Advanced Search



DNase I recombinant

ROCHE/04536282001 - grade I, from bovine pancreas, expressed in Pichia pastoris

Product Type: Chemical

Catalog Number PKG Qty. Price Quantity
45-4536282001 10000 units
$142.00
1/EA
Add To Favorites

 

application(s) sample preparation
biological source bovine pancreas
color white to light yellow
concentration ≥70-90%
foreign activity Proteases, none detected
  RNase, none detected
form lyophilized
manufacturer/tradename Roche
mol wt 39  kDa
NCBI accession no. NM_174534 
packaging pkg of 2 × 10,000 U
Quality Level 100 
recombinant expressed in Pichia pastoris
solubility water: soluble
specific activity (>10,000 U/bottle according to Kunitz (+25°C; DNA as substrate).)
storage temp. 2-8°C
suitability suitable for molecular biology
technique(s) protein extraction: suitable
UniProt accession no. P00639  
Application: • DNase I, recombinant, grade I is used for:Eliminating DNA during protein isolation procedures
• Analysis of chromatin structure
• Eliminating DNA during sample preparation
Features and Benefits: Contents
Lyophilizate
General description: Properties: Double-strand-specific endonuclease that requires bivalent cations for maximal activity.
Activity: 10,000U/bottle according to Kunitz (+25°C; DNA as substrate).
Unit definition: One unit is the enzyme activity that causes an increase in the absorbance of 0.001 per minutes under assay conditions.
General description: Degrades Single- and Double-Stranded DNA; Double Stranded activity requires bivalent cations for maximal activity.
Other Notes: For life science research only. Not for use in diagnostic procedures.
Preparation Note: Activator: The enzyme requires divalent cations for maximal activity. The specificity of the reaction depends on the nature of the cation used. In the presence of Mg2+ DNase I causes single-stranded nicks in dsDNA, while in the presence of Mn2+ the enzyme produces double-stranded breaks.
Storage conditions (working solution): Long-term Storage of the Dissolved Enzyme

The solvent generally recommended for DNase I is water. When DNase I is reconstituted in water, the solution can be kept for 2 days at 2 to 8 °C and for 1 month at -15 to -20 °C. For best results, prepare appropriate aliquots and avoid repeated freezing and thawing. However, for long-term storage, carefully dissolve DNase I in one of the buffers listed below. In buffer 1, the enzyme will be stable for several weeks. The enzyme will be stable for at least 18 months if it is dissolved in buffer 2, 3, or 4 and stored at the recommended temperatures.

Information note: Do not vortex the enzyme while dissolving!
Buffer 1: 20 mM Tris-HCl, 20 mM MgCl2, 5 mM CaCl2, 0.1 mM dithioerythritol, 0.1 mM EDTA, 50% (v/v) glycerol, pH 8. Store this solution at -15 to-25 °C; it will not freeze at this temperature and will be stable for several weeks.
Buffer 2: 20 mM Tris-HCl, 50 mM NaCl, 1 mM dithioerythritol, 100 μg/mL BSA, 50% glycerol (v/v), pH 7.6. Store this solution at -15 to -25 °C for up to 18 months; it will not freeze at this temperature.
Buffer 3: 20 mM Tris-HCl, 1 mM MgCl2, 50% (w/v) glycerol, pH 7.5. Store this solution at -15 to -25 °C for up to 18 months; it will not freeze at this temperature.
Buffer 4: 20 mM Tris-HCl, 1 mM MgCl2, pH 7.5. Aliquot in appropriate amounts (e.g., 10 μl), freeze the aliquots quickly on dry ice, and store at -60 °C or below for up to 18 months. Thaw only the amount needed for each experiment. Do not refreeze. Discard any leftover thawed solution.
Storage and Stability: Tightly closed. Dry.
Unit Definition: One unit, according to Kunitz, is the enzyme activity that under assay conditions causes an absorbance increase at 260 nm of 0.001/minute in 1 ml. Volume activity is determined in 0.1 M sodium acetate, 5 mM MgSO4, pH 5.0.
Assay mixture: Calf thymus DNA (100 μg) is incubated with 20 to 50 U DNase I at +25 °C.
The increase in absorbance is measured at 260 nm.

Information Note: These conditions are used for the determination of activity,according to Kunitz, since the Kunitz assay results in high reproducibility and sensitivity. When using this enzyme for normal experimental purposes, Roche recommends using incubation buffers that are appropriate for a given application, e.g., as mentioned in the standard literature (Sambrook et al., Curr. Prot. Mol. Biol., etc.).
activity specific activity: (>10,000 U/bottle according to Kunitz (+25°C; DNA as substrate).)
Storage Temp. 2-8°C
Enzyme Commission (EC) Number 3.1.21.1   ( BRENDA  | IUBMB  )
UNSPSC 12352200

The following items have been added to your cart:

Choose a favorite list for this item:

Catalog Number Description Price
$

Returns/Order support

Please fill out the form below if you want to request order support from Krackeler Scientific.


Quick Order

* Required


New Year Price Updates

We are currently working diligently to update our website pricing information for the New Year. If you place an order, you will be acknowledged with any corrected pricing. If you'd like the most current information sooner, please don't hesitate to drop us an email or give us a call and we'd be happy to assist. Thank you for your patience while we are updating.

800-334-7725
office@krackeler.com


Play Video

To Request a Quote

  1. Search or Browse for items and add to them to your Shopping Cart.
  2. Click the "Request Quote" button at the bottom of the Shopping Cart page.
  3. Fill out required fields.
  4. Optionally you can convert to standard checkout mode by choosing a payment type.
  5. Click "Request Quote" at the bottom of the page.

You will be contacted with a quote.

To Order From a Quote

  1. Register and login to the website.
  2. Receive a quote from your sales representative or customer service.
  3. Have your copy of the quote in hand.
  4. Visit our quote module to search for your quote.
Back to Top