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Recombinant Human Leptin
Description
Images & Validation
−Key Properties
−| Source | Escherichia coli |
|---|---|
| Expression System | Escherichia coli |
| Biological Activity | Fully biologically active when compared to standard. The ED50 as determined by a chemotaxis bioassay using human Leptin R transfected BaF3 murine proB cells is less than 2 ng/ml, corresponding to a specific activity of > 5.0 x105 IU/mg. |
| Molecular Weight | Approximately 16.0 kDa, a single non-glycosylated polypeptide chain containing 146 amino acids. |
| Protein Sequence | VPIQKVQDDT KTLIKTIVTR INDISHTQSV SSKQKVTGLD FIPGLHPILT LSKMDQTLAV YQQILTSMPS RNVIQISNDL ENLRDLLHVL AFSKSCHLPW ASGLETLDSL GGVLEASGYS TEVVALSRLQ GSLQDMLWQL DLSPGC |
| Purity | > 97 % by SDS-PAGE and HPLC analyses. |
| Endotoxins | Less than 1 EU/ugof rHuLeptin as determined by LAL method. |
Storage & Handling
−| Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.- 12 months from date of receipt, -20 to -70 °C as supplied.- 1 month, 2 to 8 °C under sterile conditions after reconstitution.- 3 months, -20 to -70 °C under sterile conditions after reconstitution. |
|---|---|
| Form/Appearance | Lyophilized from a 0.2 μm filtered concentrated solution in 50 mm PB, pH 3.5, with 0.02 % Tween-20. |
| Disclaimer | For research use only |
Alternative Names
−Similar Products
−Human LEPR [orb2994133]
Unconjugated
SDS-PAGE: Greater than 95% as determined by reducing SDS-PAGE.
Predicted: 94.9 KDa. Observed: 100-130 KDa, reducing conditions
10 μg, 50 μg, 500 μg, 1 mgMouse LEPR [orb2993730]
Unconjugated
SDS-PAGE: Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
Predicted: 119.1 KDa. Observed: 130-190 KDa, reducing conditions
10 μg, 50 μg, 500 μg, 1 mgHuman LEPR [orb2993731]
Unconjugated
SDS-PAGE: Greater than 90% as determined by reducing SDS-PAGE. (QC verified)
Predicted: 120.4 KDa. Observed: 150-180 KDa, reducing conditions
10 μg, 50 μg, 500 μg, 1 mgHuman Leptin [orb3002363]
SDS-PAGE: Greater than 95% as determined by reducing SDS-PAGE.
Predicted: 16.1 KDa. Observed: 14 KDa, reducing conditions
10 μg, 50 μg, 500 μg, 1 mg

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Protocol Information
Recombinant Human Leptin (orb1905976)
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