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Categories: Peptides & Proteins / Proteins

Product name			Leptin, Recombinant, Rat (LEP, Ob, Obesity Factor)
Catalog No			USB-L1670-10R
Supplier’s Catalog No			L1670-10R
Supplier			US Biologicals
Source antigen			Recombinant, E. coli
Reactivity
Cross reactivity
Applications
Molecular weight			16.2

Storage			-20°C
Other names
Grade			Highly Purified
Purity			~95% (SDS-PAGE and HPLC). Endotoxin: ≤0.1ng/ug.
Form			Supplied as a lyophilized powder from 15mM sodium bicarbonate. Reconstitute with sterile dH2O to 0.1-1mg/ml. For long-term storage add a carrier protein (0.1% HSA or BSA).
Reactivity life			6 months
Note			For reserch purpose only
Purity			~95% (SDS-PAGE and HPLC). Endotoxin: ≤0.1ng/ug.
Description			Leptin (Anti-Obesity Protein) is the protein product of the ob (obese) gene in mice and seems to be involved in appetite control. The ob gene is expressed in adipose tissue and is thought to regulate the body’s fat stores. Mice with the ob/ob genotype also develop a form of diabetes similar to type II (non-insulin dependent) diabetes. Rat Leptin is a 16.2kD protein containing 147 amino acid residues. Source: Recombinant rat Leptin expressed in E. coli. Biological Activity: The ED50 determined by the leptin-dependent stimulation of human OB-R transfected murine BaF3 indicator cells is 0.35-0.06ng/ml. Storage and Stability: Lyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile ddH2O. For long-term storage add a carrier protein (0.1% HSA or BSA). Aliquot to avoid repeated freezing and thawing. Store at -20°C. Reconstituted product is stable for 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.