This product is not tested for salt tolerance, and therefore, data is not available.
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| Packungsgröße | SKU | Verfügbarkeit | Preis |
|---|---|---|---|
| 10 mg | Warenkorb auf Verfügbarkeit prüfen | € 55,70 | |
| 100 mg | Warenkorb auf Verfügbarkeit prüfen | € 201,00 | |
| 1 g | Warenkorb auf Verfügbarkeit prüfen | € 899,00 | |
| 5 g | Warenkorb auf Verfügbarkeit prüfen | € 1.830,00 |
Über diesen Artikel
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
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
- Unsere DNase I schließt Doppelstrang- und Einzelstrang-DNA zu Oligo- und Mononukleotiden auf.
- Rinderpankreas-DNase existiert als vier Isozyme mit folgenden isoelektrischen Punkten für A, B, C und D: 5,22; 4,96; 5,06 und 4,78.3. Die vorherrschende Form ist A, mit kleineren Anteilen von B und C und nur einer geringen Menge von D.
- Die Struktur von DNase I ähnelt der Struktur von Exonuklease III. Sie umfasst zwei zentrale β-Faltblätter. Jedes β-Faltblatt besteht aus sechs β-Strängen. Dieser Komplex aus β-Faltblättern ist von umfangreichen Schleifen und α-Helixregionen umgeben. Dieses Enzym weist eine strukturelle Ähnlichkeit zu Endonuklease III auf.[1]
Application
- Verringert die Viskosität und bietet bessere Ausbeuten, indem DNA bei der Primärzellisolation entfernt wird:
- Integrieren von markierten Basen in DNA: DNA-Nick
- Radioaktive Markierung
- Bioprozesstechnik-Anwendungen: DNA-Entfernung
- Entfernen von genomischer DNA aus RNA-Aufbereitungen vor RT-PCR
- In-vitro-Transkription
- Nick-Translation
- DNase-Footprinting
- Aktinregulierung der Aktinpolymerisation in Zellen und Zellapoptose
- UV-Vernetzung von Proteinen mit Nukleinsäuren
- DNase spielt eine Rolle bei der Regulierung der Aktinpolymerisation in Zellen und ist am Apoptoseprozess beteiligt [1]
Biochem/physiol Actions
Features and Benefits
Physical form
Preparation Note
Analysis Note
Other Notes
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| 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 Kunitz units/mg protein | specific activity 1700—2300 U/vial | specific activity ≥60,000 dornase units/mg dry wt |
| technique(s) DNA extraction: suitable | technique(s) DNA purification: suitable | technique(s) DNA extraction: suitable | technique(s) - |
| form lyophilized powder | form lyophilized powder | form powder | form lyophilized |
| application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) - |
| suitability suitable for molecular biology | suitability suitable for molecular biology | suitability suitable for molecular biology | suitability - |
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signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
Lagerklasse
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Protokolle
To standardize a procedure for the enzymatic assay of Deoxyribonuclease I.
Verwandter Inhalt
Find protein research tools to prepare, isolate, and analyze proteins. Organized by how to extract, protect, purify, enrich, modify, and quantify proteins.
Global Trade Item Number
| SKU | GTIN |
|---|---|
| FTP98142 | 04054839230615 |
| FTP98898 | 04054839199660 |
| DN25-5G | 04061833591673 |
| DN25-100MG | 04061835556687 |
| DN25-1G | 04061835556694 |
| DN25-10MG | 04061835544349 |
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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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