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NEBuilder® HiFi DNA Assembly Master Mix

Catalog # Concentration Size List Price Quantity Your Price
E2621L 50 reactions $990.00
$891.00
E2621S 10 reactions $251.00
$225.90
E2621X 250 reactions $3,886.00
$3,497.40
Catalog # Size List Price Your Price
E2621L 50 reactions $990.00
$891.00
E2621S 10 reactions $251.00
$225.90
E2621X 250 reactions $3,886.00
$3,497.40
Catalog #
Qty:
 
*On-line ordering is for Canadian customers only. Web pricing is applicable only to orders placed online at www.neb.ca

NEBuilder® HiFi DNA Assembly Master Mix allows for seamless assembly of multiple DNA fragments, regardless of fragment length or end compatibility. It has utility for the synthetic biology community, as well as those interested in one-step cloning of multiple fragments due to its ease of use, flexibility and simple master-mix format. Visit NEBuilderHifi.com for more information.

  • Also available with chemically competent cells at a discounted price.
  • Enjoy less screening/re-sequencing of constructs, with virtually error-free, high-fidelity assembly
  • Flexible sequence design (scar-less cloning)
  • No PCR clean-up step required
  • Join DNA fragments together more efficiently, even with larger fragments or low DNA inputs
  • Use NEBuilder HiFi in successive rounds of assembly, because it removes 5´ and 3´ end mismatches. (Save time by avoiding time-consuming PCR amplification steps.)
  • Bridge two ds-fragments with a synthetic ss-DNA oligo for simple and fast construction (e.g., linker insertion or gRNA library)
  • Use with lower DNA input requirements
  • Easily adapted for multiple DNA manipulations, including site-directed mutagenesis
  • No licensing fee requirements from NEB for NEBuilder products
Featured Videos
View Video Library
  • Monarch_MiniprepProtocol_VideoThumb
    Introduction to NEBUILDER HIFI DNA ASSEMBLY®
  • Monarch_MiniprepProtocol_VideoThumb
    Quick Tips - Can I make multiple mutations with the Q5® site-directed mutagenesis kit?
  • Monarch_MiniprepProtocol_VideoThumb
    NEBioCalculator® - Using the ds: mass < — > moles module to plan an NEBuilder® HiFi DNA Assembly Reaction
  • Monarch_MiniprepProtocol_VideoThumb
    Construction of an sgRNA-Cas9 Expression Vector via an ssOligo Bridge
  • Monarch_MiniprepProtocol_VideoThumb
    NEBUILDER® HiFi: the next generation of DNA Assembly
  • Monarch_MiniprepProtocol_VideoThumb
    NEBUILDER HIFI DNA ASSEMBLY® Removal of 3´ end Mismatches
  • Monarch_MiniprepProtocol_VideoThumb
    NEBUILDER® HIFI DNA ASSEMBLY® : Bridging dsDNA with a ssDNA Oligo
  • Monarch_MiniprepProtocol_VideoThumb
    Primer Design and Fragment Assembly Using NEBuilder HiFi DNA Assembly® or Gibson Assembly®
  • Monarch_MiniprepProtocol_VideoThumb
    NEB® TV Ep. 8 – Cloning and DNA Assembly
  • Monarch_MiniprepProtocol_VideoThumb
    NEB® TV Ep. 12 – Applications of DNA Assembly
  • Monarch_MiniprepProtocol_VideoThumb
    NEB® TV Ep. 1 – Synthetic Biology
  • Monarch_MiniprepProtocol_VideoThumb
    NEBUILDER® Assembly Tool 2.0 What’s New?
  • Monarch_MiniprepProtocol_VideoThumb
    NEBUILDER® Assembly Tool 2.0 Fragments Amplified by PCR
  • Monarch_MiniprepProtocol_VideoThumb
    NEBUILDER® Assembly Tool 2.0 Restriction Enzyme Digest


NEBuilder HiFi DNA Assembly Master Mix was developed to improve the efficiency and accuracy of DNA assembly. This method allows for seamless assembly of multiple DNA fragments, regardless of fragment length or end compatibility. This method has been used to assemble either single-stranded oligonucleotides or different sizes of DNA fragments with varied overlaps (15–30 bp). It has utility for the synthetic biology community, as well as those interested in one-step cloning of multiple fragments due to its ease of use, flexibility and simple master-mix format. The reaction includes different enzymes that work together in the same buffer (see Figure 1):
  • The exonuclease creates single-stranded 3´ overhangs that facilitate the annealing of fragments that share complementarity at one end (the overlap region)
  • The polymerase fills in gaps within each annealed fragment
  • The DNA ligase seals nicks in the assembled DNA 
The end result is a double-stranded fully sealed DNA molecule that can serve as template for PCR, RCA or a variety of other molecular biology applications, including direct transformation of E coli.

NEBuilder HiFi DNA Assembly kits are available in various formats: with NEB 5-alpha chemically competent cells (Cloning Kit, NEB #E5520), as a bundle with NEB 10-beta chemically competent cells (Bundle for Large Fragments, NEB #E2623) and without competent cells (Master Mix, NEB #E2621) . NEB 5-alpha chemically competent cells are excellent for routine assemblies of 15 kb or less. NEB recommends NEB 10-beta Competent E. coli (High Efficiency, NEB #C3019 ) or NEB 10-beta Electrocompetent E. coli (NEB #C3020) for assemblies larger than 15 kb. If the assembled genes contain repetitive sequences, NEB Stable Competent E. coli (NEB #C3040) should be used. 

NEBuilder has been used in various applications, including:
To help select the best DNA assembly method for your needs, please use our Synthetic Biology/DNA Assembly Selection Chart.

For help designing your primers for use with NEBuilder, please view our primer design video.

Figure 1: Not your average DNA assembly reagent



Figure 2: Overview of the NEBuilder HiFi DNA Assembly method



Figure 3: NEBuilder HiFi DNA Assembly offers improved efficiency in 4-fragment assembly reactions


Four fragments (~20 fmol) with 20 bp overlap were assembled using NEBuilder HiFi DNA Assembly Master Mix (NEB #E2621), GeneArt® Gibson Assembly® Mix (Thermo Fisher #A46627) and In-Fusion® Snap Assembly Master Mix (Takara Bio USA #638947) to create a pUC19 vector. Assembly reactions were performed at 50°C for 60 min or 15 min. 2 μl of each assembled mix was transformed into NEB 5-alpha Competent E.coli (NEB #C2987) and spread on LB/Amp plates with IPTG and X-Gal. Blue colonies ( >95% of total colonies) that indicated correct assembly were counted. NEBuilder HiFi DNA Assembly Mix yields more colonies than both competitors.

View additional performance data compared to GeneArt Gibson Assembly and In-Fusion Snap Assembly
Reagents Supplied

The following reagents are supplied with this product:

NEB # Component Name Component # Stored at (°C) Amount Concentration
  NEBuilder® Positive Control N2611AVIAL -20 1 x 0.05 ml
  NEBuilder® HiFi DNA Assembly Master Mix M5520AVIAL -20 1 x 0.1 ml 2 X
  NEBuilder® Positive Control N2611AVIAL -20 1 x 0.05 ml
  NEBuilder® HiFi DNA Assembly Master Mix M5520AAVIAL -20 1 x 0.5 ml 2 X
  NEBuilder® Positive Control N2611AVIAL -20 5 x 0.05 ml
  NEBuilder® HiFi DNA Assembly Master Mix M5520AAVIAL -20 5 x 0.5 ml 2 X
Features

Benefits over GeneArt Gibson Assembly and In-Fusion Snap Assembly:

  • Enjoy less screening/re-sequencing of constructs, with virtually error-free, high-fidelity assembly.
  • Join DNA fragments together more efficiently, even with larger fragments or low DNA inputs
  • Use NEBuilder HiFi in successive rounds of assembly, because it removes 5´ and 3´ end mismatches. (Save time by avoiding time-consuming PCR amplification steps.)
  • Bridge two ds-fragments with a synthetic ss-DNA oligo for simple and fast construction (e.g. linker insertion or gRNA library)
  • Use with lower DNA input requirements
  • Switch from other systems easily, because NEBuilder HiFi is compatible with Gibson Assembly®- and In-Fusion- designed fragments
  • No licensing fee requirements from NEB for the NEBuilder products

Benefits over Traditional Cloning:

  • Save time with Simple and Fast Seamless Cloning
  • Use one system for both "standard-size" cloning and larger gene assembly products, up to 11 fragments.
  • Move on with your workflow, because DNA can be used immediately for transformation or as template for PCR or RCA.
  • Adapts easily for multiple DNA manipulations, including site-directed mutagenesis.

Properties & Usage

Materials Required but not Supplied

DNA Polymerase (for generating PCR products):
For generating PCR Products, we recommend Q5® High-Fidelity DNA Polymerase (NEB #M0491) or related products, such as Q5 Hot Start High-Fidelity DNA Polymerase (NEB #M0493) or Q5 Hot Start High-Fidelity 2X Master Mix (NEB #M0494).

LB (Luria-Bertani) plates with appropriate antibiotic. For selection of transformed competent cells, we recommend LB plates with appropriate antibiotic.

Companion Products
Notes
  • To ensure the successful assembly and subsequent transformation of assembled DNAs, NEB recommends the following:

    DNA: PCR product purification is not necessary if the total volume of all PCR products is 20% or less of the assembly reaction volume. Higher volumes of PCR products may reduce the efficiency of high-fidelity DNA assembly and transformation due to the elevated carryover amounts of PCR reaction buffer and unused primers present in the PCR product. Column purification of PCR products may increase the efficiency of both high-fidelity DNA assembly and transformation by 2–10 fold and is highly recommended when performing assemblies of three or more PCR fragments or assembling longer than 5 kb fragments. Purified DNA for assembly can be dissolved in ddH2O (Milli-Q® water or equivalent is preferable), TE or other dilution buffers.

  • Insert: When directly assembling fragments into a cloning vector, the concentration of assembly fragments should be at least 2 times higher than the concentration of vector. For assembly of 4 or more fragments into a vector, we recommend using an equimolar ratio of fragments.

  • Transformation: NEB 5-alpha Competent E. coli (High Efficiency, NEB #C2987) provided with the NEBuilder HiFi DNA Assembly Cloning Kit are recommended for use for assembled products of less than 15kb. It is also possible to use other NEB competent E. coli strains, with the exception of BL21, BL21(DE3), Lemo21(DE3), Nico(DE3), and SHuffle®. When using competent E. coli from a vendor other than NEB, we have been decreased robustness of transformation with high-fidelity DNA assembled products.

  • Electroporation: Electroporation can increase transformation efficiency by several logs. When using the NEBuilder HiFI DNA Assembly Master Mix, use 1μl of the assembled product for electroporation, and plate multiple dilutions.

    Should you require the use of Electrocompetent cells, please use the "Electrocompetent Cells Transformation Protocol"

  • Biology: Some DNA structures, including inverted and tandem repeats, are selected against by E. coli. Some recombinant proteins are not well tolerated by E. coli and can result in poor transformation or small colonies.
FAQs
Tech Tips
Quality Control Assay
Quality Control tests are performed on each new lot of NEB product to meet the specifications designated for it. Specifications and individual lot data from the tests that are performed for this particular product can be found and downloaded on the Product Specification Sheet, Certificate of Analysis, data card or product manual. Further information regarding NEB product quality can be found here.
Change Notifications

NEBuilder HiFi DNA Assembly Master Mix has been reformulated with components containing Recombinant Albumin (rAlbumin) beginning with Lot #10238675. All subsequent (higher number) lots will contain rAlbumin.

NEBuilder HiFi DNA Assembly Mix has been reformulated to be more stable starting with Lot #10111279 and all subsequent (higher number) lots.

Specifications
The Specification sheet is a document that includes the storage temperature, shelf life and the specifications designated for the product. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]
Certificate of Analysis
The Certificate of Analysis (COA) is a signed document that includes the storage temperature, expiration date and quality controls for an individual lot. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]_[Lot Number]
Safety Data Sheets
Legal And Disclaimer

Products and content are covered by one or more patents, trademarks and/or copyrights owned or controlled by New England Biolabs, Inc (NEB). The use of trademark symbols does not necessarily indicate that the name is trademarked in the country where it is being read; it indicates where the content was originally developed. The use of this product may require the buyer to obtain additional third-party intellectual property rights for certain applications. For more information, please email busdev@neb.com.

This product is intended for research purposes only. This product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.

New England Biolabs (NEB) is committed to practicing ethical science – we believe it is our job as researchers to ask the important questions that when answered will help preserve our quality of life and the world that we live in. However, this research should always be done in safe and ethical manner. Learn more.Limited Warranty: The NEBuilder® HiFi Assembly Master Mix and NEBuilder® HiFi DNA Assembly Cloning Kit are warranted to perform according to specifications stated on the certificate of analysis. No other warranty is made, whether express or implied, including any warranty of merchant ability or fitness for a particular purpose. This warranty limits NEB’s and its licensors’ liability to only the price of the product. Neither NEB nor its licensors shall have any responsibility or liability for any special, incidental, indirect or consequential loss or damage whatsoever.

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