IL-33 Antibody - Propeptide

Western blot shows lysates of Jurkat human acute T cell leukemia cell line, Raji human Burkitt's lymphoma cell line, and K562 human chronic myelogenous leukemia cell line. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human IL-33 Propeptide Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4810) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for IL-33 Propeptide at approximately 31 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.

IL-33 was detected in immersion fixed HUVEC human umbilical vein endothelial cells using Goat Anti-Human IL-33 Propeptide Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4810) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the Northern-Lights™ 557-conjugated Anti-Goat IgG Secondary Antibody (yellow; Catalog # NL001) and counterstained with DAPI (blue). View our protocol for Fluorescent ICC Staining of Cells on Coverslips.

• Reactivity: Hu
• Applications: WB, ICC/IF
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Unconjugated
• Concentration: LYOPH

IL-33 Antibody - Propeptide Summary

• Immunogen: E. coli-derived recombinant human IL-33 Propeptide
  Met1-Ser111
  Accession # O95760
• Specificity: Detects human IL-33 Propeptide in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with mature recombinant human IL-33 and mature recombinant mouse IL-33 is observed.
• Source: N/A
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Gene: IL33
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Immunocytochemistry 5-15 ug/mL
  • Western Blot 1 ug/mL

Packaging, Storage & Formulations

• Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
• Preservative: No Preservative
• Concentration: LYOPH
• Reconstitution Instructions: Reconstitute at 0.2 mg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for IL-33 Antibody - Propeptide

• C9orf26
• C9orf26chromosome 9 open reading frame 26 (NF-HEV)
• DKFZp586H0523
• DVS27
• DVS27-related protein
• IL1F11
• IL-1F11
• IL33
• IL-33
• interleukin 33
• Interleukin-1 family member 11
• interleukin-33
• NFHEV
• NF-HEV
• NF-HEVNFEHEV
• Nuclear factor from high endothelial venules
• RP11-575C20.2

Background

IL-33 (interleukin 33; also NF-HEV and IL-1F11) is a 31-32 kDa member of the IL-1 family of proteins. It is expressed in endothelial cells and reportedly has two functions; first, it induces Th2-type cytokines, and second, it acts as a nuclear transcription factor. Human IL-33 is 270 amino acids (aa) in length. It contains a putative proregion (aa 1-111) and a mature segment (aa 112-270). The proregion contains a bipartite NLS (aa 61-78), plus an  alpha -helical homeodomain-like HTH motif (aa 1-65). The HTH motif mediates nuclear localization and heterochromatin association. A potential caspase 1 cleavage site exists in human IL-33 (Ser111-Ser112), but not in IL-33 from canine, porcine or bovine. There is one splice variant that shows a deletion of aa 113-118. Over aa 1-111, human IL-33 propeptide is 45% aa identical to mouse IL-33 propeptide.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Publications for IL-33 Antibody (AF4810)(1)

Publication using AF4810

• Raphael, HE;Hassan, GF;Osorio, OA;Cohen, LS;Payne, MD;Katz-Kiriakos, E;Tata, I;Hicks, J;Byers, DE;Zhang, B;Alexander-Brett, J; Activator protein transcription factors coordinate human IL-33 expression from noncanonical promoters in chronic airway disease JCI insight 2024-03-08 [PMID: 38456508] (Western Blot, Human)

Bioinformatics

• Gene Symbol: IL33
• Uniprot:
  • O95760()