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PureRec Duplex-Specific Nuclease (DSN)
Highlights
Highest Specificity: Selectively digests dsDNA and DNA in DNA-RNA hybrids; virtually inactive towards ssDNA or RNA.
Premium Purity: RNase-free, protease-free, and animal-free.
Thermostable: Able to withstand high temperatures without denaturation or loss in activity.
서한형 대리

Zymo Research 제품 담당자

경신과학(주)

영업부

H.P) 010-8832-6303

HanHyung Seo

Zymo Research Brand Manager

Kyongshin scientific Co., Ltd.

Sales Department

H.P) 82)10-8832-6303

제품소개

Highlights

  • Highest Specificity: Selectively digests dsDNA and DNA in DNA-RNA hybrids; virtually inactive towards ssDNA or RNA.
  • Premium Purity: RNase-free, protease-free, and animal-free.
  • Thermostable: Able to withstand high temperatures without denaturation or loss in activity.

Product Description


PureRec Duplex-Specific Nuclease (DSN) is an endonuclease that selectively digests double-stranded DNA (dsDNA) and DNA in DNA-RNA hybrids, exhibiting virtually no activity towards single-stranded DNA (ssDNA) or RNA.

It can discriminate between perfectly matched and non-matched short DNA duplexes. To catalyze cleavage, DSN needs a minimum of 10 bp dsDNA or 15 bp perfectly matched DNA-RNA duplex.

This enzymatic function is reliant upon the presence of Mg2+ ions, with a recommended concentration of 5 mM for most applications.

PureRec DSN is overexpressed and extensively purified from a non-animal source and is free of non-specific nucleases or RNases.

Learn More

Application


  • Remove gDNA and DNA in DNA:RNA hybrids for protein or RNA preparations.
  • Reduce abundant rRNA and globin transcripts to enhance next-generation sequencing (NGS) libraries.
  • Achieve precise single-nucleotide polymorphism (SNP) detection with minimal off-target effects.
  • Enhance signal amplification for accurate virus detection.
  • Improve detection of miRNA and biomarkers.

Technical Specifications

Unit DefinitionOne Kunitz unit causes an increase in absorbance at 260 nm of 0.001 per minute per ml, at 25°C, pH 7.15, when acting on calf thymus DNA.
Concentration1 U/µl
Optimal Temperature60 °C
Reaction Buffer10X DSN Digestion Buffer
500 mM Tris-HCl, 50 mM MgCl2, pH 8.0
Stop Solution2X DSN Stop Solution
10 mM EDTA, pH 8.0
Storage ConditionFor long-term storage, store at -20 °C.
InactivationAdd the 2X DSN Stop Solution to the reaction, to a final concentration of 1X, and incubate at the reaction temperature for 5 minutes.

Resources


Q1: How much DSN should I add to my reaction?
  • This depends on the application. DSN is a highly versatile enzyme, and the input amount can be adjusted to meet specific requirements. The amount of DSN and incubation times will vary based on the desired product. For example, a typical amount of DSN used for the normalization of cDNA libraries ranges from 0.25 to 1 U.
  • To protect ssDNA in a pool of dsDNA/ssDNA, we recommend titrating the enzyme amount to determine the optimal conditions for ssDNA protection.
Q2: What temperature can I use DSN at?

The incubation temperature can be adjusted between 25°C and 70°C, with an optimal temperature of 60°C.

Q3: How do I completely inactivate the DSN after digestion?

DSN is susceptible to EDTA inactivation at concentrations of 5 mM and above. We recommend performing an inactivation step by adding 5 mM EDTA at the reaction temperature for 5 minutes following digestion.

Q4: Can I heat the DSN to inactivate?

DSN is thermally stable and retains activity when heated to 98°C for 10 minutes. We suggest stopping all reactions with DSN by incubating with 5 mM EDTA for 5 minutes at 60°C.

Q5: Can I place a bulk order for DSN?

Yes, we can customize your order request to meet your specific requirements. For bulk ordering, please fill out the form and one of our specialists will be in touch shortly.

주문정보

CAT.No 품명 규격 비고
E1020-200 PureRec DSN 200 U
E1020-1000 PureRec DSN 1000 U