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Origami B(DE3)pLysS Competent Cells - Novagen

Escherichia coli, rod shaped

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About This Item

UNSPSC Code:
41106202
NACRES:
NA.81

product name

Origami B(DE3)pLysS Competent Cells - Novagen, Origami B host strain derived from a lacZY mutant of BL21 to enable precise control of expression levels using IPTG. T7 lysozyme expression suppresses basal T7 expression.

biological source

Escherichia coli

Quality Level

manufacturer/tradename

Novagen®

storage condition

OK to freeze

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

storage temp.

−70°C

General description

Genotype: F-ompT hsdSB(rB- mB-) gal dcm lacY1 ahpC (DE3) gor522::Tn10 trxB pLysS (CamR, KanR, TetR)





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.
Origami B host strains carry the same mutationsin trxB and gor as the original Origami strains,except that they are derived from a lacZY mutantof BL21 to enable precise control of expressionlevels by adjusting the concentration of IPTG.Thus the Origami B strains combine the desirablecharacteristics of BL21, Tuner, and Origamistrains in one strain background. The mutationsin trxB and gor are selectable on kanamycin andtetracycline, respectively; therefore, these strainscannot be used with plasmids that can onlyselected with kanamycin or tetracycline. Thesestrains also include the lon and ompT deficiencesof BL21, which increase protein stability.

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.
Origami B host strain derived from a lacZY mutant of BL21 to enable precise control of expression levels using IPTG. T7 lysozyme expression suppresses basal T7 expression.

Components

0.4 ml1 mlComponent

•2 × 0.2 ml5 × 0.2 mlOrigami B(DE3)pLysS Competent Cells

•2 × 2 ml4 × 2 mlSOC Medium

•2 ng2 ngTest Plasmid

Warning

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

Legal Information

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

Storage Class Code

10 - Combustible liquids


Certificates of Analysis (COA)

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An effective strategy for ligand-mediated pulldown of the HER2/HER3/NRG1I? heterocomplex and cryo-EM structure determination at low sample concentrations.
Trenker, et al.
Methods Enzymol, 667, 633-662 (2023)

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