SKU: 21727219696

IL-2R alpha/CD25 Fc Chimera Protein, Human

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Description

IL-2R alpha/CD25 Fc Chimera Protein, HumanProduct Specification Species Human Synonyms IL 2R alpha, CD25, IL2RA, p55, IL2 RA, IL 2 RA Accession P01589 Amino Acid Sequence Glu22 Cys213, with C terminal Human IgG1 Fc Expression System HEK293 Molecular Weight 55 72kDa Purity >95% by SDS PAGE Endotoxin <0. 1EU g Conjugation Unconjugated Tag Human Fc Tag Physical Appearance Lyophilized Powder Storage Buffer PBS, pH7. 4 Reconstitution Reconstitute at 0. 1 1 mg ml according to the size in ultrapure

Product Specification


Species Human
Synonyms IL-2R alpha, CD25, IL2RA, p55, IL2-RA, IL-2-RA
Accession P01589
Amino Acid Sequence

Glu22-Cys213, with C-terminal Human IgG1 Fc

Expression System HEK293
Molecular Weight

55-72kDa

Purity >95% by SDS-PAGE
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Tag Human Fc Tag
Physical Appearance Lyophilized Powder
Storage Buffer

PBS, pH7.4

Reconstitution

Reconstitute at 0.1-1 mg/ml according to the size in ultrapure water after rapid centrifugation.

Stability & Storage

· 12 months from date of receipt, lyophilized powder stored at -20 to -80℃.

· 3 months, -20 to -80℃ under sterile conditions after reconstitution.

· 1 week, 2 to 8℃ under sterile conditions after reconstitution.

· Please avoid repeated freeze-thaw cycles.

Reference

1、Nelson B H. et al. (1998) Biology of the interleukin-2 receptor. Adv Immunol. 70: 1-81.

2、Schorle H. et al. (1991) Development and function of T cells in mice rendered interleukin-2 deficient by gene targeting. Nature. 352: 621-624.

3、Willerford D M. et al. (1995) Interleukin-2 receptor alpha chain regulates the size and content of the peripheral lymphoid compartment. Immunity. 3: 521-530.

Background

Interleukin-2 receptor subunit alpha (IL2RA) is also known as IL-2R subunit alpha, IL-2-RA, IL2-RA, TAC antigen, p55, CD antigen CD25, is a type I transmembrane glycoprotein. The interaction of interleukin-2 (IL-2) with its receptor (IL-2R) critically regulates the T-cell immune response, and the α chain CD25/IL-2Rα is required for the formation of the high-affinity receptor. Among them, IL-2 plays a major role in the regulation of the magnitude and duration of T-cell activation in the immune responses. IL-2 promotes T-cell proliferation by interacting with its high-affinity receptor composed of three transmembrane polypeptides, the α, β, and γc chains. The α chain (CD25) is induced during T-cell activation, and its association with β and γc chains constitutes the high-affinity receptor. Most of the biologic effects of IL-2 are mediated through the high-affinity complex as evidenced by the almost identical phenotype of mice with targeted inactivation of the genes for IL-2 and IL-2Rα.

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SKU: 21727219696

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Tina
Fort Morgan, US
★★★★★ 5
Perfect paper towel holder
Color: Black
Easy to put together, very nice looking.
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Reviewed in the United States on May 12, 2026
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Ayiana-Monét
Waukegan, US
★★★★★ 4
Budget friendly and useful!
Color: Black, Color: Black
Light weight affordable and still nice. Could be a little bit heavier at the base, I really like it so far. Seems pretty sturdy, definitely will need to check in to see the longevity of the product. Overall good budget buy.
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Reviewed in the United States on April 2, 2026
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Kimberly
Phoenix, US
★★★★★ 5
Use for canning rings
Color: Black
I bought this to hold my canning rings and it worked great. The smaller arm holds my wide mouth rings and the larger one holds the regular ones. When I’m canning, I’m able to move the whole thing into the kitchen due to its light weight and use what I need. Once I’m done with the rings, back they go.
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Reviewed in the United States on May 11, 2026
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John Armstrong
Pawtucket, US
★★★★★ 5
Great Price and Looks Good
Color: Black
The paper towel holder was a good price, and is easy to use. Needed minimal assembly, and fits well on my kitchen counter top near the stove.
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Reviewed in the United States on April 19, 2026
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Helenjane Julian
Houston, US
★★★★★ 5
Simple design
Color: Black
Very easy to assemble. Stable. Looks as pictured.
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Reviewed in the United States on May 21, 2026

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