Recombinant Human IL-33 Protein

Name: Recombinant Human IL-33 Protein
Brand: Novus Biologicals
SKU: NBP2-34871

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-34871

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Product Specifications
Scientific Data
Preparation & Storage
Background
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Key Product Details

Source

E. coli

Accession #

O95760

Conjugate

Unconjugated

Applications

Bioactivity, SDS-PAGE

View all IL-33 Proteins and Enzymes »

Product Specifications

Description

A single non-glycosylated polypeptide chain containing 159 amino acids corresponding to IL-33 Source: E. coli

Uniprot ID: O95760

Amino Acid Sequence: SITGISPITE YLASLSTYND QSITFALEDE SYEIYVEDLK KDEKKDKVLL SYYESQHPSN ESGDGVDGKM LMVTLSPTKD FWLHANNKEH SVELHKCEKP LPDQAFFVLH NMHSNCVSFE CKTDPGVFIG VKDNHLALIK VDSSENLCTE NILFKLSET

This lyophilized preparation is stable for 12 months from date of receipt at -20 to -70 degrees C, preferably desiccated. Upon reconstitution, the preparation can be stored for 1 month at 2-8 degrees C under sterile conditions, and for 3 months at -20 degrees C to -70 degrees C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Stock solutions should be aliquoted and stored at < -20 degrees C. Further dilutions should be made in appropriate buffered solutions

Purity

> 97 % pure by SDS-PAGE and HPLC

Endotoxin Level

Less than 1 EU/ug of IL-33 as determined by LAL method.

Predicted Molecular Mass

17.9 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Activity

IL33 Protein is fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine D10S cells is less than 0.05 ng/ml, corresponding to a specific activity of > 2.0 x 10^7 IU/mg.

Protein / Peptide Type

Recombinant Protein

Scientific Data Images for Recombinant Human IL-33 Protein

SDS-PAGE: Recombinant Human IL-33 Protein [NBP2-34871]

SDS-Page: Human IL-33 Protein [NBP2-34871]

Formulation, Preparation and Storage

NBP2-34871

Formulation	Lyophilized from a 0.2 um filtered concentrated solution in 20 mM PB, 150 mM NaCl, 1mM EDTA, pH7.4.
Preservative	No Preservative
Concentration	Lyoph
Reconstitution	Recommended to centrifuge prior to opening. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0mg/mL. Apportion stock solutions into working aliquots and store at
Format	Carrier-Free
Shipping	The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage	Store at -20 to -70C as supplied. After reconstitution, store at 2 to 8C for 1 month and at -20 to -70C for long term storage. Avoid repeated freeze-thaw cycles.

Background: IL-33

IL-33, encoded by IL-33 gene located on the Chr.9 in humans, is a 30 kDa 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 IL1alpha or IL1beta 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.

Long Name

Interleukin 33

Alternate Names

C9orf26, DVS27, IL33, NF-HEV

Gene Symbol

IL33

UniProt