Description
LIF, human recombinant is available at Gentaur for Next week delivery.
A cytokine that affects cell growth by inhibiting differentiation
Biomolecule/Target:
Alternates names: Leukemia Inhibitory Factor, Differentiation-stimulating factor, D factor, Melanoma-derived LPL inhibitor, INN=Emfilermin
Synonyms: Leukemia Inhibitory Factor
Background Information: Leukemia Inhibitory Factor (LIF) is a lymphoid factor that promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. LIF 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. Human and mouse LIF exhibit a 78% identity in its amino acid sequence. Human LIF is as active on human cells as is it is on mouse cells, though mouse LIF is about 1000 fold less active on human cells, than human LIF. Recombinant human LIF produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 180 amino acids and having a molecular mass of 19.7 kDa.
Reconstitution Instructions: Reconstitute in H₂O to a concentration of 0.1-1.0 mg/ml. The solution can then be diluted into other aqueous buffers and stored at 4°C for 1 week or –20°C for future use.
NCBI Gene Symbol: LIF
Gene ID: 3976
NCBI Accession: P15018
Additional Information
Size: |
50 μg |
Country of Manufacturing Origin: |
USA |
Country of Animal Origin: |
USA |
Gene Source: |
Human |
Recombinant: |
Yes |
Source: |
E. coli |
Purity by SDS-PAGE: |
≥95% |
Assay: |
SDS-PAGE |
Purity: |
≥95% |
Assay 2: |
HPLC |
Endotoxin Level: |
<0.1 ng/μg |
Activity (Specifications/test method): |
N/A |
Biological activity: |
The ED₅₀ determined by the M1 cell differentiation assay is < 0.01 ng/ml, corresponding to a specific activity of 100MIU/mg. |
Results: |
N/A |
Molecular Weight: |
19.7 kDa |
Storage Temperature: |
-20°C |
Shelf Life: |
12 months |
Concentration: |
N/A |
Appearance: |
Lyophilized protein |
Handling: |
Centrifuge the vial prior to opening. |