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)
  • (2)
  • (13)
Species 
  • (26)
  • (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)
  • (65)
  • (42)
  • (2)
  • (4)

special interests

  • (2)

Format

  • (5)
  • (13)
  • (1)
  • (1)
  • (46)
  • (2)
  • (13)

Species

  • (26)
  • (8)
  • (38)
  • (3)
  • (3)

Promoter

  • (2)
  • (8)
  • (2)

Search Within Results
Keyword Search:
1 – 15 of 99 results
1

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.

2

Gibco™ FreeStyle™ CHO Expression Medium  DFS Item
GREENER_CHOICE

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

Cell Line FreeStyle™ CHO-S Cells, CHO
Content And Storage Storage conditions: 2°C to 8°C. Protect from light
Shipping conditions: Ambient
Shelf life: 12 months from date of manufacture
Form Liquid
Product Type Expression Medium
Endotoxin Level ≤0.25 EU/mL, ≤ 0.25 EU/mL
Classification Chemically Defined, Protein-Free, Serum-Free
Culture Type Suspension Cell Culture
Phenol Red Indicator No Phenol Red
Product Line Freestyle, Gibco
Serum Level Serum-Free
Glutamine No Glutamine
3

Gibco™ Expi293™ Met (–) Expression Medium  DFS Item

Expi293 Met (–) Expression Medium is a cGMP-manufactured, chemically defined, serum-free, protein-free, animal origin-free, methionine-free medium for growth and transfection of Expi293F cells.

4

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.

5

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
6

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
7

Invitrogen™ MultiShot™ StripWell DH5α T1R Competent Cells  DFS Item

MultiShot StripWell DH5α T1R chemically competent E. coli cells are cloning competent cells packaged in a rack containing 12 strips of 8 tubes to increase productivity for medium-throughput bacterial transformations.

8

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
9

MilliporeSigma™ Novagen™ Rosetta-gami™ 2 Competent Cell Set

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.

10

Invitrogen™ Tali™ Cell Cycle Kit  DFS Item

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

11

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.

12

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
13

MilliporeSigma™ Novagen™ BL21(DE3) pLysS Competent Cells

BL21 host strain that expresses T7 RNA polymerase and also encode T7 lysozyme that suppresses basal expression of toxic target proteins prior to induction.

Content And Storage ≤-70°C
Efficiency Guaranteed efficiency: >2 x 107 cfu/μg
14

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

Protease-deficient hosts (BL21) for protein expression; Manufactured free of animal-derived media and components

Content And Storage ≤-70°C
15

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).