ProDots Recombinant Human IL-2 Protein

Supplied as ready-to-use 5 ug protein balls

Pre-aliquoted, lyophilized protein dots for use in cell culture medium

  • Rolls out of bottle for easy cell culture medium preparation
  • Eliminates time spent aliquoting
  • One protein dot can be used to make 500 mL of 10 ng/mL cell culture medium

Why use ProDots™ Proteins Instead of Standard Lyophilized Protein?

ProDots® proteins are designed to reduce cell culture media preparation time while ensuring optimal protein recovery and bioactivity. Unlike standard lyophilized protein, which is shipped as a diffuse residue within a vial, ProDots® proteins are neatly bundled into the shape of a ball. In this form ProDots® proteins can be rolled directly into cell culture media. ProDots® proteins rehydrate instantly in media to maximize the recovery of purchased protein and to reliably reconstitute it at a desired concentration for use in cell culture media. ProDots® proteins can be conveniently stored at room temperature where they will remain stable for 6 months or at 4 ºC where they will remain stable for 12 months. The accessible storage and high stability of ProDots® proteins makes them ideal for quick and easy preparation of cell culture media.

What are ProDots® Proteins?

ProDots® proteins are R&D Systems industry-leading quality, highly bioactive proteins packaged into easy-to-use lyophilized “dots”. Designed to be stable at 4 ºC and to dissolve instantly, ProDots® proteins can be rolled into cell culture media to quickly produce media with a desired working protein concentration.

  • Purity
    >97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
  • Endotoxin Level
    <0.01 EU per 1 μg of the protein by the LAL method.
  • Activity
    Measured in a cell proliferation assay using CTLL‑2 mouse cytotoxic T cells. Gearing, A.J.H. and C.B. Bird (1987) in Lymphokines and Interferons, A Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 295. The ED50 for this effect is typically 0.05-0.25 ng/mL
  • Source
    E. coli-derived Ala21 - Thr153, with an N-terminal Met
  • Accession #
  • N-terminal Sequence
  • Predicted Molecular Mass
    15 kDa
    13 kDa, reducing conditions
Reconstitution Add ProDot directly to the medium or reconstitute at 100 μg/mL in sterile 100 mM Acetic Acid.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thawcycles.
• 6 months from date of receipt at 2-8 °C assupplied.
• 1 month at 2-8 °C under sterile conditions afterreconstitution.
• 3 months at -20 to -80 °C under sterile conditionsafter reconstitution.
Data Images
1 μg/lane of ProDots® Recombinant Human IL-2 was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by silver staining, showing a single band at 13 kDa.
ProDots® Recombinant Human IL-2 stimulates cell proliferation of the CTLL-2 mouse cytotoxic T cell line. The ED50 for this effect is typically 0.05-0.26 ng/mL.
Background: IL-2
IL-2 (Interleukin 2) is a critical cytokine in T cell biology. It promotes T cell activation and expansion, the development, maintenance and function of regulatory T cells (Treg), and the differentiation of CD8+ T cells into terminal effector cells and memory cells. IL-2 signals through a receptor complex composed of CD25/IL-2 R alpha, IL-2 R beta, and the Common gamma Chain (gamma c). IL-2 R beta is also a component of the IL-15 receptor complex. Gamma c is also a signaling subunit in the receptors for IL-4, -7, -9, -15, and -21.
  • Long Name:
    Interleukin 2
  • Entrez Gene IDs:
    3558 (Human); 16183 (Mouse); 116562 (Rat); 396868 (Porcine); 280822 (Bovine); 403989 (Canine); 100034204 (Equine); 751114 (Feline); 100302458 (Rabbit)
  • Alternate Names:
    aldesleukin; IL2; IL-2lymphokine; interleukin 2; interleukin-2; involved in regulation of T-cell clonal expansion; T cell growth factor; T-cell growth factor; TCGF
Related Research Areas

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