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L1670-16 Leptin, Recombinant, Rat (Obese Protein, Obesity Factor) CAS:

Specifications
References
Grade
Highly Purified
Swiss Prot
P50596
Accession Number
NP_037208.1
Molecular Weight
16.2
EU Commodity Code
30021019
Shipping Temp
Blue Ice
Storage Temp
-20°C

Encoded by the ob (obese) gene, Leptin is an adipose-derived cytokine that suppresses appetite and increases thermogenesis. Leptin exerts its anorectic effect via signaling through a hypothalamic receptor termed OB-R. Leptin has been shown to reduce body weight, food consumption, and plasma glucose levels in various in vivo models.

Recombinant protein corresponding to rat Leptin containing 147 amino acid residues, expressed in E. coli. Uniprot/Swiss Accession: P50596
Amino Acid Sequence
MVPIHKVQDD TKTLIKTIVT RINDISHTQS VSARQRVTGL DFIPGLHPIL SLSKMDQTLA VYQQILTSLP SQNVLQIAHD LENLRDLLHL LAFSKSCSLP QTRGLQKPES LDGVLEASLY STEVVALSRL QGSLQDILQQ LDLSPEC
Biological Activity
Determined by an in vivo assay using the ob/ob mouse obesity model and NZO. Both strains of mice were treated via intraperitoneal injection once daily at a dose of 5µg leptin/gm of body weight for 7 days. Significant effects on body weight, food consumption, and plasma glucose levels were observed compared to saline-treated controls.
Storage and Stability
Lyophilized and reconstituted products are stable for 6 months after receipt at -20°C. Reconstitute with sterile sterile dH2O with 0.1% HSA or BSA. Aliquot to avoid repeated freezing and thawing. Store 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.
Source
Recombinant, E. coli
Form
Supplied as a lyophilized powder. Reconstitute with sterile dH2O to a concentration of 0.1-1mg/ml.
Important Note
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
References
1. Zhang, Y., et al., Nature 372: 425-431 (1994). 2. Pelleymounter, M.A., et al., Science 269: 540 (1995).
USBio References
No references available
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