1. Recombinant Proteins
  2. Cytokines and Growth Factors
  3. Interleukin & Receptors Neurotrophic Factors
  4. IL-1
  5. IL-1 beta
  6. IL-1 beta Protein, Rat

IL-1 beta Protein, Rat

Cat. No.: HY-P7097
COA Handling Instructions

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 consists of 152 amino acids (V117-S268) and is expressed in E. coli.

For research use only. We do not sell to patients.

Protein Expression Service

Size Price Stock Quantity
Free Sample   Apply now
2 μg $35 In-stock
10 μg $85 In-stock
50 μg $235 In-stock
100 μg $400 In-stock
> 100 μg   Get quote  

* Please select Quantity before adding items.

Top Publications Citing Use of Products
  • Biological Activity

  • Technical Parameters

  • Properties

  • Documentation

  • References

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 consists of 152 amino acids (V117-S268) and is expressed in E. coli.

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, 10 and 100 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 0, 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].

Biological Activity

1.The ED50 is <10 pg/mL as measured by mouse D10S cells, corresponding to a specific activity of >1.0 × 108 units/mg.
2.Measured in a cell proliferation assay using CTLL-2 mouse T lymphocyte. The ED50 for this effect is 7.721 ng/mL, corresponding to a specific activity is 1.30×105 U/mg.

  • Measured in a cell proliferation assay using CTLL-2 mouse T lymphocyte. The ED50 for this effect is 7.721 ng/mL, corresponding to a specific activity is 1.30×105 U/mg.
Species

Rat

Source

E. coli

Tag

Tag Free

Accession

Q63264 (V117-S268)

Gene ID
Molecular Construction
N-term
IL-1β (V117-S268)
Accession # Q63264
C-term
Synonyms
rRtIL-1β; Catabolin; IL1F2; IL-1 beta; IL1B
AA Sequence

VPIRQLHCRLRDEQQKCLVLSDPCELKALHLNGQNISQQVVFSMSFVQGETSNDKIPVALGLKGLNLYLSCVMKDGTPTLQLESVDPKQYPKKKMEKRFVFNKIEVKTKVEFESAQFPNWYISTSQAEHRPVFLGNSNGRDIVDFTMEPVSS

Molecular Weight

Approximately 17.3 kDa

Purity
  • Greater than 95% as determined by reducing SDS-PAGE.
Appearance

Lyophilized powder.

Formulation

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

Endotoxin Level

<0.2 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in PBS, pH 7.4. 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. 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.

Documentation
References
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

  • Reconstitution Calculator

  • Dilution Calculator

  • Specific Activity Calculator

The reconstitution calculator equation

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

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

The dilution calculator equation

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

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

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

Your Recently Viewed Products:

Inquiry Online

Your information is safe with us. * Required Fields.

Product Name

 

Salutation

Applicant Name *

 

Email Address *

Phone Number *

 

Organization Name *

Department *

 

Requested quantity *

Country or Region *

     

Remarks

Bulk Inquiry

Inquiry Information

Product Name:
IL-1 beta Protein, Rat
Cat. No.:
HY-P7097
Quantity:
MCE Japan Authorized Agent: