Thermo Scientific™

Phusion™ Site-Directed Mutagenesis Kit with DH10B Competent Cells

Catalog number: F542
Thermo Scientific™

Phusion™ Site-Directed Mutagenesis Kit with DH10B Competent Cells

Catalog number: F542
Catalog Number
Unit Size
20 reactions
Price (USD)
Price: 307.00
Your Price:
Catalog NumberUnit SizePrice (USD)AvailabilityQuantity
F54220 reactions
Price: 307.00
Your Price:
Product Overview
Citations & References
Additional Information
This package includes a Phusion Site-Directed Mutagenesis Kit and DH10B Competent Cells that are optimized for use with the kit.

Phusion Site-Directed Mutagenesis Kit
The Thermo Scientific Phusion Site-Directed Mutagenesis Kit is a versatile and efficient tool for introducing point mutations, insertions, or deletions into any type of plasmid DNA. With this kit the entire plasmid is amplified using phosphorylated primers that introduce the desired changes. The amplified, linear PCR product, containing the desired mutation, is circularized in a 5-minute ligation reaction with T4 DNA Ligase. The resulting plasmid can be then transformed into the E.coli cells. DH10B Competent Cells are recommended for use with the kit.

The optimal annealing temperature for Phusion DNA polymerases may differ significantly from that of Taq-based polymerases. For optimal results start by accurately calculating your Tm with our Tm calculator.

• Robust and reliable exponential amplification method
• No requirements, such as special vectors, restriction sites, or methylation status for the target plasmid
• No need to destroy the starting template in a separate step
Phusion Hot Start II High Fidelity DNA Polymerase minimizes unwanted secondary mutations
• Amplification of large plasmids up to 10 kb
• Hot start modification of the polymerase prevents amplification of non-specific products and unwanted degradation of primers prior to first cycle of PCR
• T4 DNA Ligase included in the kit; no purification steps before or after ligation

DH10B Competent Cells
Thermo Scientific DH10B Competent Cells are high efficiency, chemically competent E.coli cells. The DH10B strain is suitable for cloning DNA containing methylcytosine and methyladenine, allowing both prokaryotic and eukaryotic genomic DNA to be cloned efficiently. These cells are ideal for the construction of cDNA libraries using plasmid-derived vectors. Genotype: F– mcrA Δ(mrr-hsdRMS-mcrBC) φ80lacZΔM15 ΔlacX74 recA1 endA1 araD139 Δ (ara-leu)7697 galU galK λ– rpsL(StrR) nupG.

• High transformation efficiency: >1x109 cfu/µg pUC19 DNA
• Suitable for routine and high-throughput cloning and mutagenesis applications
• Convenient two reactions per vial packaging
• S.O.C. Outgrowth medium included

Related products
Thermo Scientific Phusion Site-Directed Mutagenesis Kit without competent cells


Cell Type
Sample Type
PCR product
≥1 x 10^9
Maxima H Minus
For Use With (Application)
Mutagenesis Capability
Single-Site Mutagenesis
No. of Reactions
20 Reactions
Product Line
Phusion, Thermo Scientific™
Product Type
Site-Directed Mutagenesis Kit
20 Reactions
Shipping Condition
Dry Ice

Contents & Storage

Box 1
• 10 x DH10B Competent Cells, 100 µL
• pUC19 DNA, 50 µL, 100 pg/µL
• S.O.C. Medium, 5 mL
Store at -80°C.

Box 2
• Phusion Hot Start II DNA Polymerase, 10 µL, 2 U/µL
• Phusion HF Buffer (5X), 1.5 mL
• dNTP Mix, 10 mM each, 20 µL
• FastDigest DpnI, 20 µL
• Control plasmid (in TE buffer), 5 ng/µL
• Control primer mix (25 μM each of 5' phosphorylated primers), 20 µL
• T4 DNA Ligase, 15 µL
• Rapid Ligation Buffer (5X), 200 µL
Store at -20°C.