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Human B7-H7/HHLA2 Antibody

Catalog #: AF8084 Datasheet / COA / SDS
Catalog # Availability Size / Price Qty
AF8084-100
AF8084-SP
Detection of Human B7-H7/HHLA2 by Western Blot.
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Human B7-H7/HHLA2 Antibody Summary

Species Reactivity
Human
Specificity
Detects human B7-H7/HHLA2 in direct ELISAs.
Source
Polyclonal Goat IgG
Purification
Antigen Affinity-purified
Immunogen
Human embryonic kidney cell line HEK293-derived human B7-H7/HHLA2
Met1-Asn344
Accession # Q9UM44
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Western Blot
1 µg/mL
See below
Immunocytochemistry
1-15 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Human B7-H7/HHLA2 antibody by Western Blot. View Larger

Detection of Human B7-H7/HHLA2 by Western Blot. Western blot shows lysates of HEK293T human embryonic kidny cell line transfected with human B7-H7. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human B7-H7/HHLA2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF8084) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). Specific bands were detected for B7-H7/HHLA2 at approximately 90-110 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Immunocytochemistry B7-H7/HHLA2 antibody in Human Monocytes by Immunocytochemistry (ICC). View Larger

B7-H7/HHLA2 in Human Monocytes. B7-H7/HHLA2 was detected in immersion fixed human monocytes using Goat Anti-Human B7-H7/HHLA2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF8084) at 15 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Non-adherent Cells.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Preparation and Storage

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
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Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: B7-H7/HHLA2

B7-H7, also known as HHLA2 (HERV-H LTR-associating 2), is a member of the B7 family of immune regulatory proteins (1, 2). Mature human B7-H7 consists of a 322 amino acid (aa) extracellular domain (ECD) with three immunoglobulin-like domains, a 21 aa transmembrane segment, and a 49 aa cytoplasmic domain (3-5).
B7‑H7 is constitutively expressed on monocytes and is up-regulated by LPS and IFN-gamma stimulation. It is expressed on LPS/IFN-gamma treated B cells but not on resting B cells (5). B7-H7 binds to cell surface determinants on resting and mature T cells, B cells, and monocytes as well as on immature and mature dendritic cells (5). Soluble B7-H7 inhibits the proliferation of activated CD4+ and CD8+ T cells and their production of IFN-gamma, TNF-alpha, IL-5, IL-10, IL-13, IL-17A, and IL-22 (5).

References
  1. Zou, W. and L. Chen (2008) Nat. Rev. Immunol. 8:467.
  2. Bour-Jordan, H. et al. (2011) Immunol. Rev. 241:180.
  3. Mager, D.L. et al. (1999) Genomics 59:255.
  4. Flajnik, M.M. et al. (2012) Immunogenetics 64:571.
  5. Zhao, R. et al. (2013) Proc. Natl. Acad. Sci. USA 110:9879.
Long Name
B7 Homolog 7
Entrez Gene IDs
11148 (Human); 102137704 (Cynomolgus Monkey)
Alternate Names
B7H7; B7-H7; HERV-H LTR-associating 2; HERV-H LTR-associating protein 2; HHLA2; Human endogenous retrovirus-H long terminal repeat-associating protein 2

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