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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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76 – 90 of 450 results
76

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
77

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
78

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.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >2 x 106 cfu/μg
79

MilliporeSigma™ Novagen™ Origami™ B (DE3) pLysS Competent Cells

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.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >2 x 106 cfu/μg
80

Invitrogen™ Tali™ Calibration Beads

Align and calibrate Tali™ Image-Based Cytometer every three months

ENCOMPASS_PREFERRED
81

Gibco™ CD Hybridoma AGT™ Medium

Animal origin-free, chemically defined, protein-free medium

ENCOMPASS
82

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.

ENCOMPASS_PREFERRED
Shipping Condition Dry Ice
Blue/White Screening Yes (lacZΔM15)
Cloning Unstable DNA Not suitable for cloning unstable DNA
Cloning Methylated DNA Yes (mcrA)
Transformation Efficiency Level High Efficiency (>1 x 109 cfu/μg)
High-throughput Compatibility Low
Improves Plasmid Quality Yes (endA1)
Promoter Trc, Tac, Lac
Preparing Unmethylated DNA No
Reduces Recombination Yes (recA1)
T1 Phage - Resistant (tonA) No
Antibiotic Resistance Bacterial Yes (Streptamycin, Tetracycline)
Format Tube
Product Type Chemically Competent Cells
Species E. coli (K12)
Product Line One Shot
Contains F' Episome Yes
83

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

Rosetta host strains are BL21 derivatives designed to enhance the expression of eukaryotic proteins that contain codons rarely used in E. coli. T7 lysozyme expression suppresses basal T7 expression.

Content And Storage ≤-70°C
84

MilliporeSigma™ Novagen™ NovaBlue Singles™ Competent Cells
GSA_VA

NovaBlue Singles Competent Cells are designed for ultimate convenience and reliability in plasmid transformation.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >1.5 x 108 cfu/μg
85

Invitrogen™ MAX Efficiency™ DH5α Competent Cells

MAX Efficiency™ DH5α Competent Cells are a well-known, versatile strain that is used in many everyday cloning applications. Prepared by a proprietary modification of the Hanahan method, these cells are suitable for high efficiency transformations in applications where low amount of DNA is used or to construct libraries using plasmid-derived vectors.

ENCOMPASS_PREFERRED
86

Invitrogen™ Tali™ Cell Cycle Kit

Convenient and accurate determination of the percentage of cells in each phase of the cell cycle

ENCOMPASS_PREFERRED
87

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.

ENCOMPASS_PREFERRED
88

MilliporeSigma™ Novagen™ Rosetta™ 2(DE3)pLysS 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
89

MilliporeSigma™ Novagen™ Rosetta™ 2 (DE3) 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
90

MilliporeSigma™ Novagen™ BL21 Competent Cell Set

BL21 is the most widely used host background and has the advantage of being deficient in both lon (1) and ompT proteases.