| Field | Specification |
|---|---|
| Mfr No | |
| Product Type | |
| Shipping | |
| Source | Recombinant (E. coli) |
| Storage |
DNase I, or Deoxyribonuclease I, is an endonuclease that can digest single-stranded or double-stranded DNA. It hydrolyzes phosphodiester bonds to produce monodeoxynucleotides and oligodeoxynucleotides containing 5'-phosphate groups and 3'-OH groups. The optimal working pH range of DNase I is 7-8. The activity of DNase I depends on Ca2+ and can be activated by divalent metal ions such as Co2+, Mn2+, and Zn2+. In the presence of Mg2+, DNase I can randomly cut any site of double-stranded DNA; in the presence of Mn2+, DNase I can cut the DNA double strand at the same site, forming a blunt end or a sticky end with 1-2 nucleotides protruding, which can be used for the treatment of various RNA samples.
Features
- Recombinant DNAse I from yeast
- RNase-free
- High enzymatic cleavage efficiency.
- More suitable for applications sensitive to RNase.
Applications
Removal of contaminating genomic DNA from RNA samples
Degradation of DNA templates in transcription reactions
Removal of gDNA before RNA extraction or reverse transcription.
Removal of template DNA in in vitro transcription.
Specifications
|
Cat.No. |
14549ES80 / 14549ES90 |
|
Size |
1000 U / 5000 U |
|
Unit definition: |
Using calf thymus DNA as substrate, at 25℃, pH 5.0, the amount of enzyme required to increase the absorbance of the reaction solution at 260 nm by 0.001 within 1 min is defined as 1 activity unit (Kunitz Unit). |
|
Source |
Pichia yeast strain carrying the gene cloned from bovine pancreatic DNase I |
|
Purity |
≥95% |
|
Reaction conditions |
37℃, 15-30 min |
|
Heat inactivation conditions |
Add 2.5 mM EDTA solution and mix well, then incubate at 65℃ for 10 min |
Glycerol Content |
Contains Glycerol |
Components
|
Components No. |
Name |
14549ES80 |
14549ES90 |
|
Recombinant DNase I (RNase-free, Yeast) (5 U/μL) |
200 μL |
1 mL |
|
|
14549-B |
DNase I Reaction Buffer (10×) |
1 mL |
5×1 mL |
Shipping and Storage
This product should be stored at -25~-15℃ for two year.
Figures
1. Strong digestive activity
Figure 1. Plasmid DNA digestion
1 μg of plasmid DNA was digested using different amounts of DNase I from Yeasen and Supplier A. The results showed that the plasmid DNA removal efficiency of 14549ES was better than that of Supplier A.
2. No RNase residue
Figure 2. RNase residue detection
10 U of Yeasen Recombinant DNase I (RNase-free, Yeast) was incubated with RNA substrate at 37°C for 1 h. Agarose gel electrophoresis analysis showed that no residual RNase activity was detected in the three batches of the enzyme preparation, completely eliminating the risk of RNA sample degradation.
3. RNA extraction application verification
Figure 3. RNA extraction application verification
20 U of the enzyme preparation was used to treat 12 pre-treatment samples of mouse liver from different sources. RNA extraction and agarose gel electrophoresis analysis showed that the RNA integrity of the enzyme-treated group was good, indicating that this DNase I can effectively digest DNA without affecting the quality of RNA, and fully meets the technical requirements of RNA extraction experiments.
Store this enzyme at -20°C and avoid repeated freeze-thaw cycles to preserve catalytic activity. The product is shipped Dry Ice and remains stable for up to one year from the date of manufacture when stored under recommended conditions. Aliquoting the stock solution into single-use volumes is recommended for enzymes used infrequently to minimize thermal cycling of the bulk stock.
Removal of contaminating genomic DNA from RNA samples Degradation of DNA templates in transcription reactions Removal of gDNA before RNA extraction or reverse transcription. Removal of template DNA in in vitro transcription.. Always verify compatibility with your specific template, buffer, and downstream workflow.
One unit (U) is defined as the amount of enzyme that degrades 1 µg of DNA or RNA substrate to acid-soluble form in 30 min at 37°C under defined buffer conditions.
This enzyme is produced as Recombinant (E. coli) and supplied as a Research Use Only (RUO) reagent. Each lot is subjected to activity assay, purity assessment by SDS-PAGE, and functional validation prior to release. A Certificate of Analysis (CoA) and Safety Data Sheet (SDS) are available on request.
Nuclease activity typically requires divalent metal ion cofactors (Mg²⁺ or Mn²⁺ at 1–5 mM). Activity is inhibited by chelating agents such as EDTA (≥1 mM), high salt concentrations, and reducing agents such as DTT at elevated concentrations. Heat inactivation (65–75°C for 15 min) is effective for most nucleases, allowing removal of enzyme activity after digestion without column purification.
Yeasen Biotechnology supports custom enzyme solutions across multiple service lines — from GMP-grade bulk supply to directed enzyme engineering. Contact BioHippo to discuss requirements and initiate a project inquiry.
▶ GMP-Grade & Bulk Supply
Select Yeasen enzymes are available in GMP grade, manufactured in an ISO 13485-certified UCF.ME™ ultra-clean molecular enzyme facility with FDA Drug Master File (DMF) support.
- GMP-grade release testing and CoA documentation
- ISO 13485-certified production facility
- Scalable from milligram to multi-gram quantities
- Consistent lot-to-lot activity specifications
▶ Glycerol-Free & Custom Formulation
Glycerol-free enzyme formats are available for applications requiring lyophilization compatibility, liquid handling automation, or direct IVD master mix integration.
- Glycerol-free liquid format (standard and custom buffers)
- Lyophilization-ready enzyme preparation
- Custom reaction buffer optimization for specific assay conditions
- Compatible with freeze-drying workflows for point-of-care formats
▶ Molecular IVD RDC Service
Yeasen's Research and Development Contracting (RDC) team delivers end-to-end solutions for molecular diagnostic product development, covering enzyme selection through clinical validation support.
- Enzyme selection and performance matching
- Primer/probe design and reaction buffer optimization
- Sensitivity, specificity, and precision validation studies
- Stability studies and SNP evaluation
- Instrument platform compatibility assessment
▶ ZymeEditor™ Enzyme Engineering
Yeasen's proprietary ZymeEditor™ directed evolution and rational design platform enables the development of custom enzyme variants with tailored performance characteristics not available in off-the-shelf products.
- Directed evolution for enhanced thermostability, processivity, or fidelity
- Rational design for altered substrate specificity or cofactor requirements
- Library screening from Yeasen's proprietary enzyme variant collection
- Scale-up to commercial quantities upon candidate confirmation
ⓘ Customization services are fulfilled by Yeasen Biotechnology. Lead times and minimum order quantities vary by service type. Contact BioHippo for project scoping and pricing.
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