Biotinylated Human HLA-A*02:01&B2M&PRAME (ALYVDSLFFL) Complex Protein (Monomer, MALS verified)

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Synonyms

HLA-A*0201 & B2M & PRAME (ALYVDSLFFL)

Source

Biotinylated Human HLA-A*02:01&B2M&PRAME (ALYVDSLFFL) Complex Protein (HLE-H82E6) is expressed from human 293 cells (HEK293). It contains AA Gly 25 - Ile 308 (HLA-A*02:01) & Ile 21 - Met 119 (B2M) & ALYVDSLFFL peptide (Accession # AAA59606.1 (HLA-A*02:01) & P61769-1 (B2M) & ALYVDSLFFL).

Predicted N-terminus: Gly 25 & Ile 21

Molecular Characterization

Biotinylated Human HLA-A*02:01&B2M&PRAME (ALYVDSLFFL) Complex Protein is produced by co-expression of HLA and B2M loaded with PRAME peptide.

This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™).

The protein has a calculated MW of 36.3 kDa and 11.7 kDa. The protein migrates as 40-43 kDa and 10 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.

Labeling

Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

Purity

>90% as determined by SDS-PAGE.

>95% as determined by SEC-MALS.

Formulation

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

Contact us for customized product form or formulation.

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.

Shipping and Storage

This product is shipped at ambient temperature.

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.

Background

PRAME (Preferentially Expressed Antigen in Melanoma) is a well-characterized member of the cancer/testis antigen family. Functioning as a nuclear receptor and transcriptional regulator, PRAME negatively modulates retinoic acid signaling, thereby regulating tumor cell differentiation and proliferation. It is aberrantly overexpressed in a variety of malignancies, especially cutaneous melanoma, and its upregulation is closely linked to aggressive tumor phenotypes. Given its tumor-specific expression and oncogenic role, PRAME has emerged as a promising diagnostic biomarker, prognostic indicator, and attractive therapeutic target for tumor immunotherapy.