Name :
Recombinant Canine IL-2 Protein (147 Cys/Ser)
Biological Activity :
Background :
Interleukin-2, also known as a T-cell growth factor, TCGF, Aldesleukin, and IL2, is a secreted protein that belongs to the IL-2 family. Interleukin-2 / IL-2 was the first interleukin molecule to be discovered. Interleukin-2 / IL-2 molecule was first purified to homogeneity by immunoaffinity chromatography by Kendall Smith and his team at Dartmouth Medical School. Interleukin-2 / IL-2 was also the first cytokine shown to mediate its effects via a specific IL-2 receptor, and it was also the first interleukin to be cloned and expressed from a complementary DNA (cDNA) library. Interleukin-2 / IL-2 was designated number 2 because Smith’s data at the time indicated that IL-1, produced by macrophages, facilitates IL-2 production by T lymphocytes (T cells). Interleukin-2 / IL-2 is produced by T-cells in response to antigenic or mitogenic stimulation, this protein is required for T-cell proliferation and other activities crucial to regulation of the immune response. Interleukin-2 / IL-2 is normally produced by the body during an immune response. When environmental substances (molecules or microbes) gain access to the body, these substances (termed antigens) are recognized as foreign by antigen receptors that are expressed on the surface of lymphocytes. Antigen binding to the T cell receptor (TCR) stimulates the secretion of Interleukin-2 / IL-2 and the expression of IL-2 receptors IL-2R. The IL-2 / IL-2R interaction then stimulates the growth, differentiation, and survival of antigen-selected cytotoxic T cells via the activation of the expression of specific genes. Interleukin-2 / IL-2 can stimulate B-cells, monocytes, lymphokine-activated killer cells, natural killer cells, and glioma cells. The World Reference Standard for Interleukin-2 / IL-2 is produced by the National Institute of Biological Standards and Control in the UK. A recombinant form of Interleukin-2 / IL-2 for clinical use is manufactured by Chiron Corporation with the brand name Proleukin. It has been approved by the Food and Drug Administration (FDA) for the treatment of cancers (malignant melanoma, renal cell cancer), and is in clinical trials for the treatment of chronic viral infections, and as a booster (adjuvant) for vaccines. The use of Interleukin-2 / IL-2 in HIV therapy is ineffective. Cancer Immunotherapy Immune Checkpoint Immunotherapy Targeted Therapy
Biological Activity :
1. Measured by its binding ability in a functional ELISA.2. Immobilized recombinant Canine IL2 (cat:70014-DNAE) at 10 μg/mL can bind recombinant human IL2Ra-Fc (Cat:10165-H02H) with a linear range of 0.3125-20 μg/ml.
Expression Host :
Canine
Source :
E. coli
Tag :
Protein Accession No. :
Q29416
NCBI Gene ID :
Synonyms :
Synonyms :
interleukin 2
Amino Acid Sequence :
Molecular Weight :
The recombinant canine IL2 consists of 136 amino acids and has a calculated molecular mass of 15.6 kDa. In SDS-PAGE under reducing conditions, it migrates as an approximately 15 kDa band.
Purity :
> 95 % as determined by SDS-PAGE
State of Matter :
Product Concentration :
Storage and Stability :
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃. Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Endotoxin Level :
Please contact us for more information.
Protein Construction :
A DNA sequence encoding the mature form of canine IL2 (Q29416) (Ala 21-Thr 155, 147Cys/Ser) was expressed, with an initial Met at the N-terminus.
Buffer Solution :
Lyophilized from sterile PBS, pH 7.4.Please contact us for any concerns or special requirements. Normally 5 % – 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hardcopy of datasheet.
Shipping :
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Redissolution :
A hardcopy of datasheet with reconstitution instructions is sent along with the products. Please refer to it for detailed information.
Synonyms :
References & Citations :
Smith KA, et al.,1980, J. Exp. Med.151 (6): 1551-6. Smith KA, et al.,1980, Nature. 287 (5785): 853-5. Taniguchi T, et al.,1983, Nature. 302 (5906): 305. Cantrell DA, et al.,1984, Science. 224 (4655): 1312-6. Smith KA, et al.,1988, Science. 240 (4856): 1169-76. Wang X. et al., 2005, Science 310:1159-63. Stauber D.J. et al., 2006, Proc. Natl. Acad. Sci. USA. 103: 2788-93.
MedChemExpress (MCE) recombinant proteins include: cytokines, enzymes, growth factors, hormones, receptors, transcription factors, antibody fragments, etc. They are often essential for supporting cell growth, stimulating cell signaling pathways, triggering or inhibiting cell differentiation; and are useful tools for elucidating protein structure and function, understanding disease onset and progression, and validating pharmaceutical targets. At MedChemExpress (MCE), we strive to provide products with only the highest quality. Protein identity, purity and biological activity are assured by our robust quality control and assurance procedures.
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