B7-H4 Protein, Human (Biotinylated, HEK293, His-Avi)

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Based on 1 Customer Validation

The B7-H4 protein acts as a negative regulator, inhibiting T cell-mediated immune responses, including activation, proliferation, cytokine production, and cytotoxicity. When expressed on tumor macrophages, it cooperates with regulatory T cells to suppress tumor-associated antigen-specific T cell immunity. B7-H4 Protein, Human (Biotinylated, HEK293, His-Avi) is the recombinant human-derived B7-H4 protein, expressed by HEK293 , with C-Avi, C-His labeled tag.

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  • Species: Human
  • Source: HEK293
  • 保管条件:
    Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
  • 生物活性
  • Technical Parameters
  • Product Properties
  • ドキュメント
  • Help & FAQs

生物活性

製品説明

The B7-H4 protein acts as a negative regulator, inhibiting T cell-mediated immune responses, including activation, proliferation, cytokine production, and cytotoxicity. When expressed on tumor macrophages, it cooperates with regulatory T cells to suppress tumor-associated antigen-specific T cell immunity. B7-H4 Protein, Human (Biotinylated, HEK293, His-Avi) is the recombinant human-derived B7-H4 protein, expressed by HEK293 , with C-Avi, C-His labeled tag.

Background

B7-H4 protein functions as a negative regulator of the T-cell-mediated immune response, exerting inhibitory effects on T-cell activation, proliferation, cytokine production, and the development of cytotoxicity. Particularly significant when expressed on the cell surface of tumor macrophages, B7-H4, in collaboration with regulatory T-cells (Treg), plays a crucial role in suppressing tumor-associated antigen-specific T-cell immunity. Additionally, B7-H4 is implicated in the promotion of epithelial cell transformation, indicating its multifaceted involvement in modulating immune responses and cellular processes associated with tumor development.

Verified Bioactivity

1. Measured by its binding ability in a functional ELISA. When immobilized Anti-B7-H4 Antibody at 1μg/ml (100μl/well), can bind Biotinylated Human B7-H4, His Tag and the EC50 is < 65 ng/mL.
2. Loaded Puxitatug (HY-P990059) on AHC2 biosensor, can bind B7-H4 Protein, Human (Biotinylated, HEK293, His-Avi) with an affinity constant of 4.217E-09 M as determined in BLI assay.
3. Loaded Emiltatug (HY-P990918) on AHC2 biosensor, can bind B7-H4 Protein, Human (Biotinylated, HEK293, His-Avi) with an affinity constant of 8.115E-09 M as determined in BLI assay.

Results
  • Experimental Validation Results for B7-H4 Protein, Human (Biotinylated, HEK293, His-Avi)
    Loaded Puxitatug (HY-P990059) on AHC2 biosensor, can bind B7-H4 Protein, Human (Biotinylated, HEK293, His-Avi) with an affinity constant of 4.217E-09 M as determined in BLI assay.
  • Experimental Validation Results for B7-H4 Protein, Human (Biotinylated, HEK293, His-Avi)
    Loaded Emiltatug (HY-P990918) on AHC2 biosensor, can bind B7-H4 Protein, Human (Biotinylated, HEK293, His-Avi) with an affinity constant of 8.115E-09 M as determined in BLI assay.

Technical Parameters

  • Species Human
  • Source HEK293
  • Tag C-Avi;C-8*His
  • アクセッション番号
  • 遺伝子ID
  • Molecular Construction
    • N-term
    • B7-H4 (F29-A258)
      Accession # Q7Z7D3-1
    • 8*His-Avi
    • C-term
  • Protein Length

    Extracellular Domain

  • 別名

    B7H4; B7-H4; B7S1; B7h.5; B7x; FLJ22418; VTCN1; PRO1291

  • AA Sequence

    FGISGRHSITVTTVASAGNIGEDGILSCTFEPDIKLSDIVIQWLKEGVLGLVHEFKEGKDELSEQDEMFRGRTAVFADQVIVGNASLRLKNVQLTDAGTYKCYIITSKGKGNANLEYKTGAFSMPEVNVDYNASSETLRCEAPRWFPQPTVVWASQVDQGANFSEVSNTSFELNSENVTMKVVSVLYNVTINNTYSCMIENDIAKATGDIKVTESEIKRRSHLQLLNSKA

  • Predicted Molecular Mass

    28.2 kDa

  • 分子量

    Approximately 60-70 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.

  • Glycosylation

    Yes

  • 純度

    ≥ 95%, as determined by Bis-Tris PAGE.

Product Properties

性状

Lyophilized powder.

Formulation

Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4, 5% trehalose.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.

Storage & Stability

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

輸送条件

Room temperature in continental US; may vary elsewhere.

Calculators

再構成計算機

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial)
=
Mass (in vial)
÷
Desired Reconstitution Concentration
希釈計算機

濃度 (開始) × 体積 (開始) = 濃度 (終了) × 体積 (終了)

濃度 (開始)
×
体積 (開始)
=
濃度 (終了)
×
体積 (終了)
比活性計算機
  • Specific Activity (Unit/mg)
  • Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg)
Unit/mg
= 106 ÷
Biological Activity (ED50)
106 ÷
ng/mL