Recombinant Human Leptin Receptor protein
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Recombinant Human Leptin Receptor protein is a Human Fragment protein, in the 22 to 839 aa range, expressed in CHO cells, with >98%, suitable for HPLC, SDS-PAGE.
View Alternative Names
CD295, DB, OBR, LEPR, Leptin receptor, LEP-R, HuB219, OB receptor, OB-R
Complementary Products
Reactivity data
Product details
Sequence info
Properties and storage information
Shipped at conditions
Appropriate short-term storage duration
Appropriate short-term storage conditions
Appropriate long-term storage conditions
Aliquoting information
Storage information
Supplementary information
This supplementary information is collated from multiple sources and compiled automatically.
Biological function summary
The Leptin Receptor acts as a gateway for leptin to exert its effects on the central nervous system and peripheral tissues. When leptin binds to LEPR it facilitates the formation of receptor complexes that engage downstream signaling molecules like STAT3 and MAPK. This results in regulation of appetite and energy expenditure. LEPR is not part of a complex with other receptors but it interacts with intracellular signaling proteins to mediate leptin's physiological effects.
Pathways
The Leptin Receptor is integral to the JAK-STAT signaling pathway and the MAPK pathway both of which are important in maintaining energy balance. LEPR activates JAK2 upon ligand binding leading to phosphorylation events that propagate the signal. It is closely associated with other proteins like SOCS3 which acts as a feedback inhibitor of leptin signaling playing a balancing role in the pathways mentioned.
Specifications
Form
Lyophilized
Additional notes
>98 % by HPLC.
General info
Function
Receptor for hormone LEP/leptin (Probable) (PubMed : 22405007). On ligand binding, mediates LEP central and peripheral effects through the activation of different signaling pathways such as JAK2/STAT3 and MAPK cascade/FOS. In the hypothalamus, LEP acts as an appetite-regulating factor that induces a decrease in food intake and an increase in energy consumption by inducing anorexinogenic factors and suppressing orexigenic neuropeptides, also regulates bone mass and secretion of hypothalamo-pituitary-adrenal hormones (By similarity) (PubMed : 9537324). In the periphery, increases basal metabolism, influences reproductive function, regulates pancreatic beta-cell function and insulin secretion, is pro-angiogenic and affects innate and adaptive immunity (PubMed : 12504075, PubMed : 25060689, PubMed : 8805376). Control of energy homeostasis and melanocortin production (stimulation of POMC and full repression of AgRP transcription) is mediated by STAT3 signaling, whereas distinct signals regulate NPY and the control of fertility, growth and glucose homeostasis. Involved in the regulation of counter-regulatory response to hypoglycemia by inhibiting neurons of the parabrachial nucleus. Has a specific effect on T lymphocyte responses, differentially regulating the proliferation of naive and memory T -ells. Leptin increases Th1 and suppresses Th2 cytokine production (By similarity).. Isoform A. May transport LEP across the blood-brain barrier. Binds LEP and mediates LEP endocytosis. Does not induce phosphorylation of and activate STAT3.. Isoform E. Antagonizes Isoform A and isoform B-mediated LEP binding and endocytosis.
Sequence similarities
Belongs to the type I cytokine receptor family. Type 2 subfamily.
Post-translational modifications
On ligand binding, phosphorylated on two conserved C-terminal tyrosine residues (isoform B only) by JAK2. Tyr-986 is required for complete binding and activation of PTPN11, ERK/FOS activation,for interaction with SOCS3 and SOCS3 mediated inhibition of leptin signaling. Phosphorylation on Tyr-1141 is required for STAT3 binding/activation. Phosphorylation of Tyr-1079 has a more accessory role.
Target data
Product promise
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