Product Class: Restriction Endonuclease

Nt.BsmAI
neb31 cloned at NEB recombinant dil_A 37 65 Heat CpG

Nt.BsmAI has been reformulated with Recombinant Albumin (rAlbumin) beginning with Lot #10263882. Learn more.

We are excited to announce that all reaction buffers are now BSA-free. NEB began switching our BSA-containing reaction buffers in April 2021 to buffers containing Recombinant Albumin (rAlbumin) for restriction enzymes and some DNA modifying enzymes. Find more details at www.neb.com/BSA-free.

NEB restriction endonuclease that recognizes the sequence GTCTCN^N
Isoschizomers | Single Letter Code

Product Introduction

  • 100% activity in rCutSmart™ Buffer (over 210 enzymes are available in the same buffer) allowing for easier double digests
  • This is a nicking endonuclease
  • Generates DNA molecules that are “nicked”, rather than cleaved
  • Nicking Enzyme Cut Site: GTCTC (1/none)
     
Catalog # Size Concentration
R0121S 500.0 units 10000 units/ml

Featured Videos

View Video Library
  • Nicking Endonucleases (Nicking Enzymes)

    What are Nicking Enzymes and How are They Used?

  • ReduceStarActivity_video_thumb

    Reduce Star Activity with High-Fidelity Restriction Enzymes

  • StandardREProtocol_video_thumb

    Standard Protocol for Restriction Enzyme Digests

  • NEBTVEp15VLthumb280x210

    NEB® TV Ep. 15 – Applications of Restriction Enzymes

  • cuttingclose_video_thumb

    Restriction Enzyme Digest Protocol: Cutting Close to DNA End

  • dnasmear_video_thumb

    Restriction Enzyme Digestion Problem: DNA Smear on Agarose Gel

  • EnzymeNotCutting_video_thumb

    Why is My Restriction Enzyme Not Cutting DNA?

  • TooManyBands_video_thumb

    Restriction Enzyme Digest Problem: Too Many DNA Bands

  • nebcloner_dd_demo_thumb

    Double Digestion with NEBcloner

Product Information

Description

Nt.BsmAI is a nicking endonuclease that cleaves only one strand of DNA on a double-stranded DNA substrate.

Product Source

An E. coli strain expressing an altered form of the BsmAI restriction genes from Bacillus stearothermophilus A664
This product is related to the following categories:
Nicking Endonucleases Products,
Restriction Endonucleases: N-O Products,

Reagents Supplied

Reagents Supplied

The following reagents are supplied with this product:

NEB # Component Name Component # Stored at (°C) Amount Concentration

Properties & Usage

Unit Definition

One 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.

Reaction Conditions

1X rCutSmart™ Buffer
Incubate at 37°C

1X rCutSmart™ Buffer
50 mM Potassium Acetate
20 mM Tris-acetate
10 mM Magnesium Acetate
100 µg/ml Recombinant Albumin
(pH 7.9 @ 25°C)

Activity in NEBuffers

NEBuffer™ r1.1: 100%
NEBuffer™ r2.1: 50%
NEBuffer™ r3.1: 10%
rCutSmart™ Buffer: 100%

Diluent Compatibility

Storage Buffer

10 mM Tris-HCl
50 mM NaCl
1 mM DTT
0.1 mM EDTA
200 µg/ml Recombinant Albumin
50% Glycerol
pH 7.4 @ 25°C

Heat Inactivation

65°C for 20 minutes

Methylation Sensitivity

dam methylation: Not Sensitive
dcm methylation: Not Sensitive
CpG Methylation: Blocked

Product Notes

  1. To see how this enzyme (along with other nicking enzymes) performs at different temperatures, please visit Effect of Various Temperatures of Different Nicking Endonucleases.
  2. Blocked by CpG methylation.

References

  1. Song, Q. et al. Anal. Chem. [Epub ahead of print].
  2. Zhang, P. et al. Protein Expr. Purif. 69, 226-234. [Epub 2009 Sep 9].

Protocols, Manuals & Usage

Protocols

  1. Optimizing Restriction Endonuclease Reactions
  2. Restriction Digest Protocol
  3. Double Digest Protocol with Standard Restriction Enzymes

Usage & Guidelines

Tools & Resources

Selection Charts

Web Tools

FAQs & Troubleshooting

FAQs

  1. 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?
  2. What is the activity of nicking enzymes at different temperatures?
  3. Is this enzyme sensitive to dam, dcm or mammalian CpG methylation?
  4. Can you tell me more about the switch from BSA to Recombinant Albumin (rAlbumin) in NEBuffers?

Quality, Safety & Legal

Quality Assurance Statement

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.

Specification Change Notifications

Nt.BsmAI has been reformulated with Recombinant Albumin (rAlbumin) beginning with Lot #10263882. For additional information, please visit at NEB Restriction Enzyme formulations with Recombinant Albumin (rAlbumin).

Effective November 22, 2024, concentration is 10,000 u/ml. 

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 DataSheets

The following is a list of Safety Data Sheet (SDS) that apply to this product to help you use it safely.

Legal and Disclaimers

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.

Other Products You May Be Interested In