LIF (Mouse)

CRP0899

Recombinant Mouse Leukemia inhibitory factor produced in E. coli is a single non-glycosylated polypeptide chain containing 181 amino acids and having a molecular mass of 20kDa.

Leukemia Inhibitory Factor (LIF) is a lymphoid factor which promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. LIF has a number of other activities including cholinergic neuron differentiation, control of stem cell pluripotency,bone and fat metabolism, mitogenesis of certain factor dependent cell lines and promotion of megakaryocyte production in vivo. Mouse LIF is a 20 kDa protein containing 181 amino acid residues.

>98% by SDS-PAGE and HPLC analyses.

The activity of mouse LIF is determined by the ability to induce differentiation of murine M1myeloid leukemic cells. The minimum detectable concentration of mouse LIF in this assay is 0.5 ng/mL. The specific activity is >1 x 108 units/mg, where 50 units is defined as the amountof mouse LIF required to induce differentiation in 50% of the M1 colonies in 1 mL agarcultures.

Sterile Filtered White lyophilized (freeze-dried) powder.

Lyophilized from a 0.2mm filtered concentrated (1.0mg/ml) solution in PBS, pH 7.4.

Less than 1EU/mg of rmLIF as determined by LAL method.

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤20°C. Further dilutions should be made in appropriate buffered solutions.

This lyophilized preparation is stable at 2-8°C, but should be kept at -20°C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8°C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20°C to -70°C. Avoid repeated freeze/thaw cycles.

Gene Name

Lif

Synonyms

OTTMUSP00000005253; CDF; D-FACTOR; Emfilermin; HILDA; MLPLI; D factor; Differentiation- stimulating factor; Leukemia inhibitory factor precursor; Melanoma-derived LPL inhibitor; Cholinergic differentiation factor

GeneID

16878

mRNA Refseq

NM_001039537

Protein Refseq

NP_001034626

MIM

159540

UniProt ID

Q3U1H5; P09056

Chromosome Location

Chr 11: 4.16 - 4.17 Mb

Pathway

Cytokine-cytokine receptor interaction; Jak-STAT signaling pathway

Function

cytokine activity; growth factor activity; leukemia inhibitory factor receptor binding