Human IL 7 Protein
Recombinant of human, yeast IL 7 protein
Product Specifications
Product Name Alternative
Lymphopoietin 1 (LP-1), pre-B cell factor, IL-7.
Source
Saccharomyces cerevisiae
Purity
Greater than 98.0% as determined by SDS-PAGE.
Bioactivity
The ED50 as determined by the dose-dependent stimulation of thymidine uptake by murine pre-B cell line 2E8 is 2 x 106 units/mg.
Form
Sterile Filtered White lyophilized (freeze-dried) powder.
Solubility
It is recommended to reconstitute the lyophilized Interleukin -7 in sterile 18MΩ-cm H2O not less than 100μg/ml, which can then be further diluted to other aqueous solutions.
Storage Conditions
Stability: Lyophilized Interleukin-7 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL7 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
Notes
For research use only.
Applications Notes
Protein content: Protein quantitation was carried out by two independent methods:1. UV spectroscopy at 280 nm using the absorbency value of 0.418 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics) . 2. Analysis by RP-HPLC, using a standard solution of IL-7 as a Reference Standard
Preservative
Lyophilized from a concentrated (1mg/ml) solution in water containing 20mM phosphate buffer.
AA Sequence
The sequence of the first five N-terminal amino acids was determined and was found to be Asp-Cys-Asp-Ile-Glu
Available Sizes
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