IL-1 beta Protein, Rat (268a.a, His)
Based on 5 publication(s) in Google Scholar
IL-1 beta is a potent proinflammatory cytokine expressed by monocytes, macrophages, and dendritic cells. IL-1 beta plays a key role in inflammation and immunologic reactions. IL-1 beta Protein, Rat (268a.a, His) is produced in E. coli with a N-Terminal His-tag. It consists of 268 amino acids (M1-S268).
- Species: Rat
- Source: E. coli
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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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Biological Activity
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Technical Parameters
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Product Properties
- Documentation
- References
- Help & FAQs
Biological Activity
Description
IL-1 beta is a potent proinflammatory cytokine expressed by monocytes, macrophages, and dendritic cells. IL-1 beta plays a key role in inflammation and immunologic reactions[1][2]. IL-1 beta Protein, Rat (268a.a, His) is produced in E. coli with a N-Terminal His-tag. It consists of 268 amino acids (M1-S268).
Background
Interleukin-1β (IL-1β) is one of the pro-inflammatory cytokines and is produced and secreted by a variety of cell types although the vast majority of studies have focussed on its production within cells of the innate immune system, such as monocytes and macrophages[1][2].
IL-1β is produced as inactive pro-IL-1β (encoded by pro-Il-1b) in response to inflammatory stimuli, including both microbial products and endogenous danger-associated molecules. IL-1β gene expression and synthesis of pro-IL-1β occurs after activation of pattern recognition receptors (PRRs). Inflammatory stimuli also drive activation of cytosolic CARD and PYHIN domain-containing PRRs that recruit ASC and caspase-1 (Casp-1) to assemble into the multiprotein complex inflammasome. Pro-Casp-1 (encoded by pro-Casp-1), activated by the inflammasome, cleaves pro-IL-1β into the bioactive IL-1β. IL-1β acts in an autocrine/paracrine manner via the type I IL-1 receptor (IL-1R1)[1][2][3].
IL-1β could regulate the inflammatory response, and is involved in a variety of cellular activities, including cell proliferation, differentiation, and apoptosis. IL-1β also plays a significant regulator of reproduction in females[1][2][3].
In Vitro
IL-1β (1-15625 pg/mL; 12 hours) dose-dependently increases production of the NF-κB-dependent inflammatory cytokine TNF-α, and a significant effect of IL-1β is observed at concentrations as low as 5 pg/mL in immortalized murine RAW264.7 macrophages[1].
IL-1β (1, 1 and 1 ng/mL; 24 hours) results in a dose-dependent increase of cell proliferation in pig heart cells. IL-1β increases the gene expression of caspase-3, and increases the enzymatic activities of MMP-2 and MMP-9[2].
In Vivo
IL-1β (8 ng; i.p.; daily; for 3 days) rescues Casp1−/− mice, restores survival and reduces lung bacterial load (i.e. days , 1, and 2 post-infection) in Chlamydia pneumoniae infected Casp1−/− mice. Yet, mice treated later (days 2, 3 and 4 post-infection) shows significantly increased bacterial counts relative to early-treated mice[3].
MCE Validation Data
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Purity - SDS-PAGE
Purity - SDS-PAGE
Publications (5)
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Journal Impact Factor
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Most Recent
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Int J Biol Macromol
Light-crosslinked gelatin methacrylate hydrogel prevents intervertebral disc degeneration by delivering 10-hydroxy-2-decenoic acid to inhibit ferroptosis via NF-κB signaling. [Abstract]2025 Oct 21;331(Pt 2):148454. PMID: 41130468 -
Mol Med
2023 Jul 3;29(1):86. PMID: 37400752 -
Naunyn Schmiedebergs Arch Pharmacol
Amentoflavone alleviated cartilage injury and inflammatory response of knee osteoarthritis through PTGS2. [Abstract]2024 Nov;397(11):8903-8916. PMID: 38856914 -
Tissue Cell
MSC-derived exosomes promote chondrocyte proliferation and inhibit apoptosis by suppressing inflammation in osteoarthritis. [Abstract]2026 Feb:98:103157. PMID: 41027248 -
Technical Parameters
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Species Rat
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Source E. coli
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Tag N-10*His
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Accession
Q63264 (M1-S268)
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Molecular Construction
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N-term
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10*His
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IL-1β (M1-S268)
Accession # Q63264 -
C-term
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Protein Length
Full Length
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Synonyms
IL1B; IL-1B; Interleukin 1 Beta; Multifunctional Fusion Protein; IL1F2; Pro-Interleukin-1-Beta; Interleukin-1 Beta; Preinterleukin 1 Beta; IL1-BETA; Interleukin 1beta; IL-1 Beta; IL1beta; Catabolin; IL-1
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AA Sequence
MATVPELNCEIAAFDSEENDLFFEADRPQKIKDCFQALDLGCPDESIQLQISQQHLDKSFRKAVSLIVAVEKLWQLPMSCPWSFQDEDPSTFFSFIFEEEPVLCDSWDDDDLLVCDVPIRQLHCRLRDEQQKCLVLSDPCELKALHLNGQNISQQVVFSMSFVQGETSNDKIPVALGLKGLNLYLSCVMKDGTPTLQLESVDPKQYPKKKMEKRFVFNKIEVKTKVEFESAQFPNWYISTSQAEHRPVFLGNSNGRDIVDFTMEPVSS
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Predicted Molecular Mass
32.1 kDa
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Molecular Weight
Approximately 35 kDa, based on SDS-PAGE under reducing conditions.
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Purity
≥ 90%, as determined by reducing SDS-PAGE.
Product Properties
Lyophilized powder
1.Lyophilized from a 0.22 μm filtered solution of 50 mM Tris, 500 mM NaCl, pH 8.0, 5% trehalose, 5% mannitol and 0.01% Tween 80.
2.Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4, 8% trehalose.
Please refer to the lot-specific COA for specific buffer information.
Note: For SPR assay, please replace the buffer. Primary amine components (e.g., Tris, imidazole) can affect protein-coupled chips.
<1 EU/μg, determined by LAL method.
It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.
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.
Room temperature in continental US; may vary elsewhere.
Documentation
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Data Sheet (264 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Jan Petrasek, et al. IL-1 receptor antagonist ameliorates inflammasome-dependent alcoholic steatohepatitis in mice. J Clin Invest. 2012 Oct;122(10):3476-89. [Content Brief]
[2]. Karina Zitta, et al. Interleukin-1beta regulates cell proliferation and activity of extracellular matrix remodelling enzymes in cultured primary pig heart cells. Biochem Biophys Res Commun. 2010 Sep 3;399(4):542-7. [Content Brief]
[3]. Kenichi Shimada, et al. Caspase-1 dependent IL-1β secretion is critical for host defense in a mouse model of Chlamydia pneumoniae lung infection. PLoS One. 2011;6(6):e21477. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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