Principle of the Assay: This kit was based on sandwich enzyme-linked immune-sorbent assay technology. Anti-Leptin Receptor polyclonal antibody was pre-coated onto 96-well plates. And the biotin conjugated anti-Leptin Receptor polyclonal antibody was used as detection antibodies. The standards, test samples and biotin conjugated detection antibody were added to the wells subsequently, and wash with wash buffer. Avidin-Biotin-Peroxidase Complex was added and unbound conjugates were washed away with wash buffer. TMB substrates were used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the Leptin Receptor amount of sample captured in plate. Read the O.D. absorbance at 450nm in a microplate reader, and then the concentration of Leptin Receptor can be calculated!!Background/Introduction: Leptin receptor also known as LEP-R is a protein that in humans is encoded by the LEPR gene. It is a member of the gp130 family of cytokine receptors that are known to stimulate gene transcription via activation of cytosolic STAT proteins. The leptin receptor is found in many tissues in several alternatively spliced forms, raising the possibility that leptin exerts effects on many tissues including the hypothalamus. The leptin hormone regulates adipose-tissue mass through hypothalamus effects on fullness and energy use. Variations in the leptin receptor have been associated with obesity and with increased susceptibility to Entamoeba histolytica infections.
NCBI and Uniprot Product Information
Uniprot Description
LCN2: Iron-trafficking protein involved in multiple processes such as apoptosis, innate immunity and renal development. Binds iron through association with 2,5-dihydroxybenzoic acid (2,5- DHBA), a siderophore that shares structural similarities with bacterial enterobactin, and delivers or removes iron from the cell, depending on the context. Iron-bound form (holo-24p3) is internalized following binding to the SLC22A17 (24p3R) receptor, leading to release of iron and subsequent increase of intracellular iron concentration. In contrast, association of the iron-free form (apo-24p3) with the SLC22A17 (24p3R) receptor is followed by association with an intracellular siderophore, iron chelation and iron transfer to the extracellular medium, thereby reducing intracellular iron concentration. Involved in apoptosis due to interleukin-3 (IL3) deprivation: iron-loaded form increases intracellular iron concentration without promoting apoptosis, while iron-free form decreases intracellular iron levels, inducing expression of the proapoptotic protein BCL2L11/BIM, resulting in apoptosis. Involved in innate immunity, possibly by sequestrating iron, leading to limit bacterial growth. Belongs to the calycin superfamily. Lipocalin family. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Secreted, signal peptide; Secreted
Chromosomal Location of Human Ortholog: 9q34
Cellular Component: extracellular space; extracellular region; cytosol
Molecular Function: protein homodimerization activity; protease binding; transporter activity; iron ion binding
Biological Process: response to drug; cellular response to nutrient levels; cellular iron ion homeostasis; response to virus; siderophore transport; positive regulation of cell projection organization and biogenesis; innate immune response; ion transport; response to herbicide; transmembrane transport
Research Articles on LCN2
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Product Notes
The Human LCN2 lcn2 (Catalog #AAA494799) is an ELISA Kit and is intended for research purposes only. The product is available for immediate purchase. The AAA494799 ELISA Kit recognizes Human LCN2. It is sometimes possible for the material contained within the vial of "Lipocalin-2, ELISA Kit" 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
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