accessibility menu, dialog, popup

UserName

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.
Format 
  • (5)
  • (13)
  • (1)
  • (1)
  • (46)
  • (8)
  • (13)
Species 
  • (32)
  • (8)
  • (38)
  • (3)
  • (3)
Promoter 
  • (2)
  • (8)
  • (2)

Filtered Search Results

Products from some of our suppliers do not display in filtered search results. Please clear all filters to see these products.

Narrow Results

Narrow Results

category

special offers

  • (2)

brands

  • (12)
  • (4)
  • (71)
  • (42)
  • (2)
  • (79)

special interests

  • (2)

Format

  • (5)
  • (13)
  • (1)
  • (1)
  • (46)
  • (8)
  • (13)

Species

  • (32)
  • (8)
  • (38)
  • (3)
  • (3)

Promoter

  • (2)
  • (8)
  • (2)
Keyword Search:
1 – 15 of 105 results
1

Invitrogen™ ElectroMAX™ Stbl4™ Competent Cells  DFS Item

ElectroMAX Stbl4 Competent Cells are specifically designed for cloning unstable inserts. This strain is a derivative of Stbl2 cells (engineered from JM109/J5 strain).

2

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

Rosetta-Gami 2 host strains allows for enhanced disulfide bond formation and enhanced expression of eukaryotic proteins. T7 lysozyme expression suppresses basal T7 expression.

3

MilliporeSigma™ Novagen™ Rosetta-gami™ 2 (DE3) 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
4

Invitrogen™ MultiShot™ FlexPlate DH10B T1R Competent Cells  DFS Item

MultiShot FlexPlate DH10B T1R chemically competent E. coli cells are cloning competent cells pre-aliquoted in a 96-well PCR plate to increase transformation productivity.

5

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
6

MilliporeSigma™ Novagen™ BL21 (DE3) pLysS Singles™ Competent Cells

BL21 strains are the most widely used hosts for protein expression from pET recombinants and have the advantage of being deficient in both lon and ompT proteases.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >2 x 107 cfu/μg
7

Invitrogen™ One Shot™ INVαF' Chemically Competent E. coli  DFS Item

One Shot INVαF' Chemically Competent E. coli are designed to stably replicate high-copy number plasmids.

8

Invitrogen™ One Shot™ PIR1 Chemically Competent E. coli  DFS Item

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).

9

Invitrogen™ MultiShot™ StripWell TOP10 Chemically Competent E. coli  DFS Item

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.

Shipping Condition Dry Ice
Blue/White Screening Yes (lacZΔM15)
Cloning Methylated DNA Yes (mcrA)
Transformation Efficiency Level Medium Efficiency (1 x 108 to 1 x 109 cfu/μg)
High-throughput Compatibility High
Improves Plasmid Quality Yes (endA1)
Preparing Unmethylated DNA No
Plasmid High Copy Plasmid
Reduces Recombination Yes (recA1)
T1 Phage - Resistant (tonA) No
Antibiotic Resistance Bacterial Yes (Streptomycin)
Product Type Chemically Competent Cells
Product Line MultiShot
Contains F' Episome No
10

Invitrogen™ MultiShot™ TOP10 Chemically Competent E. coli  DFS Item

MultiShot TOP10 Chemically Competent E. coli cells are derived from DH10B and are one of the most popular laboratory strains.

11

Thermo Scientific™ DH5α Competent Cells

Chemically competent E. coli cells recommended for routine subcloning into plasmid vectors. Subcloning efficiency cells are not suitable for the generation of cDNA libraries.

12

Thermo Scientific™ DH10B Competent Cells; High Efficiency

High efficiency, chemically competent E. coli cells. The DH10B strain is suitable for cloning DNA containing methylcytosine, 5-hydroxymethylcytosine, and methyladenine, allowing both prokaryotic and eukaryotic genomic DNA to be cloned efficiently.

13

Thermo Scientific™ BL21(DE3) Competent Cells

Suitable for the expression of non-toxic heterologous genes. The strain contains the lambda DE3 prophage that carries the gene for T7 RNA polymerase under control of a lacUV5 promoter, allowing expression of the T7 RNA polymerase to be induced with IPTG.

14

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
15

Invitrogen™ One Shot™ Mach1™ T1 Phage-Resistant Chemically Competent E. coli  DFS Item

One Shot Mach1 T1 Phage-Resistant Chemically Competent E. coli are the fastest growing chemically competent cells with a doubling time approximately 50 minutes.