Recombinant Human LEPR Protein (His Tag)

Specifications

Catalog number

PDMH100253-01

Size / count

20 µg

Dry ice

No

Hazardous

No

Discontinued

No

Background

Leptin Receptor or CD295 belongs to the gp130 family of cytokine receptors that are known to stimulate gene transcription via activation of cytosolic STAT proteins. This protein is a receptor for leptin (an adipocyte-specific hormone that regulates body weight) and is involved in the regulation of fat metabolism, as well as in a novel hematopoietic pathway that is required for normal lymphopoiesis. Leptin Receptor/CD295 is transmembrane catalytic receptors found on NPY/AgRP and alpha-MSH/CART neurons in hypothalamic nuclei. Leptin receptors (Ob-Rs) are coded for by one human gene that produces six different isoforms, Ob-Ra-Ob-Rf. Ob-Rs exist as constitutive dimers at physiological expression levels. Only the Ob-Rb isoform can transduce intracellular signals and does so through activation of the JAK2/STAT3, PI 3-K, and MAPK signaling cascades. Activation of Ob-Rs mediates transcriptional regulation of the hypothalamic melanocortin pathway and downregulates endocannabinoid expression. Leptin acts via leptin receptors. Leptin resistance has been proposed as a pathophysiological mechanism of obesity. In obese individuals, Ob-Ra (which is involved in the active transport of leptin across the blood-brain barrier) expression is downregulated and the individual may be unresponsive to leptin signals. Ob-R antagonists are of great interest in the development of pharmacological treatments for obesity. Mutations in the Leptin Receptor/CD295 have been associated with an obesity and pituitary dysfunction.

Abbreviation

LEPR

Synonyms

CD 295; CD295; CD295 antigen; Db; Fa; HuB219; LEP R; LEP-R; LEPR; LEPR; LEPRD; Leptin receptor; Leptin receptor fatty; Leptin receptor gene related protein; Leptin receptor precursor; Leptin receptor precursor; OB R gene related protein; OB receptor; OB-R; OB-RGRP; obl; Obr

UniProt

P48357-1

Accession Number

P48357-1

Expression System

Stable cell line

Tag

C-His

Sequence

Phe22-Asp839

Field of Research

Cancer; Cardiovascular; Metabolism; Signal Transduction

Endotoxin

< 1.0 EU/mg of the protein as determined by the LAL method.

Purity

> 90% as determined by reducing SDS-PAGE.

Bioactivity

Not validated for activity

Reconstitution

It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis.

Shipping Conditions

This product is provided as lyophilized powder which is shipped with ice packs.

Storage Conditions

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

Calculated Molecular Weight

89.8 kDa

Observed Molecular Weight

100-120 kDa

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with 5% Trehalose and 5% Mannitol.

Species

Human