Target Name: 
Human IL-15 Protein
Source:
Recombinant Human IL-15 Protein is expressed from E.coli system,  the target gene encoding Asn49-Ser162 without tag. 
Molecular Weight:
The protein has a predicted molecular weight of 12.8kDa on SDS-PAGE with DTT-reduced condition.
Purity:
>95% based on SDS-PAGE under reducing condition and SEC-HPLC.
Formulation:
20mM Tris, 150mM NaCl at pH7.5 with 8% trehalose, 0.22 µm filtered, Lyophilized
Endotoxin Level:
Less than 0.05EU per ug by the LAL method.
Vial Size:
100µg, 500ug
Protein Concentration:
Protein concentration is measured by UV280 and is bottled at lot-specific concentration.
Reconstitution
Dissolve the lyophilized protein in distilled water. Reconstitution to no less that 100µg/mL is recommended. 
Storage and Handling:
Quick spin the vial after receiving. Unopened vial can be stored at ≤ -20°C for 12 months from date of receipt. This stock solution should be aliquoted after reconstitution and stored at ≤ -70°C for 3-6 months. Minimize the freeze/thaw cycles.