Tuner (DE3) Competent Cells - Novagen®，0.4ML，70623-3CN，Sigma

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订货号： 0BV8338

品牌型号： Sigma 70623-3CN

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最小订货量： 1件

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产品介绍 Product Description

General description

Genotype: F^–ompT hsdS_B (r_B^– m_B^–) gal dcm lacY1(DE3)

This product contains genetically modified organisms (GMO). Within the EU GMOs are regulated by Directives 2001/18/EC and 2009/41/EC of the European Parliament and of the Council and their national implementation in the member States respectively. This legislation obliges us to request certain information about you and the establishment where the GMOs are being handled. Click here for Enduser Declaration (EUD) Form.
Tuner strains are lacZY deletion mutants of BL21 and enable adjustable levels of protein expression throughout all cells in a culture. The lac permease (lacY) mutation allows uniform entry of IPTG into all cells in the population, which produces a concentration-dependent, homogeneous level of induction. By adjusting the concentration of IPTG, expression can be regulated from very low levels up to the robust, fully induced levels commonly associated with pET vectors. Lower-level expression may enhance the solubility and activity of difficult target proteins.

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.
Tuner host strains are lacZY deletion mutants of BL21, which enable adjustable levels of protein expression throughout all cells in a culture.

Other Notes

0.4 ml1 mlComponent

•2 × 0.2 ml5 × 0.2 mlTuner(DE3) Competent Cells

•2 × 2 ml4 × 2 mlSOC Medium

•2 ng2 ngTest Plasmid

Legal Information

NOVAGEN is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

Toxicity: Multiple Toxicity Values, refer to MSDS (O)

技术参数 Specifications

biological source	Escherichia coli
Quality Level	100
manufacturer/tradename	Novagen^®
storage condition	OK to freeze,avoid repeated freeze/thaw cycles
growth mode	adherent or suspension
morphology	rod shaped
technique(s)	microbiological culture: suitable
cell transformation	transformation efficiency: >2×10⁶ cfu/μg
shipped in	dry ice,wet ice
storage temp.	−70°C

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