Recombinant Human HERV-H LTR-associating protein 2(HHLA2)

Code CSB-CF891555HU
Size Pls inquire
Source in vitro E.coli expression system
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Product Details

Target Names HHLA2
Uniprot No. Q9UM44
Alternative Names B7H7; HERV H LTR associating 2; HERV-H LTR-associating protein 2; HHLA 2; HHLA2; HHLA2_HUMAN; Human endogenous retrovirus H long terminal repeat associating protein 2; Human endogenous retrovirus-H long terminal repeat-associating protein 2
Species Homo sapiens (Human)
Expression Region 23-414
Protein Length Full Length of Mature Protein
Tag Info The following tags are available.
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form Lyophilized powder
Buffer before Lyophilization Tris/PBS-based buffer, 6% Trehalose, pH 8.0
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
and FAQs
Protein FAQs
Storage Condition Store at -20°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet Please contact us to get it.

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Target Data

Function Through interaction with TMIGD2, costimulates T-cells in the context of TCR-mediated activation. Enhances T-cell proliferation and cytokine production via an AKT-dependent signaling cascade.
Gene References into Functions
  1. HHLA2 protein expression was evaluated in primary tumor specimens and metastatic disease using an osteosarcoma tumor microarray. HHLA2 was expressed in almost all metastatic disease specimens and was more prevalent than in primary specimens without known metastases. PMID: 27531281
  2. HHLA2 was not detected in most of normal lung tissue but expressed in 66% of NSCLC across different subtypes. In particular, EGFR-mutated NSCLC was significantly associated with higher tumor HHLA2 expression in both discovery and validation lung cancer cohorts. HHLA2 is widely expressed in NSCLC and is associated with EGFR mutation and high TILs in lung adenocarcinoma. PMID: 27553831
  3. Low B7-H5 expression is associated with pancreatic adenocarcinomas. PMID: 25519928
  4. The HHLA2 pathway represents a novel immunosuppressive mechanism within the tumor microenvironment. PMID: 25549724
  5. B7 homologue 5 (B7-H5), was identified as a specific ligand for CD28H PMID: 23784006
  6. Data indicate that HHLA2 protein was predominantly found on cell membranes with some in the cytoplasm. PMID: 23716685

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Subcellular Location Membrane, Single-pass type I membrane protein
Tissue Specificity Expressed at high levels in colon, kidney, testis, lung and pancreas, and at lower levels in small intestine, liver and skeletal muscle. In immune cells, highly expressed in B-cells, dendritic cells and macrophages. Not detected in T-cells.
Database Links

HGNC: 4905

OMIM: 604371

KEGG: hsa:11148

STRING: 9606.ENSP00000350402

UniGene: Hs.225968


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