Species of Origin
His Tag (N-term)
Lyophilized from a 0.2 µm filtered solution of PBS, pH 7.4.
>95% as determined by SDS-PAGE analysis.
The protein has a calculated MW of 20.68 kDa.
The protein migrates as 17-25 kDa under reducing condition (SDS-PAGE analysis).
Measure by its ability to induce IL-6 secretion in M1 cells. The ED₅₀ for this effect is <0.5 ng/mL. The specific activity of recombinant mouse LIF is > 2 x 10⁶ IU/mg.
<0.1 EU per 1 μg of the protein by the LAL method.
Leukemia inhibitory factor (LIF) is a pleiotropic glycoprotein, belonging to the IL-6 receptor family. Mouse LIF shares 79% sequence homology with human LIF. LIF is a 19.7 kDa protein containing 202 amino acid which high expression in human liver, bone, uterus, kidney and the central nervous system. LIF is a inducer of differentiation in M1 leukaemia cells, osteoblasts and glia. Not only stimulates proliferation of DA1 cells inhibit proliferation of corticotrophs and promote cell survival in some cell types but also induces apoptosis in others.
Leukemia inhibitory factor, Differentiation-stimulating factor, D factor, LIF
It is recommended to reconstitute the lyophilized protein in sterile H₂O to a concentration not less than 200 μg/mL and incubate the stock solution for at least 20 min to ensure sufficient re-dissolved.
The product is shipped with polar packs. Upon receipt, store it immediately at -20°C or lower for long term storage.
Stability & Storage
This product is stable after storage at:
- -20°C for 12 months in lyophilized state from date of receipt.
- -20°C or -80°C for 1 month under sterile conditions after reconstitution.
Avoid repeated freeze/thaw cycles.
SDS-PAGE analysis of recombinant mouse LIF.1/1
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Datasheet & Documents1/1
Disclaimer：For Research Use Only. Not for use in diagnostic or therapeutic procedures.