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  6. IL-6R Protein, Rat (HEK293, His)

IL-6R Protein, Rat (HEK293, His)

Cat. No.: HY-P73224
COA Handling Instructions

IL-6R alpha is a subunit alpha of IL-6 receptors, also shared by other interleukin receptors. IL-6R alpha acts as IL-6 agonist and involves in JAK/STAT, MAPK, and Akt signaling pathway. IL-6R alpha, Rat consists of 462 amino acids (M1-R462) with a fibronectin type-III-like domain contained in the N-terminal part (215-313 a.a) and a transmembrane domain (365-385 a.a). Soluble IL-6R (sIL-6R) interacts with SORL1 to conduct internalization and binds IL-6 and dimerized gp130 to deliver trans signalin. IL-6R alpha, Rat (I44-E357) is soluble form and produced in HEK293 cells with a C-Terminal His-tag.

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

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  • Biological Activity

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Description

IL-6R alpha is a subunit alpha of IL-6 receptors, also shared by other interleukin receptors. IL-6R alpha acts as IL-6 agonist and involves in JAK/STAT, MAPK, and Akt signaling pathway[1][2]. IL-6R alpha, Rat consists of 462 amino acids (M1-R462) with a fibronectin type-III-like domain contained in the N-terminal part (215-313 a.a) and a transmembrane domain (365-385 a.a). Soluble IL-6R (sIL-6R) interacts with SORL1 to conduct internalization and binds IL-6 and dimerized gp130 to deliver trans signalin. IL-6R alpha, Rat (I44-E357) is soluble form and produced in HEK293 cells with a C-Terminal His-tag.

Background

IL-6 acts as both inflammatory factor and anti-inflammatory factor, fuels cancer progression through activating a series of downstream signalling cascade including gp130 (dimers), JAK/STAT, MAPK, and Akt[1][2].
IL-6R alpha (IL-6Rα) as a part of the receptor for interleukin 6, is a type I transmembrane glycoprotein, which forms a complex with the type I transmembrane signal transducer Glycoprotein 130 (CD130) and regulates the biological activity of IL-6 with a low affinity[3].
The sequence of amino acids in IL-6R alpha proteins of rat is very different from human (54.68%), but shows high similarity with mouse (89.3%).
IL-6R alpha has 2 isoform including mIL6R (the longer one) or sIL6R (the shorter one):
The mIL6R is membrane-bound interleukin-6 receptor, has the potential to drive naive CD4+ T cells to the Th17 lineage, through 'cluster signaling' by dendritic cells[4].
The sIL-6R is soluble interleukin-6 receptor subunit, cleaved from IL-6R alpha (IL-6Rα) in activated CD4+ T cells by proteolysis, and serves as IL-6 agonist. sIL-6R binds membrane-bound IL6R and subunit IL6ST to activate regenerative and anti-inflammatory signal via IL-6 trans signaling and promotes pro-inflammatory properties of IL-6. The hydrolysis of IL-6R alpha is also called ectodomain shedding[1].
IL-6R alpha involves in regulating cell growth and differentiation, and plays an important role in regulation of immune response, acute-phase reactions and hematopoiesis[5].
However, IL-6R alpha shows tissue expression specificity in liver and some cells of the immune system, thus results a limitation of IL6 signaling[6].
It's worth noting that IL-6R alpha dysregulation is implicated in the pathogenesis of many diseases, such as multiple myeloma, autoimmune diseases, and prostate cancer[7][8].

In Vitro

IL-6R alpha (sIL-6R) (1 ng/mL; 24 h) induces MMP-2 activity in rheumatoid arthritis (RA) synovial fibroblasts further 2-fold, which is involved in joint destruction in rheumatoid arthritis (RA) rats[1].
IL-6R alpha (sIL-6R) (125 ng/mL; 2-48 h) increases the mRNA level of IL-6 in primary rat osteoblasts (Ob cells), and also stimulates IL-6 xogenous added to increase the level of IL-6 mRNA in cells[2].

Biological Activity

Measured by its binding ability in a functional ELISA. When Human IL-6 is immobilized at 0.25 µg/mL (100 µL/ well) can bind Biotinylated Recombinant Rat IL-6R alpha. The ED50 for this effect is 1.077 μg/mL.

Species

Rat

Source

HEK293

Tag

C-His

Accession

NP_058716.2 (L20-P364)

Gene ID
Molecular Construction
N-term
IL-6R (L20-P364)
Accession # NP_058716.2
His
C-term
Synonyms
Interleukin-6 receptor subunit alpha; IL-6R-alpha; IL-6R 1; gp80; CD126
AA Sequence

LVLGSCRALEVANGTVTSLPGATVTLICPGKEAAGNATIHWVYSGSQSREWTTTGNTLVLRAVQVNDTGHYLCFLDDHLVGTVPLLVDVPPEEPKLSCFRKNPLVNAFCEWHPSSTPSPTTKAVMFAKKINTTNGKSDFQVPCQYSQQLKSFSCEVEILEGDKVYHIVSLCVANSVGSRSSHNVVFQSLKMVQPDPPANLVVSAIPGRPRWLKVSWQDPESWDPSYYLLQFELRYRPVWSKTFTVWPLQVAQHQCVIHDALRGVKHVVQVRGKEEFDIGQWSKWSPEVTGTPWLAEPRTTPAGIPGNPTQVSVEDYDNHEDQYGSSTEATSVLAPVQGSSPIPLP

Molecular Weight

Approximately 50-70 kDa

Purity

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

Appearance

Lyophilized powder

Formulation

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization.

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. 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

IL-6R Protein, Rat (HEK293, His) Related Classifications

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

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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

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IL-6R Protein, Rat (HEK293, His)
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HY-P73224
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