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Competent Cells

Chemically modified bacterial cells capable of uptaking DNA from the environment via transformation. Competent cultures of E. coli are used in the lab for various procedures including cloning, protein expression, and genetic library creation.
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91 – 105 of 380 results
91

MilliporeSigma™ Novagen™ Rosetta™ (DE3) pLacI Competent Cells

Rosetta strains are BL21 derivatives designed to enhance the expression of eukaryotic proteins that contain codons rarely used in E. coli. Contains the pLacI plasmid producing extra Lac repressor.

Content And Storage ≤-70°C
92

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.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >2 x 106 cfu/μg
93

MilliporeSigma™ Novagen™ Rosetta™ Blue (DE3) 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.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >1 x 108 cfu/μg
94

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.

Content And Storage ≤-70°C
95

MilliporeSigma™ Novagen™ Rosetta-gami™ B (DE3) pLysS Competent Cells

Rosetta-gami B strains combines the key features of BL21, Origami, and Rosetta to enhances the expression of eukaryotic proteins. T7 lysozyme expression suppresses basal T7 expression.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >1 x 106 cfu/μg
97

MilliporeSigma™ Novagen™ NovaBlue GigaSingles™ Competent Cells
GSA_VA

NovaBlue GigaSingles™ Competent Cells produce greater than 1 x 10⁹ colonies/μg plasmid DNA for cloning applications requiring high-efficiency transformations.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >1 x 109 cfu/μg
98

MilliporeSigma™ Novagen™ Veggie NovaBlue Singles™ Competent Cells

Produces high-quality plasmid DNA

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >1.5 x 108 cfu/μg
99

MilliporeSigma™ Novagen™ Origami™ 2 Competent Cells

Origami 2 strains have mutations in glutathione reducatase (gor) and thioredoxin reductase (trxB), facilitating proper disulfide bond formation.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >2 x 106 cfu/μg
100

MilliporeSigma™ Novagen™ Rosetta-gami™ 2 Competent Cells

Rosetta-Gami 2 host strains allows for enhanced disulfide bond formation and enhanced expression of eukaryotic proteins that contain codons rarely used in E. coli.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >2 x 106 cfu/μg
101

MilliporeSigma™ Novagen™ Rosetta-gami™ 2 (DE3) pLacI Competent Cells

Rosetta-Gami 2 strains allows for enhanced disulfide bond formation and enhanced expression of eukaryotic proteins. Contains the pLacI plasmid producing extra Lac repressor.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >2 x 106 cfu/μg
102

MilliporeSigma™ Novagen™ Rosetta™ 2(DE3)pLysS Singles™ Competent Cells
GSA_VA

Novagen's Rosetta™ 2 host strains are BL21 derivatives designed to enhance the expression of eukaryotic proteins that contain codons rarely used in E. Coli.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >2 x 106 cfu/μg
103

MilliporeSigma™ Novagen™ Rosetta™ 2 Competent Cells

Novagen's Rosetta™ 2 host strains are BL21 derivatives designed to enhance the expression of eukaryotic proteins that contain codons rarely used in E. Coli.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >2 x 106 cfu/μg
104

MilliporeSigma™ Novagen™ Origami™ 2(DE3) Singles™ Competent Cells

Origami 2 strains have mutations in glutathione reducatase (gor) and thioredoxin reductase (trxB), facilitating proper disulfide bond formation.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: 2 x 106 cfu/μg
105

MilliporeSigma™ Novagen™ RosettaBlue™ (DE3)pLysS Competent Cells

RosettaBlue host strains combine high transformation efficiency with enhanced expression of eukaryotic proteins. T7 lysozyme expression suppresses basal T7 expression.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >1 x 106 cfu/μg