IL-12 Protein, Human (Biotinylated, HEK293, His)
IL-12 beta Protein, also known as natural killer cell stimulatory factor 2, is a common subunit (p40) of IL-12 and IL-23. IL-12 is a inflammatory factor expressed by activated macrophages, and involves in Th1-type immune response against cancer. IL-12 beta Protein located outside the cell membrane, involves in singalling mediated by Jak-STAT. IL-12 beta Protein consists of 328 amino acids (M1-S328) with a fibronectin type-III domain (237-328 a.a). IL-12 beta Protein, Human (M1-S219) is a biotinylated protein, produced in HEK293 cells with a C-Terminal His-tag.
- Species: Human
- Source: HEK293
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Storage:Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.
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Biological Activity
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Technical Parameters
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Product Properties
- Documentation
- References
- Help & FAQs
Biological Activity
Description
IL-12 beta Protein, also known as natural killer cell stimulatory factor 2, is a common subunit (p40) of IL-12 and IL-23. IL-12 is a inflammatory factor expressed by activated macrophages, and involves in Th1-type immune response against cancer[1]. IL-12 beta Protein located outside the cell membrane, involves in singalling mediated by Jak-STAT[3]. IL-12 beta Protein consists of 328 amino acids (M1-S328) with a fibronectin type-III domain (237-328 a.a). IL-12 beta Protein, Human (M1-S219) is a biotinylated protein, produced in HEK293 cells with a C-Terminal His-tag.
Background
IL-12 beta Protein, as known as IL12 p40 subunit or IL-12B, heterodimerizes with the IL-12 p35 subunit (IL-12A) to form IL-12 and with the IL23 p19 subunit to form IL-23, exerting different regulating functions[1].
IL-12 and IL23 belong to IL-12 family, are involved in proinflammatory responses and expressed by activated macrophages that serve as an essential inducer of Th1 cells development[2].
IL-12 signals via IL-12Rβ1 and IL-12Rβ2 mediated by p-STAT4, whereas IL-23 signals via IL-12Rβ1 and IL-23R mediated by p-STAT1 and p-STAT3[3].
The sequence of amino acids in IL-12 beta proteins of human is very different from mouse (69.04%) and rat (69.04%).
Interleukin 12 (IL-12) family have been known to be inflammatory factors, induce autoimmune inflammation and thus may be responsible for autoimmune inflammatory diseases and may be important for tumorigenesis[4].
Technical Parameters
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Species Human
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Source HEK293
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Tag C-His
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Accession
P29459 (R23-S219)&P29460 (I23-S328)
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Conjugation
Biotin
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Conjugate Method
The biotin is covalently conjugated to the primary amine groups of the protein using chemical labeling methods.
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Synonyms
IL12A; Cytotoxic Lymphocyte Maturation Factor 1, P35; Prev. NKSF1; NK Cell Stimulatory Factor Chain 1; IL-12A; Interleukin-12 Alpha Chain; Interleukin-12 Subunit Alpha; Interleukin 12, P35; CLMF; IL-12, Subunit P35; NFSK; IL35 Subunit; P35; CLMF P35; Inte
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Predicted Molecular Mass
60.1 kDa
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Glycosylation
Yes
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Purity
≥ 95%, as determined by reducing SDS-PAGE.
Product Properties
Solution
<1 EU/μg, determined by LAL method.
Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.
Shipping with dry ice.
Documentation
References
[1]. Ivy M Dambuza, et al. IL-12p35 induces expansion of IL-10 and IL-35-expressing regulatory B cells and ameliorates autoimmune disease. Nat Commun. 2017 Sep 28;8(1):719. [Content Brief]
[2]. Lu X. Impact of IL-12 in Cancer. Curr Cancer Drug Targets. 2017;17(8):682-697. [Content Brief]
[3]. Jin Kyeong Choi, et al. IL-12p35 Inhibits Neuroinflammation and Ameliorates Autoimmune Encephalomyelitis. Front Immunol. 2017 Oct 5;8:1258. [Content Brief]
[4]. Gunsten S, et al. IL-12 p80-dependent macrophage recruitment primes the host for increased survival following a lethal respiratory viral infection. Immunology. 2009 Apr;126(4):500-13. [Content Brief]
[5]. D De Wit, et al. Helper T-cell responses elicited by Der p 1-pulsed dendritic cells and recombinant IL-12 in atopic and healthy subjects. J Allergy Clin Immunol. 2000 Feb;105(2 Pt 1):346-52. [Content Brief]
[6]. Gotthardt D, Trifinopoulos J, Sexl V, Putz EM. JAK/STAT Cytokine Signaling at the Crossroad of NK Cell Development and Maturation. Front Immunol. 2019 Nov 12;10:2590. [Content Brief]
[7]. Tait Wojno ED, Hunter CA, Stumhofer JS. The Immunobiology of the Interleukin-12 Family: Room for Discovery. Immunity. 2019 Apr 16;50(4):851-870. [Content Brief]
[8]. Becker-Hapak MK, et al. A Fusion Protein Complex that Combines IL-12, IL-15, and IL-18 Signaling to Induce Memory-Like NK Cells for Cancer Immunotherapy. Cancer Immunol Res. 2021 Sep;9(9):1071-1087. [Content Brief]
[9]. Krämer B, et al. Do lambda-IFNs IL28A and IL28B act on human natural killer cells? Proc Natl Acad Sci U S A. 2011 Aug 23;108(34):E519-20; author reply E521-2. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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