Detection of LIF R alpha in D3 Mouse Cell Line by Flow Cytometry. D3 mouse embryonic stem cell line was stained with Rat Anti-Mouse LIF R alpha PE‑conjugated Monoclonal Antibody (Catalog # FAB5990P, filled histogram) or isotype control antibody (Catalog # IC005P, open histogram). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
12 months from date of receipt, 2 to 8 °C as supplied.
Background: LIF R alpha
Leukemia Inhibitory Factor Receptor alpha (LIF R alpha ), also known as LIFR beta and CD118, is a 185-190 kDa type I transmembrane protein that belongs to the Interleukin-6 receptor family. Members of this family mediate the biological effects of Cardiotrophin-1, CLC, CNTF, IL-6, IL-11, IL-27, and Oncostatin M. Mature mouse LIF R alpha consists of a 785 amino acid (aa) extracellular domain (ECD) with two cytokine receptor homology domains, one WSxWS motif, and three fibronectin type III repeats, followed by a 25 aa transmembrane segment and a 239 aa cytoplasmic domain. Within the ECD, mouse LIF R alpha shares 73% and 90% aa sequence identity with human and rat LIF R alpha, respectively. Alternative splicing generates a 90 kDa soluble form of the mouse LIF R alpha ECD. LIF R alpha binds the pleiotropic cytokine LIF with low affinity, and the soluble isoform retains LIF-binding activity. Binding affinity is increased by the ligand-induced association of LIF R alpha with the signal transducing subunit gp130. The LIF R alpha /gp130 receptor complex also transduces Oncostatin M signals, although LIF R alpha alone does not interact with Oncostatin M. gp130 and LIF R alpha also associate with different ligand-specific receptors to form signaling receptor complexes for other IL-6 family ligands such as CNTF, CT-1 and CLC. The CNTF receptor is a ternary complex that contains CNTF R alpha and gp130 as well as LIF R alpha. LIF R alpha is widely expressed, and cells reported to contain LIF R alpha include hepatic sinusoidal endothelium, steroidal adrenal cortical cells, uterine luminal columnar epithelium, cardiac muscle cells, embryonic stem cells, odontoblasts, forebrain neural precursors, fibroblasts (3T3), osteoblasts, megakaryocytes, osteocytes, activated macrophages and sympathetic neurons. LIF induces the proliferation, differentiation, and activation of cells in many tissues. In particular, LIF R alpha plays an important role in several aspects of early pregnancy such as blastocyst implantation in the uterus.
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