SKU: 74737493196

IL-33 Protein, Human

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Description

IL-33 Protein, HumanProduct Specification Species Human Synonyms Interleukin 33, IL 1 F11, NF HEV Accession O95760 Amino Acid Sequence Ser112 Thr270 Expression System E. coli Molecular Weight Approximately 17. 9 kDa, a single non glycosylated polypeptide chain containing 159 amino acids. Purity 96% by SDS PAGE or HPLC. Conjugation Unconjugated Tag No Tag Physical Appearance Lyophilized Powder Storage Buffer 20 mM PB, with 150 mM NaCl, pH 7. 4. Reconstitution Before use

Product Specification


Species Human
Synonyms Interleukin-33, IL-1 F11, NF-HEV
Accession O95760
Amino Acid Sequence

Ser112-Thr270

Expression System E.coli
Molecular Weight Approximately 17.9 kDa, a single non-glycosylated polypeptide chain containing 159 amino acids.
Purity >96% by SDS-PAGE or HPLC.
Conjugation Unconjugated
Tag No Tag
Physical Appearance Lyophilized Powder
Storage Buffer

20 mM PB, with 150 mM NaCl, pH 7.4.

Reconstitution Before use this product, please read the direction below carefully.
This vial must be briefly centrifuged prior to opening to bring the contents to the bottom.
Reconstitute in a sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/ml.
Stock solutions should be apportioned into working aliquots and stored at ≤ -20℃.
Further dilutions should be made in appropriate buffered solutions.
Stability & Storage

For long term storage, the product should be stored ≤ -20℃.
Please avoid repeated freeze-thaw cycles after reconstitution.
12 months from date of receipt, -20 to -70℃ as supplied.
1 month, 2 to 8℃ under sterile conditions after reconstitution.
3 months, -20 to -70℃ under sterile conditions after reconstitution.

Background

IL-33, encoded by IL-33 gene located on the Chr.9 in humans, is a 30kDa proinflammatory protein belonging to the IL-1 superfamily and it shares less than 20% a.a. sequence identity with other members. IL-33 secreted by high endothelial venules at high levels, which is found in tonsils, Peyer patches and mesenteric lymph nodes, but not in placenta. It is upregulated in arterial smooth muscle, dermal fibroblasts, and keratinocytes following IL1α or IL1β stimulation. It elicits its biological effects by interacting with IL1RL1/ST2 and its stimulation recruits MYD88, IRAK1, IRAK4, and TRAF6, followed by phosphorylation of MAPK3/ERK1 and/or MAPK1/ERK2, MAPK14, and MAPK8. IL-33 mature protein has 52-58% a.a. sequence identity with mouse and rat IL-33. Recombinant Human IL-33 is a 17.9kDa protein containing 159 amino acid residues polypeptide chain.

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Exchange/Return Notes
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SKU: 74737493196

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Cynthia Ramos
Houston, US
★★★★★ 5
Eric Carle es el mejor!
Format: Board book
Always in the look for bilingual Spanish books and I’m glad this one arrived just in time for our thematic lessson for the month of January.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
G
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Gia Marie
Dallas, US
★★★★★ 5
Not as good as the Brown bear brown bear, but my kids love this book
Format: Board book
This book is a sequel to Brown Bear Brown bear and it is a visually appealing book that my kids love. My one complaint is that this book is all about what you hear, but they used many animals that people don't know what sounds they make. I have looked up how flamingos flute on YouTube and this is not a sound I can replicate. Don't make the sounds up either unless everyone who reads to your kids is in on your idea of what zebras sound like. Trust me, your toddler will notice. Aside from that flaw, the book is one my kids ask for again and again and this is in fact my second copy of this book, the first one was loved to death.
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Reviewed in the United States on May 30, 2024
A
Verified Purchase
AK
Los Angeles, US
★★★★★ 5
Love. I wish more books had bilingual reading options
Format: Board book
This book has been a hit since my now 4 year old daughter was born and for my 2 year old son. They love it and learning Spanish
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Reviewed in the United States on December 19, 2025
S
Verified Purchase
Susanna Cole
Lexington, US
★★★★★ 5
Fantastic
Format: Board book
A classic. Little kids want to hear this book over and over again. I prefer it to Brown Bear Brown Bear which is also wonderful.
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Reviewed in the United States on May 31, 2025
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Leandra Gomez
West Palm Beach, US
★★★★★ 5
⭐ Eco-Friendly and Great Quality Cotton Swabs 🤍✨
These Q-tips cotton swabs are excellent quality and very reliable. I love that they’re made with biodegradable paper sticks, which makes them a more eco-friendly option. The cotton is soft yet secure, and they work perfectly for beauty, cleaning, and everyday use. With 500 in the pack, you get a great quantity for the price. Definitely a staple I always keep on hand 😊✨
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Reviewed in the United States on March 26, 2026

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