We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Tag
N-terminal 6xHis-tagged
Molecular Weight
22.8 kDa
Relevance
Cytokine with a wide variety of biological functions in immunity, tissue regeneration, and metabolism.
Source
Yeast
Form
Lyophilized powder
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Lyophilized from a 0.2 um filtered PBS, 6% Trehalose, pH 7.4
Purity
Greater than 95% as determined by SDS-PAGE.
Storage
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Reference
"Complementary DNA for a novel human interleukin (BSF-2) that induces B lymphocytes to produce immunoglobulin." Hirano T., Yasukawa K., Harada H., Taga T., Watanabe Y., Matsuda T., Kashiwamura S., Nakajima K., Koyama K., Kishimoto T. Nature 324:73-76 (1986) "Structure and expression of human B cell stimulatory factor-2 (BSF-2/IL-6) gene." Yasukawa K., Hirano T., Watanabe Y., Muratani K., Matsuda T., Nakai S., Kishimoto T. EMBO J. 6:2939-2945 (1987)