Specifications

• Pk:
  5 µG
• Source:
  E. coli
• Species:
  Human
• Storage conditions:
  Store at 4 °C for up to two weeks. For long term storage, aliquot and store at −20 °C, avoid freeze/thaw cycles.
• Biological activity:
  The ED50 as determined by the dose-dependant stimulation of TF-1 cells is 0.2 ng/ml, corresponding to Specific Activity of 5x1,000,000 IU/mg.
• Protein synonyms:
  B cell growth factor 1
• Protein/peptide name:
  IL4
• Purity:
  > 98.0% as determined by RP-HPLC and analysis by SDS-PAGE
• Solubility:
  It is recommended to reconstitute the lyophilized Interleukin-4 in sterile H2O not less than 100ug/ml, which can then be further diluted to other aqueous solutions.
• Sequence:
  The sequence of the first five N-terminal amino acids was determined and was found to be Met-His-Lys-Cys-Asp.
• Formulation:
  Lyophilized from concentrated (1mg/ml) solution in water containing no additives.
• Tested applications:
  SDS-PAGE , HPLC , FuncS