Human Leptin antagonist (mutant L39A/D40A/F41A)
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| Cat-Nr. | 500-041 |
| Size | 100 µg |
| Price | 230 € |
| Source | E. coli |
| Formulation | lyophilized |
| Purity Confirmation | > 98.0% as determined by Gel filtration and SDS-PAGE gel. |
| Length [aa] | 146 |
| Molecular Weight | 16.0 kDa |
| N Terminal Sequence | AVPIQ |
| Endotoxin Levels | < 0.1 ng/µg of protein (<1EU/µg) |
| Biological Activity | Recombinant human leptin 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. |
| Species Reactivity | Human |
| Reconstitution | It is recommended to reconstitute the lyophilized recombinant human leptin antagonist in sterile 0.4% NaHCO3 adjusted, not less than 100µg/ml, which can then be further diluted to other aqueous solutions preferably in presence of carrier protein. |
| Synonyms | Lep; ob; obese |
| Description | Recombinant human leptin is one polypeptide chain containing 146 amino and additional Ala at N-terminus acids and having a molecular mass of ~ 16 kDa. Recombinant human leptin was mutated, resulting in L39A/D40A/F41A mutant that was purified by proprietary chromatographic techniques. Preparation of leptin antagonists was recently published in Biochemical Journal (Niv-Spector et al, Biochem. J 291;221-230 (2005). |
| Protein Sequence | AVPIQKVQDDTKTLIKTIVTRINDISHTQSVSSKQKVTGAAAIPGLHPILTLSKMDQTLAVYQQILTSMPSRNVIQISNDLENLRDLLHVLAFSKSCHLPWASGLETLDSLGGVLEASGYSTEVVALSRLQGSLQDMLWQLDLSPGC |
| Uniprot ID | P41159 |
| Protein RefSeq | NP_000221.1 |
| mRNA RefSeq | NM_000230 |
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