GenElute™ Plasmid Midiprep Kit

Description

• General description: The GenElute Plasmid Midiprep Kit offers a simple, rapid, cost-effective method for isolating plasmid DNA from recombinant E. coli cultures. By combining silica- binding technology and the convenience of a spin column format, up to 300 μg of plasmid DNA can be recovered from 20-40 ml of Luria Broth (LB) in about 45 minutes. Note that actual yield and optimal volume of culture to use depend on the plasmid and the culture medium.An overnight recombinant E. coli culture is harvested by centrifugation and subjected to a modified alkaline-SDS lysis procedure followed by adsorption of the DNA onto silica in the presence of high salts. Contaminants are then removed by a spin-wash step. Finally, the bound DNA is eluted in water or Tris-EDTA buffer.
• Application: The DNA is ready for immediate use in such downstream applications as restriction enzyme digestion, cloning, PCR, transcription and automated sequencing.
• Other Notes: GenElute Plasmid Midi- and Maxiprep Kits offer a simple, rapid and cost-effective method for isolating plasmid DNA from E. coli cultures. These kits combine silica-based membrane technology with the convenience of a spin column format and deliver up to 350 μg (Midi) and 1.2 mg (Maxi) yield of high-copy plasmid DNA.
• Principle: Bacterial cells are harvested via centrifugation and subjected to a modified alkaline-SDS lysis procedure followed by adsorbtion of DNA onto silca in the presence of high salts. Contaminants are then removed by a simple wash step. Finally, the bound DNA is eluted in water or Tris-EDTA buffer. The recovered plasmid DNA is predominately in its supercoiled form. There is no visual evidence of genomic DNA or RNA contamination.
• Legal Information: GenElute is a trademark of Sigma-Aldrich Co. LLC