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    Nb.BsrDI

    Description

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

    Product Source

    An E. coli strain expressing only the large subunit of the BsrDI restriction gene from Bacillus stearothermophilus D70 (Z. Chen).

    Reagents Supplied

    The following reagents are supplied with this product:

    Store at (°C)Concentration
    CutSmart® Buffer-2010X

    Properties and Usage

    Unit Definition

    One unit is defined as the amount of enzyme required to convert 1 µg of supercoiled pUC19 DNA to open circular form in 1 hour at 65°C in a total reaction volume of 50 µl.

    Reaction Conditions

    1X CutSmart® Buffer
    Incubate at 65°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 NEBuffers

    NEBuffer 1.1: 25%
    NEBuffer 2.1: 100%
    NEBuffer 3.1: 100%
    CutSmart® Buffer: 100%

    Diluent Compatibility

    Storage Temperature

    -20°C

    Storage Conditions

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

    Heat Inactivation

    80°C for 20 min

    Methylation Sensitivity

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

    Activity at Temperature

    @37°C: 20%

    Notes

    1. Incubation at 37°C results in 20% activity.

    References

    1. Song, Q. et al. (2010). Anal. Chem. [Epub ahead of print].
    2. Zhang, P. et al. (2010). Protein Expr. Purif. 69, 226-234. [Epub 2009 Sep 9].

    FAQs

    1. My enzyme used to come with another NEBuffer, but CutSmart™ Buffer is now recommended?  Why?
    2. What effect does BSA have on the performance of NEB’s restriction enzymes when included in the new buffers?
    3. How can I access the old NEBuffer Activity Chart?
    4. Why is my Restriction Enzyme not cutting DNA?
    5. Why do I see a DNA smear on an agarose gel after a restriction digest?
    6. Why do I see additional DNA bands on my gel after a restriction digest?
    7. How many nucleotides do I have to add adjacent to the RE recognition site in order to get efficient cutting?

    Protocols

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

    Datacards

    The Product Summary Sheet, or Data Card, includes details for how to use the product, as well as details of its formulation and quality controls. The following file naming structure is used to name the majority of these document files: [Catalog Number]Datasheet-Lot[Lot Number]. For those product lots not listed below, please contact NEB at info@neb.com or fill out the Technical Support Form for appropriate document.

    Selection Charts

    Usage Guidelines & Tips

    Troubleshooting Guides

    Interactive Tools

    Quality Control

    Quality Control Assays

    The 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.

    Certificate of Analysis

    The Certificate of Analysis (COA) is a signed document that includes the storage temperature, expiration date and quality control's for an individual lot. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]_[Lot Number]

    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]

    Safety Data Sheet

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

    Datacards

    The Product Summary Sheet, or Data Card, includes details for how to use the product, as well as details of its formulation and quality controls. The following file naming structure is used to name the majority of these document files: [Catalog Number]Datasheet-Lot[Lot Number]. For those product lots not listed below, please contact NEB at info@neb.com or fill out the Technical Support Form for appropriate document.