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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.
Brand: Invitrogen™ C303006
4233.24 DKK valid until 2024-12-20
Use promo code "21651" to get your promotional price.
This item is not returnable.
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Description
One Shot TOP10F´ Chemically Competent E. coli are identical to TOP10 cells, with the addition of an F´ episome. The F´ episome carries a tetracycline resistance gene and allows isolation of single-stranded DNA (ssDNA) from vectors that have an f1 origin of replication. In addition, the F´ episome carries the lacIq repressor for inducible expression from trc, tac, and lac promoters using IPTG.
TOP10F´ competent cells are provided at a transformation efficiency of >1 x 109 cfu/μg supercoiled DNA and are ideal for high-efficiency cloning and plasmid propagation.
As a derivative of TOP10, TOP10F´ Chemically Competent E. coli cells carry mutations in the methylation-dependent restriction system (mcrA, mcrBC, and mrr) allowing them to clone both prokaryotic and eukaryotic genomic DNA and provide efficient plasmid rescue from eukaryotic genomes. TOP10F´ cells also carry recA1 and endA1 mutations that increase insert stability and improve the quality of plasmid DNA prepared from minipreps.
One Shot TOP10F´ Chemically Competent E. coli cells offer:
• Transformation efficiencies of >1 x 109 cfu/μg
• Stable F´ episome that allows isolation of ssDNA and carries lacIq repressor for inducible expression from trc, tac, and lac promoters
• hsdR for efficient transformation of unmethylated DNA from PCR amplifications
• mcrA for efficient transformation of methylated DNA from genomic preparations
• lacZΔM15 for blue/white color screening of recombinant clones on plates containing X-Gal or Bluo-Gal
• endA1 for cleaner DNA preparations and better results in downstream applications due to elimination of nonspecific digestion by Endonuclease I
• recA1 for reduced occurrence of nonspecific recombination in cloned DNA
Note: IPTG induction is required for blue-white color screening.
Easy-to-use One Shot format
TOP10 F´ Chemically Competent E. coli cells are supplied in the convenient, single-reaction One Shot format. The single-tube, single-use format allows all steps of the transformation protocol, up to plating, to take place in the same tube, saving time and preventing contamination.
Genotype
F´{lacIq, Tn10(TetR)} mcrA Δ(mrr-hsdRMS-mcrBC) φ80lacZΔM15 ΔlacX74 recA1 araD139 Δ(ara-leu)7697 galU galK rpsL(StrR) endA1 nupG
Find the strains and formats that fit your needs
• DH strains are available in chemically competent and electrocompetent cell formats.
• For high throughput applications there are a variety of TOP10 strains in MultiShot formats.
• For ssDNA production try strains such as TOP10F´ (Cat. No. C303003) or electrocompetent DH12S (Cat. No. 18312017).
Order Info
Shipping Condition: Dry Ice
Specifications
| Chemically Competent Cells | |
| Yes (endA1) | |
| High Efficiency (>1 x 109 cfu/μg) | |
| Yes (Streptamycin, Tetracycline) | |
| Yes (lacZΔM15) | |
| No | |
| Dry Ice | |
| E. coli (K12) | |
| Tube | |
| 42 x 50 μL |
| Yes | |
| Yes (mcrA) | |
| • One Shot TOP10F' Chemically Competent E. coli (42 x 50 μL) Store Competent Cells at –80°C. • pUC19 plasmid (50 μL at 10 pg/μL) Store pUC19 plasmid at –20°C. • S.O.C. Medium (6 mL) Store S.O.C. Medium at 4°C or room temperature. |
|
| Not suitable for cloning unstable DNA | |
| Low | |
| Yes (recA1) | |
| No | |
| Trc, Tac, Lac | |
| One Shot™ |
For Research Use Only. Not for use in diagnostic procedures.