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Recombinant Human Leptin

Cat.No.: C067

Recombinant Human Leptin
Description
Recombinant Human Leptin is produced by our E.coli expression system and the target gene encoding Val22-Cys167 is expressed.
Accession #:P41159
Known as:Leptin; Obese Protein; Obesity Factor; LEP; OB; OBS
Formulation
Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.4.
Quality Control
Purity:Greater than 95% as determined by reducing SDS-PAGE.
BioActivity:Immobilized Human Leptin (Cat#C067) at 10μg/ml (100 μl/well) can bind Human CD295-His (Cat#CU14).
Endotoxin:Less than 0.1 ng/?g (1 EU/?g)
Reconstitution
Always centrifuge tubes before opening. Do not mix by vortex or pipetting.
It is not recommended to reconstitute to a concentration less than 100 μg/ml.
Dissolve the lyophilized protein in ddH2O.
Please aliquot the reconstituted solution to
Storage
Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks.
Reconstituted protein solution can be stored at 4-7°C for 2-7 days.
Aliquots of reconstituted samples are stable at < -20°C for 3 months.
Background
Leptin is a hormone secreted from white adipocytes and plays important role in the regulation of food intake and energy balance. Leptin functions via signaling pathways involving OB-R in hypothalamus. Animal models have revealed the influence of Leptin in reducing body weight and regulating blood glucose level. When mutations are introduced in obese gene, mice with impaired function of leptin are massively obese and in high risk of diabetes. Leptin deficiency reduces metablic rate. Leptin deficient mice are less active and with lower body temperature than normal animals. Human Leptin shares approximately 84% sequence identity with the mouse protein. Human Leptin consists of 167 amino acid residue including a 21 amino acid residue signal sequence and 146 amino acid residue mature protein sequence.

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