HHLA2 Protein, Human, Recombinant (His), Biotinylated is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 38.4 kDa and the accession number is Q9UM44-1.
説明 | HHLA2 Protein, Human, Recombinant (His), Biotinylated is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 38.4 kDa and the accession number is Q9UM44-1. |
Species | Human |
Expression Host | HEK293 Cells |
Tag | C-His |
Accession Number | Q9UM44-1 |
別名 | B7-H7, B7H7, HHLA2, HERV-H LTR-associating 2 |
Construction | The Human HHLA2 (NP_009003.1) (Met1-Asn344) was expressed with a polyhistidine tag at the C-terminus. The purified protein was biotinylated in vitro. |
Protein Purity | > 95 % as determined by SDS-PAGE. |
分子量 | 38.4 kDa (predicted) |
Endotoxin | < 1.0 EU/μg of the protein as determined by the LAL method. |
Formulation | Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS, pH 7.4. Typically, a mixture containing 5% to 8% trehalose, mannitol, and 0.01% Tween 80 is incorporated as a protective agent before lyophilization. |
Reconstitution | A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information. |
Stability & Storage |
It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at-80℃. For reconstituted proteinsolutions, the solution can be stored at -20°c to -80'c for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots. |
Shipping |
In general, Lyophilized powders are shipping with blue ice. |
Research Background | B7H7 gene encodes a protein-ligand found on the surface of monocytes. The encoded protein is thought to regulate cell-mediated immunity by binding to a receptor on T lymphocytes and inhibiting the proliferation of these cells. Alternate splicing results in multiple transcript variants. HERV–H LTR-associating 2 (HHLA2, also called B7H7/B7-H5/B7y)has been recently discovered as the newest member of the B7 family and has 23–33% similarity in amino acid sequence with the other B7 molecules. This ligand is the only B7 family member that is found in humans but not in mice. It is constitutively expressed on the surface of human monocytes and is induced on B cells. HHLA2 binds to its putative receptor(s) on a variety of immune cells including CD4 and CD8 T cells and antigen-presenting cells. Similar to B7-H3, both a T cell coinhibitory role, as well as a costimulatory role, has been reported for this ligand.Cancer ImmunotherapyImmune CheckpointImmunotherapyTargeted Therapy |
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HHLA2 Protein, Human, Recombinant (His), Biotinylated HHLA-2 B7-H7 B7H7 HHLA 2 HHLA2 HERV-H LTR-associating 2 recombinant recombinant-proteins proteins protein