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OverExpress™ C41(DE3) and C43(DE3) Competent Cells

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Product Description Size Cat. No. Price Quantity BUY
OverExpress C41(DE3) Chemically Competent Cells  12 rxns (SOLOs) 60442-1 $235.00
   24 rxns (SOLOs) 60442-2 $416.00
OverExpress C41(DE3) pLysS Chemically Competent Cells  12 rxns (SOLOs) 60444-1 $235.00
   24 rxns (SOLOs) 60444-2 $416.00
OverExpress C43(DE3) Chemically Competent Cells  12 rxns (SOLOs) 60446-1 $235.00
   24 rxns (SOLOs) 60446-2 $416.00
OverExpress C43(DE3) pLysS Chemically Competent Cells  12 rxns (SOLOs) 60448-1 $235.00
   24 rxns (SOLOs) 60448-2 $416.00
OverExpress ChemComboPack
(3 rxns each of the above four strains)
  12 rxns (SOLOs) 60452-1 $235.00
OverExpress C41(DE3) Electrocompetent Cells  12 rxns (SOLOs) 60341-1 $283.00
   24 rxns (SOLOs) 60341-2 $498.00
OverExpress C43(DE3) Electrocompetent Cells  12 rxns (SOLOs) 60345-1 $283.00
   24 rxns (SOLOs) 60345-2 $498.00
Expression Recovery Medium (lactose minus)  8 × 12 ml 80030-1 $107.00
ORDER INFORMATION
Each OverExpress kit contains Electrocompetent or Chemically Competent Cells in SOLO packaging (1 transformation per tube), Expression Recovery Medium (lactose minus), pUC19 Positive Control Plasmid, pAVD10 Verification Plasmid, and complete protocols. ComboPacks contain 3 reactions each of chemically competent C41(DE3), C43(DE3), C41(DE)pLysS, and C43(DE3)pLysS.

OverExpress Genotypes
OverExpress C41(DE3): F – ompT hsdSB (rB- mB-) gal dcm (DE3)
OverExpress C41(DE3)pLysS: F – ompT hsdSB (rB- mB-) gal dcm (DE3) pLysS (CmR)
OverExpress C43(DE3): F – ompT hsdSB (rB- mB-) gal dcm (DE3)
OverExpress C43(DE3)pLysS: F – ompT hsdSB (rB- mB-) gal dcm (DE3) pLysS (CmR)


Table 1. OverExpress Transformation Efficiencies

Electrocompetent Cells
cfu/µg DNA
C41(DE3)
> 1 × 109
C43(DE3)
> 1 × 109
Chemically Competent Cells
C41(DE3)
> 1 × 106
C41(DE3)pLysS
> 1 × 106
C43(DE3)
> 1 × 106
C43(DE3)pLysS
> 1 × 106
Document File Name Type
Product Flyer F304-US032016-OverExpress PDF

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"Your OverExpress C41(DE3) cells express at least 2x the level of other engineered BL21s with my minimally toxic proteins, and many fold higher levels with my more toxic proteins."
- Kevin Glenn, M.D. Assistant Professor of Internal Medicine, University Iowa

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