BL21(DE3)pLysS Singles™ Competent Cells
BL21 strains are the most widely used hosts for protein expression from pET recombinants and have the advantage of being deficient in both lon and ompT proteases.
DE3 indicates that the host is a lysogen of λDE3, and therefore carries a chromosomal copy of the T7 RNA polymerase gene under control of the lacUV5 promoter. Such strains are suitable for production of protein from target genes cloned in pET vectors by induction with IPTG.
pLysS strains express T7 lysozyme, which further suppresses basal expression of T7 RNA polymerase prior to induction, thus stabilizing pET recombinants encoding target proteins that affect cell growth and viability. Genotype: F-ompT hsdSB(rB- mB-) gal dcm (DE3) pLysS (CamR)
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產(chǎn)品信息
Avoid freeze/thaw  是的
Components 
• 11 or 22 Singles Competent Cells
• 2 or 4 × 2 ml SOC Medium
• 10 µl Test Plasmid
Guaranteed efficiency  Guaranteed efficiency: > 2 x 107 cfu/µg
商店和運(yùn)輸信息
Hazardous Materials Attention: Due to the nature of the Hazardous Materials in this shipment, additional shipping chargesmay be applied to your order. Certain sizes may be exempt from the additional hazardous materials shipping charges. Please contact your local sales office for more information regarding these charges.
Storage  ≤ -70°C
Ship  Dry Ice Only
Multiple Toxicity Values, refer to MSDS
Licence Brookhaven  This product is covered under license from Brookhaven National Labs. Commercial entities need to obtain a research use license prior to purchase. Please contact your licensing department to confirm that your company already holds a research use license.