|500 units ( 5000 units/ml )||-||Unavailable in your region|
DescriptionNt.BsmAI is a nicking endonuclease that cleaves only one strand of DNA on a double-stranded DNA substrate.
Product SourceAn E. coli strain expressing an altered form of the BsmAI restriction genes from Bacillus stearothermophilus A664
The following reagents are supplied with this product:
|Store at (°C)||Concentration|
Properties and Usage
Unit DefinitionOne unit is defined as the amount of enzyme required to convert 1 µg of supercoiled plasmid DNA to open circular form in 1 hour at 37°C in a total reaction volume of 50 µl.
1X CutSmart® Buffer
Incubate at 37°C
1X CutSmart® Buffer:
50 mM Potassium Acetate
20 mM Tris-acetate
10 mM Magnesium Acetate
100 μg/ml BSA
pH 7.9 @ 25°C
Activity in NEBuffersNEBuffer 1.1: 100%
NEBuffer 2.1: 50%
NEBuffer 3.1: 10%
CutSmart® Buffer: 100%
10 mM Tris-HCl
50 mM NaCl
1 mM DTT
0.1 mM EDTA
200 μg/ml BSA
pH 7.4 @ 25°C
Heat Inactivation65°C for 20 min
dam methylation: Not Sensitive
dcm methylation: Not Sensitive
CpG Methylation: Blocked
Quality Control AssaysThe following Quality Control Tests are performed on each new lot and meet the specifications designated for the product. Individual lot data can be found on the Product Summary Sheet/Datacard or Manual which can be found in the Supporting Documents section of this page. Further information regarding NEB product quality can be found here.
- Exonuclease Activity (Radioactivity Release):
The product is tested in a reaction containing a radiolabeled mixture of single and double-stranded DNA. After incubation for 4 hours the exonuclease activity is determined by the % release of radioactive nucleotides.
- Non-Specific DNase Activity (16 hour):
The product is tested for non-specific nuclease degradation in a reaction containing a DNA substrate. After incubation for 16 hours there is no detectable degradation of the DNA substrate as determined by agarose gel electrophoresis.
This product is covered by one or more patents, trademarks and/or copyrights owned or controlled by New England Biolabs, Inc (NEB).
While NEB develops and validates its products for various applications, the use of this product may require the buyer to obtain additional third party intellectual property rights for certain applications.
For more information about commercial rights, please contact NEB's Global Business Development team at email@example.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.
- To see how this enzyme (along with other nicking enzymes) performs at different temperatures, please visit Effect of Various Temperatures of Different Nicking Endonucleases.
- Song, Q. et al. Anal. Chem. [Epub ahead of print].
- Zhang, P. et al. Protein Expr. Purif. 69, 226-234. [Epub 2009 Sep 9].
- What effect does BSA have on the performance of NEB’s restriction enzymes when included in the new buffers?
- How can I access the old NEBuffer™ Activity Chart?
- I tested your restriction enzyme on the substrate DNA recommended by NEB, and it appears to be active, however it does not digest my DNA. What could be the reason?
- Why is my Restriction Enzyme not cutting DNA?
- Why do I see a DNA smear on an agarose gel after a restriction digest?
- Why do I see additional DNA bands on my gel after a restriction digest?
- How many nucleotides do I have to add adjacent to the RE recognition site in order to get efficient cutting?
- What is the activity of nicking enzymes at different temperatures?
- Alphabetized List of Recognition Specificities
- Buffer and Diluent Formulation Table
- Compatible Cohesive Ends and Generation of New Restriction Sites
- Cross Index of Recognition Sequences
- Dam-Dcm and CpG Methylation
- Effect of Various Temperatures on Nicking Endonucleases
- Enzymes with Nonpalindromic Sequences
- Frequencies of Restriction Sites
Usage Guidelines & Tips
- Activity at 37°C for Restriction Enzymes with Alternate Incubation Temperatures
- Activity of Restriction Enzymes in PCR Buffers
- Cleavage Close to the End of DNA Fragments
- Digestion of Agarose-Embedded DNA: Info for Specific Enzymes
- Double Digests
- Heat Inactivation
- Megabase Mapping
- Restriction Endonucleases - Survival in a Reaction
- Restriction Enzyme Diluent Buffer Compatibility
- Restriction Enzyme Tips
- Single Letter Codes
- Star Activity