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BIOSEARCH TECHNOLOGIES INC E. cloni EXPRESS BL21(DE3) Electrocompetent Cells, 12 RxnsGet better colony counts for routine protein expression with any E. coli T7 expression vector, with this high-efficiency BL21(DE3) strain.
LucigensE. cloniEXPRESS BL21(DE3) Electrocompetent Cells are the first to offer high efficiency cloning and high level protein expression in the same cell. Cloning efficiencies are increased 25-1,000 fold relative to competitors preparations of BL21 cells, which is essential for construction of complex expression libraries. The unprecedented transformation efficiency ofE. cloniEXPRESS Electrocompetent Cells (>5 10^9cfu/g) eliminates the need for plasmid transfer from the cloning strain to the expression strain, saving days of work in a typical cloning and expression experiment. E. cloni EXPRESS cells are also available as chemically competent cells. With a transformation efficiency of >1 10^7 cfu/g and very economical prices, EXPRESS Chemically Competent Cells offer superior value for everyday protein expression work.
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