ElectroMAX™ DH10B™ T1 Phage-Resistant Competent Cells

Catalog number:  12033015

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ElectroMAX™ DH10B™ T1 Phage-Resistant Competent Cells offer transformation efficiencies that are among the highest achieved by any product we offer, and can exceed 1 x 1010 cfu/µg plasmid DNA in efficiency. They are ideal for applications requiring high-efficiency transformation, including cDNA and gDNA library construction. ElectroMAX™ DH10B™ cells:

• Maximize yield of transformants from limited cloning products
• Permit efficient cloning of methylated DNA
• Are resistant to T1 and T5 bacteriophages
• Support blue/white screening by α-complementation on plates containing X-Gal or Bluo-Gal
• Deliver high-yield plasmid preparations for downstream applications

Phage-resistant representative libraries from a single transformation
The tonA mutation in DH10B™ cells confers resistance to bacteriophages T1 and T5, safeguarding valuable libraries against contamination. Additionally, mutations in the methylation-dependent restriction system (mcrA, mcrBC, and mrr) make ElectroMAX™ DH10B™ T1 Phage-Resistant Cells ideal for construction of genomic libraries of both prokaryotic and eukaryotic genomic DNA, and allow for efficient plasmid rescue from eukaryotic genomes. ElectroMAX™ DH10B™ T1 Phage-Resistant Cells are suitable for construction of gene banks, for the generation of cDNA libraries using plasmid-derived vectors, and for situations when DNA is limiting. This strain also has the Φ80lacZΔM15 genotype, providing for the option of blue/white screening on plates containing either X-Gal or Bluo-Gal. Finally, the endA1 mutation makes DH10B™ an excellent vehicle for amplifying plasmid DNA for subsequent extraction and purification.

Genotype: F-mcrA Δ(mrr-hsdRMS-mcrBC) Φ80lacZΔM15 ΔlacX74 recA1 endA1 araD139Δ(ara, leu)7697 galU galK λ-rpsL nupG tonA

Find the strain and format that you need
DH10B™ cells are available in both electrocompetent and chemically competent formats. Our ElectroMAX DH10B™ cells are also suitable for cDNA or gDNA library construction but are not resistant to T1 and T5 phage infection. Our MegaX DH10B™ T1R Electrocomp™ Cells have the highest transformation efficiency (>3 x 1010 cfu/µg plasmid DNA) and also offer the benefit of T1 and T5 phage resistance.


Competent Cell Type: Electrocompetent
Species: E. coli
Format: Tube(s)
Transformation Efficiency: > 1x10^10
Bacterial or Yeast Strain: DH10B™
Product Line: DH10B™, ElectroMAX™
Blue-White Screening: Yes
Cloning Methylated DNA: Yes
Cloning Unstable DNA: Not Suitable for cloning unstable DNA
F' Episome (to make ssDNA): Lacks F' Episome
High Throughput Compatibility: Not High Throughput-Compatible (Manual)
Improves Plasmid Quality: Yes
Plasmid Type: May be used for plasmids > 20 kb
Preparing Unmethylated DNA: Not Suitable for preparing unmethylated DNA
Product Size: 25 reactions
Propagating ccdB Vectors: Not for ccdB vector propagation
Reduces Recombination: Yes
T1 Phage - Resistant (tonA): Yes
Regulatory Statement: For Research Use Only. Not for use in diagnostic procedures.
Shipping Condition: Dry Ice

Contents & storage

• ElectroMAX™ DH10B™ T1 Phage-Resistant Cells: 5 vials, 100 µl each
• pUC19 DNA (10 pg/µl): 1 vial, 50 µl
• S.O.C. medium: 2 bottles, 6 ml each

Store Competent Cells at -80°C. Store pUC19 DNA at -20°C. Store SOC Medium at 4°C or at room temperature.


Manuals & protocols