Competent Cells
Invitrogen™ One Shot™ BL21 Star™ (DE3) Chemically Competent E. coli
One Shot BL21 Star (DE3) Chemically Competent E. coli are designed for applications that require high-level expression of non-toxic recombinant proteins from low copy number, T7-promoter-based expression systems such as Champion pET vectors.
Invitrogen™ One Shot™ BL21-AI™ Chemically Competent E. coli
One Shot BL21-AI Chemically Competent E. coli cells are designed for applications that require tight regulation and strong expression of toxic proteins from any T7-promoter-based expression systems.
Invitrogen™ One Shot™ PIR2 Chemically Competent E. coli
One Shot PIR2 Chemically Competent E. coli cells are for use with vectors that contain the R6Kγ origin of replication (e.g., pUni/V5-His-TOPO for recombination with an Echo cloning system).
Invitrogen™ One Shot™ PIR1 Chemically Competent E. coli
One Shot PIR1 Chemically Competent E. coli cells are for use with vectors that contain the R6Kγ origin of replication (e.g., pUni/V5-His-TOPO for recombination with an Echo cloning system).
Invitrogen™ One Shot™ BL21(DE3)pLysS Chemically Competent E. coli
One Shot BL21(DE3)pLysS Chemically Competent E. coli cells are ideal for use with bacteriophage T7 promoter-based expression systems such as pRSET and pET.
Invitrogen™ One Shot™ TOP10F' Chemically Competent E. coli
One Shot TOP10F' Chemically Competent E. coli are identical to TOP10 cells, with the addition of an F' episome.
Invitrogen™ MultiShot™ StripWell Stbl3™ Competent Cells
MultiShot StripWell Stbl3 Chemically Competent E. coli cells are cloning competent cells designed for cloning direct repeats found in lentiviral expression vectors.
Invitrogen™ MultiShot™ StripWell TOP10 Chemically Competent E. coli
MultiShot StripWell TOP10 Chemically Competent E. coli cells are ideal for high-efficiency cloning and plasmid propagation, achieving a transformation efficiency of >1 x 108 cfu/μg with control plasmid DNA in StripWell format.
Invitrogen™ MultiShot™ TOP10 Chemically Competent E. coli
MultiShot TOP10 Chemically Competent E. coli cells are derived from DH10B and are one of the most popular laboratory strains.
Invitrogen™ MultiShot™ StripWell Mach1™ T1 Phage-Resistant Chemically Competent E. coli
MultiShot StripWell Mach1 T1R chemically competent E. coli cells are exceptionally fast-growing cloning competent cells packaged in a rack containing 12 strips of 8 tubes for increased productivity of bacterial transformations.
MilliporeSigma™ Novagen™ HMS174 Competent Cells
HMS174 strains provide high transformation efficiencies and the recA mutation in a K-12 background. Strain may stabilize certain target genes whose products may cause the loss of the DE3 prophage.
MilliporeSigma™ Novagen™ RosettaBlue™ (DE3) Competent Cells
RosettaBlue host strains are NovaBlue derivatives that combine high transformation efficiency and with enhanced expression of eukaryotic proteins that contain codons rarely used in E. coli.
Invitrogen™ MAX Efficiency™ Stbl2™ Competent Cells
MAX Efficiency Stbl2 Competent Cells are high-efficiency chemically competent cells specifically designed for cloning unstable inserts.
Invitrogen™ MC1061/P3 Chemically Competent E. coli
MC1061/P3 Chemically Competent E. coli are used for highly efficient transformations that require the P3 episome for selection and maintenance of vectors encoding the tyrosine tRNA suppressor (synthetic supF gene, such as pCDM8, pcDNA1.1, or any other supF-containing vector).
MilliporeSigma™ Novagen™ Tuner™ DE3 pLysS Competent Cells
Tuner host strains are lacZY deletion mutants of BL21, which enable adjustable levels of protein expression throughout all cells in a culture. T7 lysozyme expression suppresses basal T7 expression.