10104159001

DNase I

grade II, from bovine pancreas

• Synonym(s): Deoxyribonuclease, Deoxyribonucleate 5′-oligonucleotido-hydrolase
• UNSPSC Code: 12352204

Properties

• biological source: bovine pancreas
• Quality Level: 100
• form: lyophilized
• packaging: pkg of 100 mg
• manufacturer/tradename: Roche
• technique(s): DNA extraction: suitable
• optimum pH: ~7.0
• storage temp.: 2-8°C

Description

General description

Bovine pancreatic deoxyribonuclease I (DNase I) is a DNA minor grove-interacting nuclease which shows relatively low specificity. This protein is composed of two central β sheets, each composed of six β-strands. This structure is surrounded by extensive loop and α-helical regions. This enzyme shares structural similarity to exonuclease III. DNase I is one of the most well characterized endonucleases of mammalian origin. It is a double-strand-specific endonuclease that requires bivalent cations for maximal activity.

Application

Isolation procedures for proteins (e.g., membrane proteins).
Bovine pancreatic deoxyribonuclease I (DNase I) has been used for-

• The isolation of cells from lung, skin and tumor samples
• Bacterial DNA extraction from live bacterial cells that are resistant to DNase I †

Unit Definition

One unit is the enzyme activity that causes an increase in the absorbance of 0.001 per minute under assay conditions.

Preparation Note

Activator: Ca²⁺ (0.12 mM) in combination with Mg²⁺ enhances activity [Laskowski (1971); Melgar and Goldthwait (1968)].
Working concentration: 1 mg/ml
Do not vortex while dissolving!
Storage conditions (working solution): Reconstituted in water, the solution can be kept for 2 to 3 days at 2 to 8 °C. Do not vortex during dissolving. Note: Dissolve at least 1 mg/ml.

Other Notes

For life science research only. Not for use in diagnostic procedures.

Safety Information

• Pictograms: GHS08
• Signal Word: Danger
• Hazard Statements: H317,H334
• Precautionary Statements: P261 - P280 - P284 - P304 + P340 - P333 + P313 - P342 + P311
• Hazard Classifications: Resp. Sens. 1 - Skin Sens. 1
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): does not flash
• Flash Point(C): does not flash