SKU: 23831699568

IL1RL1/ST2 His Tag Protein, Human

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Description

IL1RL1/ST2 His Tag Protein, HumanProduct Specification Species Human Antigen IL1RL1 ST2 Synonyms DER4, ST2, T1,IL1RL1 Accession Q01638 2 Amino Acid Sequence Lys19 Phe328, with C terminal 8* His

Product Specification


Species Human
Antigen IL1RL1/ST2
Synonyms DER4, ST2, T1,IL1RL1
Accession Q01638-2
Amino Acid Sequence

Lys19-Phe328, with C-terminal 8* His

KFSKQSWGLENEALIVRCPRQGKPSYTVDWYYSQTNKSIPTQERNRVFASGQLLKFLPAAVADSGIYTCIVRSPTFNRTGYANVTIYKKQSDCNVPDYLMYSTVSGSEKNSKIYCPTIDLYNWTAPLEWFKNCQALQGSRYRAHKSFLVIDNVMTEDAGDYTCKFIHNENGANYSVTATRSFTVKDEQGFSLFPVIGAPAQNEIKEVEIGKNANLTCSACFGKGTQFLAAVLWQLNGTKITDFGEPRIQQEEGQNQSFSNGLACLDMVLRIADVKEEDLLLQYDCLALNLHGLRRHTVRLSRKNPSKECFGGGSHHHHHHHH


Expression System HEK293
Molecular Weight 55-70kDa (Reducing)
Purity >95% by SDS-PAGE
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Tag His 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.Savenije O E. et al. (2011) Interleukin-1 receptor-like1 polymorphisms are associated with serum IL1RL1-a, eosinophils, and asthma inchildhood. J Allergy Clin Immunol. 127(3): 750-756.

2.Li H. et al. (2000) The cloning and nucleotidesequence of human ST2L cDNA. Genomics. 67(3): 284-290.

Background

ST2, also known as IL-1 R4 and T1, is an Interleukin-1 receptor family glycoprotein that contributes to Th2 immune responses. Human ST2 consists of a 310 amino acid extracellular domain (ECD) with three Ig-like domains, a 21 aa transmembrane segment, and a 207 aa cytoplasmic domain with an intracellular TIR domain. ST2 is expressed on the surface of mast cells, activated Th2 cells, macrophages, and cardiac myocytes. It binds IL-33, a cytokine that is upregulated by inflammation or mechanical strain in smooth muscle cells, airway epithelia, keratinocytes, and cardiac fibroblasts. IL-33 binding induces the association of ST2 with IL-1R AcP, a shared signaling subunit that also associates with IL-1 RI and IL-1 R rp2. In macrophages, ST2 interferes with signaling from IL-1 RI and TLR4 by sequestering the adaptor proteins MyD88 and Mal. In addition to its role in promoting mast cell and Th2 dependent inflammation, ST2 activation enhances antigen induced hypernociception and protects from atherosclerosis and cardiac hypertrophy. Upon tissue injury, induces UCP2-dependent mitochondrial rewiring that attenuates the generation of reactive oxygen species and preserves the integrity of Krebs cycle required for persistent production of itaconate and subsequent GATA3-dependent differentiation of inflammation-resolving alternatively activated macrophages.


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SKU: 23831699568

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Interesting little toy. It’s pretty flat, which surprised me for some reason, but very thick and tough, and big enough for our small, aggressive chewer. Feels really substantial, Hoping we’ve found a toy that lasts.
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Reviewed in the United States on May 26, 2026
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Size: Medium, Color: Strawberry
This can be a hit or miss. Believe it or not, my dachshund can tear through big dog toys, and he's had this one for almost 6 months now and loves it, chewing on it every day. He got to the stitching, but it still holds up well. Ordered another. I recommend this seller. PS - OCCASSIONALY WASH ALL THEIR TOYS!!!
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Reviewed in the United States on May 14, 2026
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Jennifer Jaqua
Boise, US
★★★★★ 5
Survived my dog… which almost nothing does!
Size: Medium, Color: Watermelon, Size: Medium, Color: Watermelon
I have a pit mix who is an expert-level destroyer of squeaky toys. Most “durable” toys last her maybe 5–15 minutes before the squeaker is gone. This one lasted a full HOUR of play (constant squeaking, chewing, and trying to find a weak spot) and she still didn’t manage to break it. That’s honestly unheard of for her. What I like: The flat shape makes it hard for her to get a good “kill grip” The squeaker isn’t easy to isolate and destroy It keeps her engaged instead of just ripping it open immediately She actually spent a lot of time just booping it with her nose to make it squeak, which she loves. I ended up putting it away before she could eventually destroy it, and I’ll be rotating it to make it last longer. It’s now a high-value toy in our house. If you have a dog that destroys every squeaky toy in minutes, this is absolutely worth trying. I’m already planning to buy more from this line.
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Reviewed in the United States on April 6, 2026
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Tatiana Clark
Dallas, US
★★★★★ 3
Not for aggressive chewers
Size: Medium, Color: Carrot
This product is pretty strong, but my dog tore it apart in 5 minutes. The size is great, and my dog loved tearing it apart. I wish it lasted longer.
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Reviewed in the United States on May 6, 2026
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Cf
Bozeman, US
★★★★★ 4
Good!!!
Size: Medium, Color: Avocado
Excellent quality and durability.My pets really enjoy it and it's almost impossible to damage it!!
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