Competent E.coli Cells

Competent E.coli cells are essential reagents for molecular cloning, DNA library construction, phage display, recombinant protein expression, and site-directed mutagenesis.

Amid Biosciences provides a comprehensive selection of high-efficiency chemically competent cells and electrocompetent cells tailored for specialized research applications:

  • Cloning & Subcloning: High-efficiency AB 5-alpha and DH10B cells optimized for large plasmids and library generation.
  • Recombinant Protein Expression: Standard BL21(DE3), alongside specialized strains like BL21(lambdaDE3)pBirA for in vivo biotinylation, and BL21(DE3)pLPP for producing non-phosphorylated proteins.
  • Phage Display Libraries: High-titer ER2738, SS320, and TG1 competent cells optimized for robust peptide and antibody fragment display.

All products are For Research Use Only (RUO) and manufactured to ensure optimal transformation efficiencies for critical workflows. 

Domestic Shipping in the US

Temperature sensitive products requiring shipping/handling on dry ice are shipped via UPS Next Day Air Saver. These products are delivered the next day if your order is placed before 3 PM PST. A dry ice surcharge is included in the shipping cost at checkout. For orders totaling over $1,000, free shipping and handling will be applied to the order.