Description: Leukemia inhibitory factor (LIF) is a member of the interleukin 6 (IL-6) family that is made by a variety of adult and embryonic tissues. LIF signals through the glycoprotein 130 (gp130)/LIF receptor (LIFR) heterodimer to activate STAT3 and MAPK signaling. LIF functions during hematopoietic differentiation, neuronal cell differentiation, kidney development, and inflammatory processes. Human LIF may also be an important factor during human embryonic stem cell (hESC) self-renewal, pluripotency, and embryonic implantation.
Source: Genetically modified E.coli.
Predicted MW: Monomer, 19.8 kDa (181 aa)
AA Sequence: MSPLPITPVN ATCAIRHPCH NNLMNQIRSQ LAQLNGSANA LFILYYTAQG EPFPNNLDKL CGPNVTDFPP FHANGTEKAK LVELYRIVVY LGTSLGNITR DQKILNPSAL SLHSKLNATA DILRGLLSNV LCRLCSKYHV GHVDVTYGPD TSGKDVFQKK KLGCQLLGKY KQIIAVLAQA F
Formulation: Lyophilized from a sterile (0.2 micron) filtered aqueous solution containing 0.1% Trifluoroacetic Acid (TFA)
*Lot-specific values for the following specifications are supplied with each product on its corresponding COA. The values provided here are minimum expected values to pass internal requirements.
|Specification||Method of Determination||Acceptance Criteria|
|Purity||Reducing and Non-Reducing SDS PAGE||≥95%|
|Endotoxin||Kinetic LAL||≤1 EUs/µg|
|Biological Activity||TF-1 cell proliferation||≤200 pg/mL; ≥ 5.0 x 10^6 units/mg|
Country of Origin: USA Shipping: Room temperature
Product Reconstitution: Sterile 10 mM acetic acid at 0.1 mg/mL
Instructions: Centrifuge vial before opening. Suspend the product by gently pipetting the above recommended solution down the sides of the vial. DO NOT VORTEX. Allow several minutes for complete reconstitution. For prolonged storage, dilute to working aliquots in a 0.1% BSA solution, store at -80°C and avoid repeat freeze thaws.
12 months from date of receipt when stored at -20°C to -80°C as supplied.
1 month when stored at 4°C after reconstituting as directed.
3 months when stored at -20°C to -80°C after reconstituting as directed.
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