For protein expression, EdgeBio offers Ultra BL21 (DE3) Chemically Competent cells which are equivalent to the popular BL21 (DE3) expression strain.  Ultra BL21 cells are manufactured using a proprietary technology that makes the cells highly efficient for DNA uptake.  The lack of ompT and lon proteases improves the stability of synthesized proteins resulting in a high level of expression.

• Guaranteed Transformation Efficiencies – ≥ 2x10⁸ cfu/µg pUC19
• High Level of Protein Expression – Lack of ompT and Ion proteases improves the stability of synthesized proteins
• Express Toxic Proteins – Also available in a pLysS version
• Convenient – Cells are packaged in single use tubes