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Promega Corporation

BL21(DE3)pLysS Competent Cells

BL21(DE3)pLysS Competent Cells allow high-efficiency protein expression of any gene that is under the control of a T7 promoter and has a ribosome binding site. BL21(DE3)pLysS is lysogenic for λ-DE3, which contains the T7 bacteriophage gene I, encoding T7 RNA polymerase under the control of the lac UV5 promoter. BL21(DE3)pLysS also contains a plasmid, pLysS, which carries the gene encoding T7 lysozyme. T7 lysozyme lowers the background expression level of target genes under the control of the T7 promoter but does not interfere with the level of expression achieved following induction by IPTG. For researchers doi...

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  • Prices valid for US customers only
Product Size Conc. Catalog # *List Price QTY Add to Cart

Single-Use BL21(DE3)pLysS Competent Cells

1ml
(20 × 50µl)
- L1195 $ 196.00 Add to cart

BL21(DE3)pLysS Competent Cells, >106cfu/μg

1ml
(5 × 200µl)
- L1191 $ 160.00 Add to cart


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