prospec

IL 2 Human

  • Name
  • Description
  • Pricings
  • Quantity
  • IL 2 Human
  • Interleukin-2 Human Recombinant
  • Shipped at Room temp.

Catalogue number

CYT-209

Synonyms

T-cell growth factor (TCGF), Aldesleukin, Lymphokine, IL-2.

Introduction

IL2 is a secreted cytokine that is important for the proliferation of T and B lymphocytes. The receptor of this cytokine is a heterotrimeric protein complex whose gamma chain is also shared by interleukin 4 (IL4) and interleukin 7 (IL7). The expression of this gene in mature thymocytes is monoallelic, which represents an unusual regulatory mode for controlling the precise expression of a single gene. The targeted disruption of a similar gene in mice leads to ulcerative colitis-like disease, which suggests an essential role of this gene in the immune response to antigenic stimuli.

Description

Interleukin-2 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 133 amino acids and having a molecular mass of 15.4kDa.

The IL-2 is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Physical Appearance

Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation

The protein was lyophilized from a 0.2μm filtered concentrated solution (1.0mg/ml) in PBS, pH 5.0.

Solubility

It is recommended to reconstitute the lyophilized Interleukin-2 in sterile distilled water not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

Stability

Lyophilized Interleukin-2 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL2 should be stored at 4°C between 2-7 days and for future use below -18°C.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Please prevent freeze-thaw cycles.

Purity

Greater than 97.0% as determined by:
(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.

Amino acid sequence

APTSSSTKK TQLQLEHLLL DLQMILNGIN NYKNPKLTRM LTFKFYMPKK ATELKHLQCL EEELKPLEEV LNLAQSKNFH LRPRDLISNI NVIVLELKGS ETTFMCEYAD ETATIVEFLN RWITFCQSII STLT.

Biological Activity

The ED50 as determined by the dose-dependent stimulation of murine CTLL-2 cells is less than 0.1 ng/ml, corresponding to a Specific Activity of 1x107IU/mg.

References

1.Title:CD8 Kinetically Promotes Ligand Binding to the T-Cell Antigen Receptor.
Publication:Biophysical Journal Volume 89 September 2005 2121–2133.
Link:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1366714/pdf/2121.pdf

2.Title: Detection of expressed IL-32 in human stomach cancer using ELISA and immunostaining
Publication:  J Microbiol Biotechnol 18.9 (2008): 1606-1612.
Link: http://www.jmb.or.kr/submission/Journal/018/JMB018-09-19.pdf

3. Title: Conservation of cytokine-mediated responses in innate immunity: a flow cytometric study investigating the effects of human proinflammatory cytokines on phagocytosis in the earthworm Eisenia hortensis
Publication:  Invertebrate Survival Journal 5 (2008): 124-134.

Usage

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
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