LIFR Protein, Rat, Recombinant (His Tag)

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LIFR Protein, Rat, Recombinant (His Tag): Product Information

Purity
> 95 % as determined by SDS-PAGE
Endotoxin
< 1.0 EU per μg of the protein as determined by the LAL method
Activity
1. Measured by its ability to bind mouse LIF-Fc (Cat:50755-M02H) in a functional ELISA.
2. Measured by its ability to inhibit the recombinant human LIF mediated inhibition in the M1 mouse myeloid leukemia cells. The ED50 for this effect is typically 8-40 ng/mL in the presence of 2 ng/mL recombinant human LIF.
Protein Construction
A DNA sequence encoding the rat LIFR (G3V7K2) (Met1-Ser829) was expressed with a polyhistidine tag at the C-terminus.
Accession#
Expressed Host
HEK293 Cells
Species
Rat
Predicted N Terminal
Leu 44
Molecule Mass
The recombinant rat LIFR comprises 797 amino acids and predicts a molecular mass of 90 kDa. The apparent molecular mass of the recombinant protein is approximately 116 kDa in SDS-PAGE under reducing conditions due to glycosylation.
Formulation
Lyophilized from sterile PBS, pH 7.4
1. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Please refer to the specific buffer information in the hard copy of CoA.
Shipping
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Stability & Storage
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

LIFR Protein, Rat, Recombinant (His Tag): Images

LIFR Background Information

LIFR (leukemia inhibitory factor receptor) belongs to the family of cytokine receptors. LIFR forms a high-affinity receptor complex with gp13, which mediates the activity of LIF (leukemia inhibitory factor) and thus affects the differentiation, proliferation, and survival of a wide variety of cells in the adult and the embryo. Besides LIF, LIFR can also bind to and activate CNTF (ciliary neurotrophic factor) and CLC (cardiotrophin like cytokine). Evidence showed that in the retina, LIFR activating LIF, CT-1 and cardiotrophin like cytokine (CLC) are strongly upregulated in response to preconditioning with bright cyclic light leading to robust activation of signal transducer and activator of transcription-3 (STAT3) in a time-dependent manner. Further, blocking LIFR activation during preconditioning using a LIFR antagonist (LIF5) attenuated the induced STAT3 activation and also resulted in reduced preconditioning-induced protection of the retinal photoreceptors. These data demonstrate that LIFR and its ligands play an essential role in endogenous neuroprotective mechanisms triggered by preconditioning-induced stress. LIFR was newly found to be a suppressor of hepatocellular carcinoma (HCC), one of the world's top five causes of cancer-related deaths.
Full Name
leukemia inhibitory factor receptor alpha
References
  • Gearing, D.P. et al.,1991, EMBO J. 10 (10): 2839-2848.
  • Gearing, D.P. et al.,1992, New Biol. 4 (1): 61-65.
  • Mosley, B. et al.,1996, J. Biol. Chem. 271 (51): 32635-32643.
  • Timmermann, A. et al.,2002, Eur. J. Biochem. 269 (11): 2716-2726.
  • Lass, A. et al.,2002, Fertil. Steril. 76 (6): 1091-1096.
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