Competent Cells
MilliporeSigma™ Novagen™ Rosetta™ Competent Cells
Rosetta host strains are BL21 derivatives designed to enhance the expression of eukaryotic proteins that contain codons rarely used in E. coli.
MilliporeSigma™ Novagen™ HMS174 Competent Cell Set
HMS174 strains provide the recA mutation in a K-12 background.
MilliporeSigma™ Novagen™ Tuner™ Competent Cells
Tuner host strains are lacZY deletion mutants of BL21, which enable adjustable levels of protein expression throughout all cells in a culture.
MilliporeSigma™ Novagen™ HT96™ NovaBlue Competent Cells
High-efficiency competent cells predispensed in 96-well plate for high-throughput applications
MilliporeSigma™ Novagen™ Rosetta-gami™ B Competent Cells
Rosetta-gami B strains combine the key features of BL21, Origami, and Rosetta to enhance both the expression of eukaryotic proteins and the formation of target protein disulfide bonds.
Invitrogen™ MultiShot™ StripWell BL21 Star™ (DE3) Competent Cells
MultiShot StripWell BL21 Star (DE3) chemically competent E. coli cells are cloning competent cells designed for applications that require high-level expression of non-toxic recombinant proteins from low copy number, T7 promoter-based expression systems.
MilliporeSigma™ Novagen™ BLR (DE3) pLysS Competent Cells
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.
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™ MultiShot™ BL21 Star™ (DE3) Chemically Competent E. coli Cells, 96-tube rack
MultiShot BL21 Star (DE3) Chemically Competent E. coli Cells deliver enhanced mRNA stability for high-yield protein expression. The flexible 96-tube rack format supports scalable, efficient workflows for cloning and expression experiments.
Invitrogen™ MultiShot™ TOP10 Chemically Competent E. coli Cells, 96-tube rack
MultiShot TOP10 Chemically Competent E. coli Cells provide high-efficiency transformation for routine cloning with flexible workflow capacity. The 96-tube rack format supports scalable, high-throughput plasmid propagation and blue/white screening.
Invitrogen™ MultiShot™ Mach1™ T1R Chemically Competent E. coli Cells, 96-well plate
MultiShot Mach1™ T1R Chemically Competent E. coli Cells enable rapid, high-efficiency cloning in an automation-ready 96-well format. Fast-growing and phage-resistant, these cells support same-day transformation and streamlined high-throughput workflows.
Invitrogen™ MultiShot™ BL21(DE3) Chemically Competent E. coli Cells, 96-tube rack
MultiShot BL21(DE3) Chemically Competent E. coli Cells enable efficient protein expression with flexible workflow capacity. The 96-tube rack format allows convenient use with varying sample numbers for scalable, high-throughput expression and cloning experiments.
Invitrogen™ MultiShot™ Stbl3™ Chemically Competent E. coli Cells, 96-well plate
MultiShot Stbl3 Chemically Competent E. coli Cells support cloning of unstable vectors with direct repeats. Automation-compatible 96-well format ensures high-throughput use while the Stbl3 strain minimizes recombination and maintains complex constructs.
Invitrogen™ MultiShot™ FlexPlate OmniMAX™ 2 T1R Competent Cells
MultiShot FlexPlate OmniMAX 2 T1R chemically competent E. coli cells are a superior strain of cloning competent cells that are pre-aliquoted in a 96-well PCR plate to increase transformation productivity.
MilliporeSigma™ Novagen™ Tuner™ Competent Cell Set
Tuner™ strains are lacZY deletion mutants of BL21 and enable adjustable levels of protein expression throughout all cells in a culture.