This product is not tested for salt tolerance, and therefore, data is not available.
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| Voi/SKU | Disponibilità | Prezzo |
|---|---|---|
10 mg | Per conoscere la disponibilità, visualizza il carrello | CHF 66.60 |
100 mg | Per conoscere la disponibilità, visualizza il carrello | CHF 201.00 |
1 g | Per conoscere la disponibilità, visualizza il carrello | CHF 1070.00 |
5 g | Per conoscere la disponibilità, visualizza il carrello | CHF 2190.00 |
Informazioni su questo articolo
biological source
bovine pancreas
Quality Segment
form
lyophilized powder
specific activity
≥400 Kunitz units/mg protein
mol wt
~31 kDa
composition
Protein, ≥85%
technique(s)
DNA extraction: suitable
input
general use sample(s)
solubility
0.15 M NaCl: soluble 5.0 mg/mL, hazy
suitability
suitable for molecular biology
application(s)
diagnostic assay manufacturing
foreign activity
RNase ≤0.02%
shipped in
wet ice
storage temp.
−20°C
General description
- Our DNase I Digests double str and single stranded DNA into oligo and mononucleotides.
- La DNasi pancreatica bovina esiste sotto forma di quattro isozimi con punti isoelettrici (per A, B, C e D): 5,2, 4,96, 5,06 e 4,78. La forma predominante è la A, con quantità minori di B e C e minime di D.
- DNase I structure resembles the structure of to exonuclease III. It includes two central β sheets. ββ Questa struttura è circondata dalle regioni dell′ansa estesa e dell′α-elica. La struttura di questo enzima è simile a quella dell′esonucleasi III.[1]
Application
- Decreases viscosity providing better yields by removing DNA in primary cell isolation:
- Incorporating labelled bases into DNA: DNA nick
- Radioactive labelling
- Bioprocessing applications: DNA removal
- Eliminating genomic DNA from RNA preparations before RT-PCR
- Nick translation
- DNase footprinting
- Actin regulation of actin polymerization in cells, and cell apoptosis
- UV crosslinking of proteins to nucleic acids
Biochem/physiol Actions
Features and Benefits
Physical form
Preparation Note
Analysis Note
Other Notes
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Questo articolo | |||
|---|---|---|---|
| description lyophilized powder, Protein ≥85 %, ≥400 Kunitz units/mg protein | description Type II-S, lyophilized powder, Protein ≥80 %, ≥2,000 units/mg protein | description Type IV, lyophilized powder, ≥2,000 Kunitz units/mg protein | description Type II, lyophilized powder, Protein ≥80 %, ≥2,000 units/mg protein |
| technique(s) DNA extraction: suitable | technique(s) DNA purification: suitable | technique(s) DNA purification: suitable | technique(s) DNA extraction: suitable |
| biological source bovine pancreas | biological source bovine pancreas | biological source bovine pancreas | biological source bovine pancreas |
| specific activity ≥400 Kunitz units/mg protein | specific activity ≥2,000 units/mg protein | specific activity ≥2,000 Kunitz units/mg protein | specific activity ≥2,000 units/mg protein |
| suitability suitable for molecular biology | suitability suitable for molecular biology | suitability suitable for molecular biology | suitability suitable for molecular biology |
| form lyophilized powder | form lyophilized powder | form lyophilized powder | form lyophilized powder |
| application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing |
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Parola di avvertenza
Danger
Codici di pericolo
Avvertenze di sicurezza
Hazard Classifications
Resp. Sens. 1
Classe di stoccaggio
11 - Combustible Solids
Punto di infiammabilità (°F)
Not applicable
Punto di infiammabilità (°C)
Not applicable
DPI (dispositivi di protezione individuale)
Eyeshields, Gloves, type N95 (US)
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What is the salt tolerance of this DNase I?
1 answer-
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I would like to know if this product can be used to eliminate DNA from cells in tissue culture (12 wells chamber slide) before immunofluorescent staining? if it can be used - how?
1 answer-
This product can be used to eliminate DNA from cells in tissue culture. Concentration and incubation time should be optimized based on the specific application.
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HOW CAN I PRESERVE DN25 DILUTED and filtered in culture medium? 4C or -20 C?. It will lose activity?
1 answer-
This product is soluble in 0.15 M NaCl at 5 mg/mL. Solutions prepared at 10 mg/mL in 0.15 M NaCl may lose up to 10% activity when stored for 1 week in aliquots at –20 °C. The same solutions stored in aliquots at 2-8 °C can lose up to 20% activity. Please see the link below to review the product datasheet for additional information:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/233/818/dn25pis-ms.pdfHelpful?
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What is the recommended method for long-term storage of the 1 gram bottle of DN25 in solution?
1 answer-
The user bulletin provides guidance on the storage of DNase I once reconstituted. When stored in aliquots at -20°C, solutions of DNase I at 10 mg/mL in 0.15 M NaCl may lose 10% of activity over a week, while storing the same solutions at 2–8°C can result in a 20% activity loss. Alternatively, maintaining solutions at a minimum concentration of 1 mg protein/mL with 5 mM calcium chloride at -20°C can retain 90% activity for at least a year. Solutions with 0.1 mg protein/mL are less stable and may need gelatin as a stabilizer.
For applications not affected by glycerol, two storage buffer options are available as they do not freeze at -20°C:
• 20 mM sodium acetate (pH 6.5) with 5 mM CaCl2, 0.1 mM phenylmethylsulfonyl fluoride (PMSF), and 50% (v/v) glycerol, containing DNase I at 5 mg/mL.
• 10 mM Tris-HCl (pH 7.5) with 50 mM NaCl, 10 mM MgCl2, 1 mM DTT, and 50% (v/v) glycerol, with DNase I at 2 mg/mL.Helpful?
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Hi I use the DNase during isolation of cells from lung tissue. Do I need to filter the DNase solution before usage?
1 answer-
This is not a sterile product. If sterility is required due to the specific application, solutions may be filter sterilized before use. Please see the link below to review the product datasheet:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/233/818/dn25pis-ms.pdfHelpful?
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I use the DNase when I isolate lung cells from lung. Do I need to filter them before I use? I will culture the isolated lung cells.
1 answer-
Yes, please filter the DNase solution before use in cell culture, preferably with a 0.22 um filter. The powder is not sterilized as provided.
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