Recombinant Human IL-13 Variant Protein

Name: Recombinant Human IL-13 Variant Protein
Brand: Novus Biologicals
SKU: NBP2-35024

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-35024

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Product Specifications
Scientific Data
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Background
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Key Product Details

Source

E. coli

Accession #

P35225

Conjugate

Unconjugated

Applications

Bioactivity, SDS-PAGE

View all IL-13 Proteins and Enzymes »

Product Specifications

Description

A single non-glycosylated polypeptide chain containing 112 amino acids, with a substitution of Q for R at position 112 compared with the wild type IL-13 Source: E. coli

Uniprot ID: P35225

Amino Acid Sequence: GPVPPSTALR ELIEELVNIT QNQKAPLCNG SMVWSINLTA GMYCAALESL INVSGCSAIE KTQRMLSGFC PHKVSAGQFS SLHVRDTKIE VAQFVKDLLL HLKKLFREGQ FN

This lyophilized preparation is stable at 2-8 degrees C, but should be kept at -20 degrees C for long term storage, preferably desiccated. Upon reconstitution, the preparation is most stable at -20 to -80 degrees C, and can be stored for one week at 2-8 degrees C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 degrees C to -80 degrees C. Avoid repeated freeze/thaw cycles.

Purity

> 97 % pure by SDS-PAGE and HPLC

Endotoxin Level

Less than 1 EU/ug of IL-13 as determined by LAL method.

Predicted Molecular Mass

12.3 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

IL-13 protein is fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using human TF-1 cells is less than 0.5 ng/ml, corresponding to a specific activity of > 2.0 x 10^6 IU/mg

Protein / Peptide Type

Recombinant Protein

Scientific Data Images for Recombinant Human IL-13 Variant Protein

SDS-PAGE: Recombinant Human IL-13 Variant Protein [NBP2-35024]

SDS-Page: Recombinant Human IL-13 Variant Protein [NBP2-35024]

Formulation, Preparation and Storage

NBP2-35024

Formulation	Lyophilized from a 0.2 um filtered concentrated solution in PBS, pH 7.2.
Preservative	5% Trehalose
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 <-20C.
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-13

Human Interleukin-13 (IL-13) is expressed by the IL13 gene located on the chromosome 5. IL-13 is a 132 amino acid protein containing a proposed 20 amino acid signal peptide, and shares approximately 30 % amino acid sequence homology to human IL-4. Additionally, the two cytokines exhibit overlapping biological activities. Human IL-13 is produced by activated Th0, Th1-like Th2-like and CD8 T cells. Similarly to IL-4, IL-13 has multiple effects on the differentiation and functions of monocytes/macrophages. IL-13 can suppress the cytotoxic functions of monocytes/macrophages. IL-13 variant is a natural variant of IL-13 and has a Q instead of R112 of wild type, which associated with increased risk for asthma development and at homozygosity associated with higher levels of serum total IgE in some allergic rhinitis patients.

Long Name

Interleukin 13

Alternate Names

IL13, NC30, P600

Gene Symbol

IL13

UniProt