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Animal-Free IFN-lambda 2/IL-28A Protein, Human (His)

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IFN-lambda 2/IL-28A protein is a multifunctional cytokine with antiviral, antitumor, and immunomodulatory activities. It plays a key role in antiviral host defense, particularly within epithelial tissues. Animal-Free IFN-lambda 2/IL-28A Protein, Human (His) is the recombinant human-derived animal-FreeIFN-lambda 2/IL-28A protein, expressed by E. coli , with C-His labeled tag. This product is for cell culture use only.

For research use only. We do not sell to patients.
  • Species: Human
  • Source: E. coli
  • Storage:
    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.
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To place orders, for customer services and technical support, please contact: MedChemExpress USA

Tel: 609-228-6898 E-mail: [email protected] [email protected]

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To place orders, for customer services and technical support, please contact:

609-228-6898
[email protected] [email protected]
Find Your Local Distributor Your local distributor: Hycultec GmbHHycultec
  • Biological Activity
  • Technical Parameters
  • Product Properties
  • Documentation
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Biological Activity

Description

IFN-lambda 2/IL-28A protein is a multifunctional cytokine with antiviral, antitumor, and immunomodulatory activities. It plays a key role in antiviral host defense, particularly within epithelial tissues. Animal-Free IFN-lambda 2/IL-28A Protein, Human (His) is the recombinant human-derived animal-FreeIFN-lambda 2/IL-28A protein, expressed by E. coli , with C-His labeled tag. This product is for cell culture use only.

Background

IFN-lambda 2/IL-28A Protein, a versatile cytokine, possesses antiviral, antitumor, and immunomodulatory activities. It assumes a pivotal role in antiviral host defense, particularly within epithelial tissues. Functioning as a ligand for the heterodimeric class II cytokine receptor comprising IL10RB and IFNLR1, its engagement activates the JAK/STAT signaling pathway, leading to the expression of IFN-stimulated genes (ISG) that establish the antiviral state. Notably, its receptor distribution is confined, primarily exerting its effects in epithelial cells due to the cell type-selective expression of the receptor IFNLR1. While not deemed essential for early virus-activated host defense in vaginal infection, it proves vital in Toll-like receptor (TLR)-induced antiviral defense. It plays a significant role in antiviral immune defense within the intestinal epithelium. Furthermore, IFN-lambda 2/IL-28A contributes to immunomodulation by up-regulating MHC class I antigen expression, enhancing its impact on immune responses.

Verified Bioactivity

Measure by its ability to protect HepG2 cells infected with encephalomyocarditis (EMC) virus. The ED50 for this effect is <20 ng/mL.

Technical Parameters

  • Species Human
  • Source E. coli
  • Tag C-6*His
  • Accession

    Q8IZJ0 (P27-V200)

  • Gene ID
    282616  [NCBI]
  • Molecular Construction
    • N-term
    • IFN-λ2 (P27-V200)
      Accession # Q8IZJ0
    • 6*His
    • C-term
  • Protein Length

    Full Length of Mature Protein

  • Synonyms

    IFNL2; Interleukin-28A; Prev. IL28A; Interleukin 28A; IL-28A; ZCYTO20; Interleukin 28A (Interferon, Lambda 2); IFNL2a; Interferon Lambda-2; IFNL3a; Cytokine Zcyto20; Interferon Lambda 2; IFN-Lambda-2

  • AA Sequence

    PVARLHGALPDARGCHIAQFKSLSPQELQAFKRAKDALEESLLLKDCRCHSRLFPRTWDLRQLQVRERPMALEAELALTLKVLEATADTDPALVDVLDQPLHTLHHILSQFRACIQPQPTAGPRTRGRLHHWLYRLQEAPKKESPGCLEASVTFNLFRLLTRDLNCVASGDLCV

  • Predicted Molecular Mass

    20.6 kDa

  • Molecular Weight

    Approximately 20 kDa, based on SDS-PAGE under reducing conditions.

  • Purity

    ≥ 95%, as determined by reducing SDS-PAGE.

Product Properties

Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.22 μm filtered solution of PBS, pH 8.0, trehalose.

Endotoxin Level

<0.1 EU per 1 μg of the protein by the LAL method.

Reconstitution

It is recommended to reconstitute to a concentration of 100-200 μg/mL in ddH2O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

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.

Shipping

Room temperature in continental US; may vary elsewhere.

Calculators

Reconstitution Calculator

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

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Dilution Calculator

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

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The Specific Activity Calculator Equation
  • Specific Activity (Unit/mg)
  • Biological Activity (ED50)

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

Specific Activity (Unit/mg) Specific Activity (Unit/mg)
Unit/mg
= 106 ÷
Biological Activity (ED50) Biological Activity (ED50)
106 ÷
ng/mL
MOQ
Minimum order quantity
100 mg

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Measured by its ability to inhibit anti-CD3-induced proliferation of stimulated CTLL-2 mouse cytotoxic T cells. The ED50 this effect is 0.8023 μg/ml, corresponding to a specific activity is 1246.42 units/mg.

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