Invitrogen™ One Shot™ BL21(DE3) Chemically Competent E. coli
On demand
Order number :
C600003
Invitrogen™ One Shot™ BL21(DE3) Chemically Competent E. coli
One Shot® BL21(DE3) Chemically Competent E. coli are ideal for use with bacteriophage T7 promoter-based expression systems (e.g., pRSET, pCR™T7, and pET). BL21(DE3) cells carry the lambda DE3 lysogen. Recombinant proteins that are nontoxic to E. coli are generally expressed at higher levels in BL21(DE3) cells than in BL21(DE3)pLysS or BL21(DE3)pLysE. However, the basal expression levels of heterologous genes are significantly higher in BL21(DE3) than in BL21(DE3)pLysS or BL21(DE3)pLysE.
Contents
- One Shot™ BL21(DE3) E.coli: 20 vials, 50 µl each (total of 1 ml)
- pUC19 DNA (10 pg/ul): 1 vial, 50 µl
- SOC Medium: 1 bottle, 6 ml
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