Biotinylated Human HLA-DRA1*01:01&HLA-DRB1*04:01 Monomer Protein (Peptide free, MALS verified)

Synonyms

HLA-DRA1*0101 & HLA-DRB1*0401

Source

Biotinylated Human HLA-DRA1*01:01&HLA-DRB1*04:01 Monomer Protein (HL1-H82E5) is expressed from human 293 cells (HEK293). It contains AA Ile 26 - Glu 216 (HLA-DRA1*01:01) & Gly 30 - Lys 227 (HLA-DRB1*04:01) (Accession # CAI2388006.1 (HLA-DRA1*01:01) & CAI9239961.1 (HLA-DRB1*04:01)).

Predicted N-terminus: Ile 26 & Gly 30

Molecular Characterization

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

The protein has a calculated MW of 29.2 kDa and 28.8 kDa. The protein migrates as 35-40 kDa and 30-33 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.

Protein Ratio

Passed as determined by the HABA assay / binding ELISA.

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.

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:

1. -20°C to -70°C for 12 months in lyophilized state;
2. -70°C for 3 months under sterile conditions after reconstitution.

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