Recombinant Mouse Leptin/OB Animal-Free Protein

SDS-Page: Recombinant Mouse Leptin/OB Animal-Free Protein [NBP2-76266] - 1 ug in each lane (-) non-reducing conditions and (+) reducing conditions in a 4-20% Tris-Glycine gel.

Bioactivity: Recombinant Mouse Leptin/OB Animal-Free Protein [NBP2-76266] - Leptin/OB induced proliferation of Baf/3 cells.

• Reactivity: Mu
• Applications: PAGE, Bioactivity
• Format: Animal Free
• Concentration: LYOPH

Recombinant Mouse Leptin/OB Animal-Free Protein Summary

• Description: An un-tagged recombinant protein corresponding to Mouse Leptin/OB
  
  

  Source: E. coli

  Amino Acid Sequence: MVPIQKVQDD TKTLIKTIVT RINDISHTQS VSAKQRVTGL DFIPGLHPIL SLSKMDQTLA VYQQVLTSLP SQNVLQIAND LENLRDLLHL LAFSKSCSLP QTSGLQKPES LDGVLEASLY STEVVALSRL QGSLQDILQQ LDVSPEC

  Produced with no materials of animal or human origin using ANIMAL-FREE purification processes.

  Production and Purification

  • No animal-derived ingredients, No FBS
  • E. coli based production system
  • Animal-Free facility, fermentor, columns, filters, labware, lyophilization, and storage
  
  

  Quality Assurance

  • Endotoxin levels at <1 EUs/ug
  • Purity levels at 95% or greater
• Specificity: Leptin/OB is a monomer, 16.1 kDa (147 aa)
• Preparation Method: Protein is derived from genetically modified E. coli.
• Details of Functionality: Bioactive protein but no acceptance criteria limits established
• Source: E. coli
• Protein/Peptide Type: Recombinant Protein
• Gene: LEP
• Purity: >95%, by SDS-PAGE
• Endotoxin Note: Acceptance criteria for endotoxin levels are <1 EUs/ug protein (determined by Kinetic LAL Method).

Applications/Dilutions

• Dilutions:
  • Bioactivity
  • SDS-Page
• Theoretical MW: 16.1 kDa.
  Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

• Storage: Store at -20 to -70C as supplied. After reconstitution, store at 2 to 8C for 1 month and at -20 to -70C for long term storage. Avoid repeated freeze-thaw cycles.
• Buffer: Lyophilized from a sterile (0.2 micron) filtered aqueous solution containing 10 mM sodium phosphate, pH 7.5
• Preservative: No Preservative
• Concentration: LYOPH
• Purity: >95%, by SDS-PAGE
• Reconstitution Instructions: Sterile water at 0.1 mg/mL

Notes

Lot Specific Information:
Given endotoxin and ED50 values are acceptance criteria standards. For lot specific values, please contact technical support.

Detailed Reconstitution:
Centrifuge vial before opening. Suspend the product by gently pipetting the recommended solution down the sides of the vial. DO NOT VORTEX. Allow several minutes for complete reconstitution. For prolonged storage, dilute to working aliquots.

Expiration Date:
12 months from date of receipt when stored at -20C to-80C as supplied. 1 month when stored at 4C after reconstituting as directed. 3 months when stored at -20C to -80C after reconstituting as directed.

Alternate Names for Recombinant Mouse Leptin/OB Animal-Free Protein

• FLJ94114
• LEP
• leptin (murine obesity homolog)
• leptin (obesity homolog, mouse)
• Leptin
• OB
• Obese protein
• obese, mouse, homolog of
• Obesity factor
• OBOBS

Background

Leptin, the obese (ob) gene product, is a small protein expressed in and secreted from adipose tissue of normal rodents. Studies suggest leptin acts as a circulating hormone capable of regulating body-weight homeostasis and energy balance. One possible target tissue for leptin is the hypothalamus, a proposed control center for satiety and energy expenditure. Ob gene knockout mice are characterized by several metabolic abnormalities including hyperglucocorticoidemia, hyperinsulinemia and insulin resistance, hyperglycemia, altered central nervous system activity, reduced metabolic rate of brown adipose tissue, and a large increase in white adipose tissue. Studies show that the administration of recombinant leptin to ob knockout mice reduces food intake and increases energy expenditure.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. This product is guaranteed for 1 year from date of receipt.

Bioinformatics

• Gene Symbol: LEP