- SynonymLIFR,CD118,FLJ98106,FLJ99923,SJS2,STWS,SWS
- SourceHuman LIF R, Fc Tag (LIR-H4252) is expressed from human 293 cells (HEK293). It contains AA Gln 45 - Ser 833 (Accession # P42702-1).Predicted N-terminus: Gln 45Request for sequence
- Molecular Characterization
This protein carries a human IgG1 Fc tag at the C-terminus.
The protein has a calculated MW of 115.5 kDa. The protein migrates as 140-190 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
- EndotoxinLess than 1.0 EU per μg by the LAL method.
- Purity
>95% as determined by SDS-PAGE.
- Formulation
Lyophilized from 0.22 μm filtered solution in Tris with Glycine, Arginine and NaCl, pH7.5. Normally trehalose is added as protectant before lyophilization.
Contact us for customized product form or formulation.
- Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
- Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
Human LIF R, Fc Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.
Immobilized ActiveMax® Human LIF, Tag Free (Cat. No. LIF-H521b) at 0.2 μg/mL (100 μL/well) can bind Human LIF R, Fc Tag (Cat. No. LIR-H4252) with a linear range of 4-125 ng/mL (QC tested).
- BackgroundLeukemia inhibitory factor receptor is also known as LIFR; CD118; FLJ98106; FLJ99923; LIF-R; SJS2; STWS; SWS, is the receptor for leukemia inhibitory factor (LIF). The leukemia inhibitory factor is a polyfunctional cytokine that affects the differentiation, survival, and proliferation of a wide variety of cells in the adult and the embryo. LIF action appears to be mediated through a high-affinity receptor complex composed of a low-affinity LIF binding chain (LIF receptor) and a high-affinity converter subunit, gp130. Both LIFR and gp130 are members of a family of cytokine receptors that includes components of the receptors for the majority of hematopoietic cytokines and for cytokines that affect other systems, including the ciliary neurotrophic factor, growth hormone and prolactin Defects in LIFR are the cause of Stueve-Wiedemann syndrome (SWS), a severe autosomal recessive condition and belongs to the group of the bent-bone dysplasias.
- References
- (1)Timmermann, Andreas, et al. 2002, Eur. J. Biochem. (Germany) 269 (11): 2716–26.
- (2)Gearing, D.P. et al.,1991, EMBO J. 10 (10): 2839-2848.
- (3)Gearing, D.P. et al.,1992, New Biol. 4 (1): 61-65.
- (4)Mosley, B. et al.,1996, J. Biol. Chem. 271 (51): 32635-32643.
- (5)Lass, A. et al.,2002, Fertil. Steril. 76 (6): 1091-1096.
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