Name : Biotinylated Human HLA-E*01:03&B2M&Peptide (VMAPRTLVL) Tetramer Protein
Product Source :
Recombinant Biotinylated Human HLA-E*01:03&B2M&Peptide (VMAPRTLVL) 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-Ile305(HLA-E*01:03), Ile21-Met119(B2M) and VMAPRTLVL peptide.[Accession | P13747(HLA-E*01:03)&P61769(B2M)&VMAPRTLVL]
Molecular 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.
Endotoxin Level :
Less than 1EU per μg by the LAL method.
Purity :
> 95% as determined by Tris-Bis PAGE> 95% as determined by HPLC
Formulation :
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Reconstitution :
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.
Storage and Stability :
-20 to -80°C for 12 months as supplied from date of receipt.-80°C for 3-6 months after reconstitution.2-8°C for 2-7 days after reconstitution.Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Product Concentration :
Tris-Bis PAGE Biotinylated Human HLA-E*01:03&B2M&Peptide (VMAPRTLVL) Tetramer on Tris-Bis PAGE under Non reducing (N) condition. The purity is greater than 95%. SEC-HPLC The purity of Biotinylated Human HLA-E*01:03&B2M&Peptide (VMAPRTLVL) Tetramer is greater than 95% as determined by SEC-HPLC. Blocking Data Serial dilutions of Anti-NKG2A Antibody were added into Biotinylated Human HLA-E*01:03&B2M&Peptide (VMAPRTLVL) Tetramer, His Tag : Human NKG2A&CD94, mFc Tag binding reactioins. The half maximal inhibitiory concentration (IC50) is 0.15μg/ml.
Background :
HLA-E is a nonclassical member of the major histocompatibility complex class I gene locus. HLA-E protein shares a high level of homology with MHC Ia classical proteins: it has similar tertiary structure, associates with β2-microglobulin, and is able to present peptides to cytotoxic lymphocytes. The main function of HLA-E under normal conditions is to present peptides derived from the leader sequences of classical HLA class I proteins, thus serving for monitoring of expression of these molecules performed by cytotoxic lymphocytes.
Synonyms :
HLAE; sHLA-E; HLAE; MHC class I antigen E; MHC HLA-E alpha-1; MHC HLA-E alpha-2.1; MHC; QA1
References & Citations :
(1) Kanevskiy L, Erokhina S, Kobyzeva P, Streltsova M, Sapozhnikov A, Kovalenko E. Dimorphism of HLA-E and its Disease Association. Int J Mol Sci. 2019 Nov 4;20(21):5496. doi: 10.3390/ijms20215496. PMID: 31690066; PMCID: PMC6862560.
Related category websites: https://www.medchemexpress.com/recombinant-proteins.html
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