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Human CellExp LIF, human recombinant protein


Product info
Primary Accession P15018
Calculated MW Calculated MW of 19.9 kDa with Gly-Pro at the N- terminus. The predicted N-terminus is Ser 23. DTT-reduced Protein migrates as 35-45 kDa.
Additional Info
Gene ID 3976
Gene Symbol LIF
Gene Source Human
Source HEK 293 cells
Assay&Purity SDS-PAGE; ≥95%
Assay2&Purity2 N/A;
Recombinant Yes
Target/Specificity LIF
Application Notes Centrifuge the vial prior to opening. Reconstitute in sterile deionized water to a concentration of 50 µg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C.
Format Lyophilized powder
Storage -20°C; Sterile filtered through a 0.22 micron filter. Lyophilized from 1 x PBS, pH 7.4. Generally 5-8% Mannitol or trehalose is added as a protectant before lyophilization.
Citations (0)

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Leukemia inhibitory factor, or LIF, an interleukin 6 class cytokine, is a protein in cells that affects cell growth and development. Leukemia Inhibitory Factor has several functions such as cholinergic neuron differentiation, control of stem cell pluripotency, bone & fat metabolism, mitogenesis of factor dependent cell lines & promotion of megakaryocyte production in vivo. Removal of LIF pushes stem cells toward differentiation, but they retain their proliferative potential or pluripotency. Therefore LIF is used in mouse embryonic stem cell culture. It is necessary to maintain the stem cells in an undifferentiated state, however genetic manipulation of embryonic stem cells allows for LIF independent growth, notably overexpression of the gene Nanog. LIF is not required for culture of human embryonic stem cells.


Moreau J.-F.,et al.Nature 336:690-692(1988).
Lowe D.G.,et al.DNA 8:351-359(1989).
Brandenberger R.,et al.Nat. Biotechnol. 22:707-716(2004).
Stahl J.,et al.J. Biol. Chem. 265:8833-8841(1990).
Ota T.,et al.Nat. Genet. 36:40-45(2004).

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$ 285.00
Cat# PBV10892r
(40 western blots)
Availability: 5-7days
Bulk Size
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