69956

BLR(DE3)pLysS Competent Cells - Novagen

Escherichia coli, rod shaped

• Code UNSPSC : 41106202
• Nomenclature NACRES : NA.81

Propriétés

• product name: BLR(DE3)pLysS Competent Cells - Novagen, BLR is a recA derivative of BL21 that improves plasmid monomer yields and may help stabilize target plasmids containing repetitive sequences. T7 lysozyme expression suppresses basal T7 expression.
• Source biologique: Escherichia coli
• Niveau de qualité: 100
• Fabricant/nom de marque: Novagen^®
• Conditions de stockage: OK to freeze; avoid repeated freeze/thaw cycles
• Mode de croissance: adherent or suspension
• Morphologie: rod shaped
• Technique(s): microbiological culture: suitable
• Transformation cellulaire: transformation efficiency: >2×10⁶ cfu/μg
• Conditions d'expédition: dry ice
• Température de stockage: −70°C

Description

Description générale

Genotype: F^-ompT hsdS_B(r_B^- m_B^-) gal dcm (DE3) Δ(srl-recA)306::Tn10 pLysS (Cam^R, Tet^R)





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.

BLR is a recA^- derivative of BL21 that improves plasmid monomer yields and may help stabilize target plasmids containing repetitive sequences or whose products may cause the loss of the DE3 prophage (1, 2).

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.

BLR is a recA derivative of BL21 that improves plasmid monomer yields and may help stabilize target plasmids containing repetitive sequences. T7 lysozyme expression suppresses basal T7 expression.

Composants

0.4 ml1 mlComponent

•2 × 0.2 ml5 × 0.2 mlBLR(DE3)pLysS Competent Cells

•2 × 2 ml4 × 2 mlSOC Medium

•2 ng2 ngTest Plasmid

Avertissement

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

Autres remarques

1. A. Roca (U. of Wisconsin), personal
communication.

2. Studier, F. W. (1991) J. Mol. Biol. 219,
37-44.

Informations légales

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

Informations sur la sécurité

• Code de la classe de stockage: 10 - Combustible liquids
• Classe de danger pour l'eau (WGK): WGK 2