Cut Smarter with Restriction Enzymes from NEB
With over 45 years of offering restriction enzymes to the research community, NEB has earned the reputation of being a leader in enzyme technologies. Working continuously to be worthy of that distinction, NEB strives to develop enzymes of the highest purity and unparalleled performance.
- A vial of 6X Purple Load Dye is included with most restriction enzymes.
- Over 210 restriction enzymes are 100% active in a single buffer – rCutSmart™ Buffer.
- >190 restriction enzymes are Time-Saver qualified, meaning you can digest DNA in 5-15 minutes, or digest DNA safely overnight.
- Choose from >275 restriction enzymes, the largest selection commercially available.
- Choose a High-Fidelity (HF®) restriction enzyme, which has been engineered for reduced star activity, rapid digestion (5-15 minutes) and 100% activity in rCutSmart Buffer. A vial of 6X Purple Load Dye is included with every HF restriction enzyme.
- All of our restriction enzymes undergo stringent quality control testing, ensuring the highest levels of purity and lot-to-lot consistency.
Use Enzyme Finder to select restriction enzymes by name, sequence, overhang or type.
Restriction Endonucleases: A
Restriction Endonucleases: B
Restriction Endonucleases: C-G
Restriction Endonucleases: H-M
Restriction Endonucleases: N-O
Restriction Endonucleases: P-R
Restriction Endonucleases: S
Restriction Endonucleases: T-Z
HF®, Nicking, Master Mix, Time-Saver & Other
Restriction Endonuclease Buffers & Diluents
High-Fidelity (HF®) Restriction Endonucleases
Restriction Enzymes for Epigenetic Analysis
Time-Saver™ Qualified Restriction Enzymes
Type II restriction enzymes are most commonly used for molecular biology applications, as they recognize stereotypical sequences and produce a predictable cleavage pattern. Learn more about how Type II REs work.
Type I restriction enzymes are a group of endonucleases that recognize a bipartite sequence, but do not produce a predictable cleavage pattern. Learn more about how Type I REs work.
Type III restriction enzymes are a group of endonucleases that recognize a non-pallindromic sequence, comprising two inversely oriented sites. Learn more about these poorly understood enzymes.
How will Time-Saver™ qualified enzymes save you time? Find out from an NEB scientist.
Restriction enzymes are an integral part of the cloning workflow, for generating compatible ends on fragments and vectors. This animation discusses three guidelines for determining which restriction enzymes to use in your cloning experiment.
NEB has engineered HF® enzymes to eliminate star activity. Learn how, and what this means for your digests.
Let one of NEB's restriction enzyme experts help you improve your technique and avoid common mistakes in digest setup.
Watch as Geoff Wilson, Emeritus Scientist, describes what restriction enzymes are and how they revolutionized molecular biology.
Not getting the cleavage you expected? Let an NEB scientist help you troubleshoot your reaction.
Are you finding unexpected bands in your digestion reaction? Here are some tips to help you determine the cause.
When cutting close to the end of a DNA molecule, make sure you know how many bases to add to the ends of your PCR primers.
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