As the Polymerase Chain Reaction (PCR) is the most common DNA amplification method in molecular biology, NEB’s product portfolio features a large selection of polymerases geared towards this powerful method. As the first company to sell Taq DNA Polymerase to the research market, the first to discover a PCR-stable, high-fidelity DNA polymerase, and the first to provide reagents for PCR performed in space, NEB has a long history of developing reliable and convenient PCR tools. This commitment has continued with the recent development of OneTaq® DNA Polymerase for robust routine PCR and Q5® High-Fidelity DNA Polymerase for robust, ultra high-fidelity PCR (>280 X Taq fidelity). Both product lines have been developed to tolerate a variety of complex templates without experiencing a loss of performance on high-AT or high-GC targets. A variety of NEB polymerases, including OneTaq, Taq and Q5, also benefit from novel aptamer-based hot start technology that does not require a separate activation step.
Despite the ubiquitous nature of PCR and qPCR, it may not be the best option for all amplification needs. For point of care and other diagnostic applications, sequence-specific isothermal amplification methods, that eliminate the need for thermocycling, have been particularly useful. Instead of heat, these methods typically employ a strand-displacing DNA polymerase, like Bst DNA Polymerase, Large Fragment, to separate duplex DNA. To address some of the limitations of current isothermal amplification techniques, NEB has developed the next generation Bst, Bst 2.0 and a WarmStart® version of this enhanced polymerase, which enables room temperature reaction setup, yet is fully active at temperatures greater than 50°C.
RNA molecules can also be detected and manipulated through amplification via the use of reverse transcriptases (RT), which are RNA-dependent DNA Polymerases. RTs polymerize a strand of DNA that is complimentary to the original RNA template and is referred to as cDNA. This cDNA can then be further amplified through PCR, qPCR or isothermal methods as outlined above or detected in a single reaction using one-step RT-qPCR or RT-LAMP.
Nucleic acid amplification is a foundational process in molecular biology and, as a testament to its utility, new protocols and modifications are being developed constantly. At NEB, our goal is to use our understanding of enzymology, and dedication to providing high-quality products, to offer reagents for all of your applications. Please visit the application pages below to learn more.
TaqMan® is a registered trademark of Roche Molecular Systems, Inc.
SYBR® is a registered trademark of Molecular Probes, Inc.
DNA Amplification, PCR & qPCR includes these areas of focus:
- qPCR & RT-qPCR
- Probe-based qPCR & RT-qPCR
- Dye-based qPCR & RT-qPCR
- Site Directed Mutagenesis
- Isothermal Amplification
- Routine PCR
- High-Fidelity PCR
- PCR & Reaction Cleanup
- RT-PCR & cDNA Synthesis
- cDNA Synthesis
- Whole Genome Amplification
- Specialty PCR
- Extraction-Free PCR
- Hot Start PCR
- Long Range PCR
- Fast PCR
- Multiplex PCR
- Bisulfite Sequencing
- Polymerases for NGS Library Preparation
- Polymerases for DNA Manipulation
FAQs for DNA Amplification, PCR & qPCR
Protocols for DNA Amplification, PCR & qPCR
- Luna® Universal One-Step RT-qPCR Kit Protocol (E3005)
- Luna® Universal Probe One-Step RT-qPCR Kit Protocol (E3006)
- Luna® Universal Probe qPCR Master Mix Protocol (M3004)
- Luna® Universal qPCR Master Mix Protocol (#M3003)
- PCR Optimization (E0555)
- PCR Using NEBNext® High-Fidelity 2X PCR Master Mix (M0541)
- PCR Using Q5® High-Fidelity DNA Polymerase (M0491)
- PCR Using Q5® Hot Start High-Fidelity DNA Polymerase (M0493)
- Protocol for a PCR reaction using NEBNext® Q5® Hot Start HiFi PCR Master Mix (M0543)
- Protocol for a Routine PCR (E0555)
- Protocol for Q5® High-Fidelity 2X Master Mix
- Protocol for Q5® Hot Start High-Fidelity 2X Master Mix
The PCR brochure provides product information on the wide range of DNA polymerases available from NEB, including tools for selection and troubleshooting tips.
- DNA Polymerase Selection Chart
- Luna® One-Step RT-qPCR Troubleshooting Guide
- Luna® qPCR Troubleshooting Guide
- PCR Troubleshooting Guide
- General Guidelines for Successful RNA Purification Using the Monarch Total RNA Miniprep Kit
- Guidance on Choosing Sample Input Amounts when Using the Monarch Total RNA Miniprep Kit
- Guidelines for PCR Optimization with OneTaq® and OneTaq® Hot Start DNA Polymerases
- Guidelines for PCR Optimization with Taq DNA Polymerase
- Guidelines for PCR Optimization with Thermophilic DNA Polymerases
- Optimization Tips for Luna® One-Step RT-qPCR
- Optimization Tips for Luna® qPCR
Other Tools & Resources
This overview will walk you through how the Polymerase Chain Reaction (PCR) works.
Learn the basics of qPCR in this short animation.
NEB offers a variety of DNA polymerases for all of your experimental needs. High-fidelity, multiplex, and fast PCR are just a few of the types of amplification reactions you may need to conduct, and Breton explains which polymerases to choose.
Experiencing amplification frustration? Follow Melanie’s 5 quick and easy tips for PCR setup to improve your yields.
Why do primer melting temperatures matter? How is an annealing temperature calculated? Nicole has answers to these questions & more, in this quick video!