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HHLA2 Protein, Human, Recombinant (His)

Catalog No. TMPY-05016
Synonyms: HERV-H LTR-associating 2, HHLA2, B7-H7, B7H7

HHLA2 Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 38.4 kDa and the accession number is Q9UM44-1.

All products from TargetMol are for Research Use Only. Not for Human or Veterinary or Therapeutic Use.
HHLA2 Protein, Human, Recombinant (His)
Pack Size Availability Price/USD Quantity
50 μg In stock $ 255.00
100 μg 5 days $ 451.00
200 μg 5 days $ 797.00
500 μg 5 days $ 1,690.00
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Biological Description
Technical Params
Product Properties
References and Literature
Biological Information Immobilized HHLA2 Protein, Human, Recombinant (His Tag) at 2 μg/mL (100 μL/well) can bind CD28H/TMIGD2 Protein, Human, Recombinant (ECD, hFc Tag), the EC50 is 140-420 ng/mL.

Description HHLA2 Protein, Human, Recombinant (His) 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 System HEK293 Cells
Tag C-His
Accession Number Q9UM44-1
Synonyms HERV-H LTR-associating 2, HHLA2, B7-H7, B7H7
Construction The Human HHLA2 (NP_009003.1) (Met1-Asn344) was expressed with a polyhistidine tag at the C-terminus.
Protein Purity ≥ 95 % as determined by SDS-PAGE. ≥ 95 % as determined by SEC-HPLC.

Molecular Weight 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 protein solutions, 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.


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

References and Literature


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