Leptin, Triple Antagonist, Recombinant, Mouse (Ob, Obese Protein, Obesity Factor)
Catalog No : USB-L1670-16H
377.02€
0.00€
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| Product name | Leptin, Triple Antagonist, Recombinant, Mouse (Ob, Obese Protein, Obesity Factor) | ||
|---|---|---|---|
| Catalog No | USB-L1670-16H | ||
| Supplier’s Catalog No | L1670-16H | ||
| Supplier | US Biologicals | ||
| Source antigen | Recombinant, E. coli | ||
| Reactivity | |||
| Cross reactivity | |||
| Applications | |||
| Molecular weight | 16 | ||
| Storage | -20°C | ||
|---|---|---|---|
| Other names | |||
| Grade | Highly Purified | ||
| Purity | Purified by proprietary chromatographic techniques. ≥ 98.0% as determined by: (a) Gel filtration analysis. (b) Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel. | ||
| Form | Supplied as a sterile-filtered, lyophilized powder in 0.003mM NaHCO3. | ||
| Reactivity life | 6 months | ||
| Note | For reserch purpose only | ||
| Purity | Purified by proprietary chromatographic techniques. ≥ 98.0% as determined by: (a) Gel filtration analysis. (b) Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel. | ||
| Description | Leptin inhibits food intake and stimulates energy expenditure. Leptin also has thermogenic actions and regulates enzymes of fatty acid oxidation. Severe hereditary obesity in rodents and humans is caused by defects in leptin production. In addition to its critical role in the physiologic regulation of body weight leptin has a variety of other physiologic and pathologic functions resembling those of cytokines. These functions include the regulation of hematopoiesis, angiogenesis, wound healing, inflammation, and immune responses. Recombinant mouse leptin, one polypeptide chain containing 146aa and additional Ala at the N-terminus and having a molecular mass of ~16kD. mLEP was mutated, resulting in the L39A/D40A/F41A mutant. Amino Acid Sequence: The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Val-Pro-Ile-Gln Dimers and Aggregates: The purified mLEP triple antagonist (16K) consists of > 99% monomers as determined by gel-filtration chromatography. Biological Activity: Murine LEP triple antagonist is capable of inhibiting leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. It also inhibits various leptin effects in several in vitro bioassays. Endotoxin: Less than 0.1ng/ug (IEU/ug) of mLEP triple antagonist Protein Content: Protein quantization was carried out by UV spectroscopy at 280nm using the absorbency value of 0.21 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics). Solubility: It is recommended to reconstitute the lyophilized mLEP mutant in sterile water or sterile 0.4% NaHCO3 adjusted to pH 8-9, not less than 100ug/ml, which can then be further diluted with other aqueous solutions. Storage and Stability: Lyophilized powder may be stored at 4°C for short-term only. Reconstitute to nominal volume by adding sterile dH2O and store at -20°C. Reconstituted product is stable for 12 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. | ||
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