Library Efficiency® DH5α™ Competent Cells are a versatile strain of chemically competent cells that demonstrate transformation efficiencies of >1 x 108 cfu/µg plasmid DNA. Library Efficiency® DH5α™ Competent Cells are ideal for difficult cloning constructions or any application that uses limiting amounts of DNA. Features of these cells:
• Supports blue/white screening by α-complementation on plates containing X-Gal or Bluo-Gal • Maintains plasmid DNA with minimum recombination events • Delivers high-yield plasmid preparations for downstream applications • M13mp cloning vectors may be propagated on a lawn of DH5α-FT™, DH5αF'™, DH5αF'IQ™, JM101, or JM107 for plaque formation
Ideal for difficult cloning projects Library Efficiency® DH5α™ Competent Cells are recommended for routine cloning of genes into large plasmids, and are suitable for difficult clone constructions, such as blunt-end ligations. Library Efficiency® DH5α™ Competent Cells have a mid-range transformation efficiency (>1 x 108 cfu/µg control DNA per 100 µL reaction). The strain also has the Φ80lacZΔM15 genotype, allowing blue/white screening on plates containing either X-Gal or Bluo-Gal. Finally, the recA1 mutation helps reduce the rate of recombination while propagating plasmid DNA, and the endA1 mutation makes DH10B™ cells an excellent choice for amplifying plasmid DNA for subsequent extraction and purification.