality recombinant proteins

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Product Overview

Description	Recombinant Human HLA-A02:01&B2M&MAGE-A4 (GVYDGREHTV) Tetramer Protein is expressed from HEK293 with His tag and Avi tag at the C-Terminus, tetramer is assembled by biotinylated monomer and streptavidin.It contains Gly25-Thr305(HLA-A02:01),Ile21-Met119(B2M) and GVYDGREHTV peptide.
Purity	> 95% as determined by Tris-Bis PAGE;> 95% as determined by HPLC
Accession	A0A140T913(HLA-A*02:01)&P61769(B2M)&GVYDGREHTV
Target Symbol	HLA-A*02:01&B2M&MAGE-A4 (GVYDGREHTV) Tetramer
Synonyms	HLA0201; MHC I; MAGE-A4; CT1.4; MAGE4A; MAGE4B; MAGE-X2; member 4
Species	Human
Expression System	HEK293
Tag	C-His-Avi
Expression Range	Gly25-Thr305(HLA-A*02:01),Ile21-Met119(B2M)and GVYDGREHTV peptide
Mol. Weight	The protein has a predicted MW of 258 kDa. Due to glycosylation, the protein migrates to 260-265 kDa under Non reducing (N) condition based on Tris-Bis PAGE result.
Form	Lyophilized
Formulation	Lyophilized from 0.22um filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Endotoxin	Less than 1EU per ug by the LAL method.
Activity	Immobilized Human HLA-A02:01&B2M&MAGE-A4 (GVYDGREHTV) Tetramer, His Tag at 0.5ug/ml (100ul/Well) on the plate. Dose response curve for Anti-HLA-A02:01&B2M&MAGE-A4 (GVYDGREHTV) Antibody, hFc Tag with the EC50 of 6.1ng/ml determined by ELISA (QC Test). The affinity constant of 8.49pM as determined in SPR assay (Biacore T200). Contact us for detailed testing images.
Storage	Reconstituted protein stable at -80°C for 12 months, 4°C for 1 week. Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
Shipping	Shipped at ambient temperature.
Gene Background	Melanoma-associated antigen 4 is a protein that in humans is encoded by the MAGEA4 gene.The MAGE- A4 antigen is among the most commonly expressed cancer testis antigens. The Human HLA-A0201 MAGE-A4 (GVYDGREHTV) complex Protein is a complex of HLA-A0201 of -the MHC Class I, B2M and GVYDGREHTV peptide of -the MAGE-A4.

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.