As cited in the product listing and datasheet, this product in solution shows an approximate loss of activity of 10% when stored in aliquots at −20 °C for 1 week. Studies at lower dilutions have not been performed. Typically, solutions stored at higher concentrations are the most stable.
D5025
Désoxyribonucléase I from bovine pancreas
Type IV, lyophilized powder, ≥2,000 Kunitz units/mg protein
Synonyme(s) :
DNase I, Désoxyribonucléate-5′-oligonucléotido-hydrolase
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About This Item
Produits recommandés
Source biologique
bovine pancreas
Niveau de qualité
Type
Type IV
Forme
lyophilized powder
Activité spécifique
≥2,000 Kunitz units/mg protein
Poids mol.
~31 kDa
Produit purifié par
chromatography
Composition
Protein, ≥80%
Technique(s)
DNA purification: suitable
Solubilité
0.15 M NaCl: soluble 5.0 mg/mL, clear, colorless
Adéquation
suitable for molecular biology
Application(s)
diagnostic assay manufacturing
diagnostic assay manufacturing
Activité étrangère
Chymotrypsin ≤0.5%
Protease ≤0.05%
RNase ≤0.02%
Conditions d'expédition
wet ice
Température de stockage
−20°C
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Application
Actions biochimiques/physiologiques
Définition de l'unité
Forme physique
Notes préparatoires
Remarque sur l'analyse
Inhibiteur
Mention d'avertissement
Danger
Mentions de danger
Conseils de prudence
Classification des risques
Resp. Sens. 1
Code de la classe de stockage
11 - Combustible Solids
Classe de danger pour l'eau (WGK)
WGK 3
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
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Protocoles
To standardize a procedure for the enzymatic assay of Deoxyribonuclease I.
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Good afternoon, if the stock concentration of 10mg/ml may loose 10% of its activity after one week, I was wondering if it is okey regarding stability to keep 500ug/ml aliquots at -20ºC for several weeks.
1 answer-
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Is Kunitz unit same as unit here? I have seen some papers and they have U/ml for DNase. How can i conver it?
1 answer-
Product D5025, Deoxyribonuclease I is given in Kunitz units. This product is a powder. When reconstituting the product with a solution, for example 15,000 Kunitz units in 1 ml of 0.15 M NaCl the end-user will have 15,000 Kunitz units/ml.
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What concentration of Product D5025, Deoxyribonuclease I (DNase I), is required to remove DNA from solutions?
1 answer-
DNA can be removed from preparations by incubation with 20 - 50 ug DNAse I in the presence of 50 mM Tris-HCl buffer, pH 7.5, 10 mM magnesium chloride, at 37°C. for 60 min.
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What is the Department of Transportation shipping information for this product?
1 answer-
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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How should I prepare a solution of Product D5025, DNAse I?
1 answer-
This enzyme can be reconstituted in 0.15 M NaCl at a concentration of 10 mg/ml.
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How do Deoxyribonuclease I (DNase I), products D5025 and D4527 differ from each other?
1 answer-
Both of these products have the same specific activity (>2000 units/mg protein) for Dnase I. The enzyme impurity levels for each, however, are different. D5025 has the following impurity specification: Chymotrypsin (<0.5%), Protease (<0.05%), and RNase (<0.02%). The impurity specifications for D4527 are: Chymotrypsin (<0.01%), Protease (<0.005%), and RNase (<0.01%).
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Are stock solutions of Product D5025, Deoxyribonuclease I (DNase I), stable?
1 answer-
Solutions of DNAse I (10 mg/ml) in 0.15 M NaCl may lose 10% of its activity when stored for a week in aliquots at -20°C. The same solutions stored in aliquots at 2 - 8°C. lose approximately 20% activity.
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How can I convert units of Product D5025, Deoxyribonuclease I (DNase I), to mass?
1 answer-
The mg of solid for each unit package size will be indicated on the label of the package. For a particular lot, you can calculate the specific activity in units per mg solid by multiplying the specific activity in units per mg protein by the percent protein divided by 100.
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