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Testing Data

LIF active protein

Human LIF

Gene Names
LIF; CDF; DIA; HILDA; MLPLI
Reactivity
Species Reactivity: Human
Cross Reactivity: Mouse
Purity
Above 98% as determined by SDS-PAGE Analysis.
Synonyms
LIF; Human LIF; Recombinant Human LIF; LIF active protein
Ordering
For Research Use Only!
Host
E Coli
Reactivity
Species Reactivity: Human
Cross Reactivity: Mouse
Purity/Purification
Above 98% as determined by SDS-PAGE Analysis.
Sequence
SPLPITPVN ATCAIRHPC HNNLMNQIR SQLAQLNGS ANALFILYY TAQGEPFPN NLDKLCGPN VTDFPPFHA NGTEKAKLV ELYRIVVYL GTSLGNITR DQKILNPSA LSLHSKLNA TADILRGLL SNVLCRLCS KYHVGHVDV TYGPDTSGK DVFQKKKLG CQLLGKYKQ IIAVLAQAF
Biological Activity
Determined by its ability to stimulate the proliferation of human TF-1 cells. The expected ED50 is <= 0.1 ng/ml, corresponding to a specific activity of >= 1 x 107 units/mg.
Cell Type
T Cells, Stem Cells
Preparation and Storage
At -20 degree C

Testing Data

Testing Data
Related Product Information for LIF active protein
LIF is a pleiotrophic factor produced by multiple cell types including T cells, myelomoncytic lineages, fibroblasts, liver, heart and melanoma. LIF promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. Other activities include the stimulation of acute phase protein synthesis by hepatocytes, stimulation of differentiation of cholinergic nerves, and suppression of adipogenesis by inhibiting the lipoprotein lipase in adipocytes. While human LIF is active on mouse cells and is widely used in the maintenance of murine ESC to prevent spontaneous differentiation, mouse LIF is not active on human cells due to its inability to bind to the human LIF receptor. Recombinant human LIF is a 19.6 kDa protein containing 180 amino acids residues including three disulfide bonds.

NCBI and Uniprot Product Information

NCBI GI #
NCBI GeneID
UniProt Accession #
Molecular Weight
9,563 Da
NCBI Official Full Name
Leukemia inhibitory factor
NCBI Official Synonym Full Names
leukemia inhibitory factor
NCBI Official Symbol
LIF
NCBI Official Synonym Symbols
CDF; DIA; HILDA; MLPLI
NCBI Protein Information
leukemia inhibitory factor; D factor; human interleukin in DA cells; melanoma-derived LPL inhibitor; differentiation-inducing factor; hepatocyte-stimulating factor III; cholinergic differentiation factor; differentiation-stimulating factor; differentiation inhibitory activity
UniProt Protein Name
Leukemia inhibitory factor
UniProt Gene Name
LIF
UniProt Synonym Gene Names
HILDA; LIF; D factor; MLPLI
UniProt Entry Name
LIF_HUMAN

NCBI Description

The protein encoded by this gene is a pleiotropic cytokine with roles in several different systems. It is involved in the induction of hematopoietic differentiation in normal and myeloid leukemia cells, induction of neuronal cell differentiation, regulator of mesenchymal to epithelial conversion during kidney development, and may also have a role in immune tolerance at the maternal-fetal interface. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Mar 2012]

Uniprot Description

LIF: LIF has the capacity to induce terminal differentiation in leukemic cells. Its activities include the induction of hematopoietic differentiation in normal and myeloid leukemia cells, the induction of neuronal cell differentiation, and the stimulation of acute-phase protein synthesis in hepatocytes. Belongs to the LIF/OSM family.

Protein type: Secreted, signal peptide; Secreted

Chromosomal Location of Human Ortholog: 22q12.2

Cellular Component: extracellular space; cytoplasm

Molecular Function: growth factor activity; leukemia inhibitory factor receptor binding; cytokine activity; receptor binding

Biological Process: transcription from RNA polymerase II promoter; multicellular organismal development; negative regulation of hormone secretion; leukemia inhibitory factor signaling pathway; tyrosine phosphorylation of Stat3 protein; decidualization; positive regulation of tyrosine phosphorylation of Stat3 protein; negative regulation of cell proliferation; positive regulation of MAPKKK cascade; positive regulation of cell proliferation; negative regulation of meiosis; positive regulation of macrophage differentiation; muscle morphogenesis; positive regulation of peptidyl-serine phosphorylation of STAT protein; positive regulation of astrocyte differentiation; stem cell maintenance; positive regulation of peptidyl-serine phosphorylation; positive regulation of peptidyl-tyrosine phosphorylation; positive regulation of tyrosine phosphorylation of Stat1 protein; neuron development; positive regulation of transcription from RNA polymerase II promoter; blood vessel remodeling; immune response; alveolus development; embryo implantation

Research Articles on LIF

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Product Notes

The LIF lif (Catalog #AAA695767) is an Active Protein produced from E Coli and is intended for research purposes only. The product is available for immediate purchase. The Human LIF reacts with Species Reactivity: Human Cross Reactivity: Mouse and may cross-react with other species as described in the data sheet. The amino acid sequence is listed below: SPLPITPVN ATCAIRHPC HNNLMNQIR SQLAQLNGS ANALFILYY TAQGEPFPN NLDKLCGPN VTDFPPFHA NGTEKAKLV ELYRIVVYL GTSLGNITR DQKILNPSA LSLHSKLNA TADILRGLL SNVLCRLCS KYHVGHVDV TYGPDTSGK DVFQKKKLG CQLLGKYKQ IIAVLAQAF. It is sometimes possible for the material contained within the vial of "LIF, Active Protein" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.

Precautions

All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.

Disclaimer

Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.

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