Deoxyribonuclease I (DNase I) is an endonuclease that degrades doubleand single-strand DNA and chromatin. It functions by hydrolyzing phosphodiester linkages, producing mono and oligonucleotides with a 5'-phosphate and a 3'-hydroxyl group. Ribonuclease has been reduced to non-detectable levels. Its activity depends on Mg2+ or Mn2+ ion. DNase I with Mg2+ cuts randomly double strand DNA at any site, DNase I with Mn2+ cuts double strand DNA at the same site to form sticky-end with 1-2 nucleotide or form blunt-end.
Unit DefinitionOne unit is the amount of enzyme required to completely degrade 1 μg pBR322 plasmid DNA in 10 minutes at 37°C.
Sourcepurified from bovine pancreas


Contents& storage

Molecular Weight:

32 kDa (monomer)

Activity Test Condition:
40 mM Tris-HCl (pH8.0), 10 mM MgSO4, 1 mM CaCl2, 1 μg of pBR322 DNA
Free of other DNA endonucleases and exonucleases, free of RNase
Storage Buffer:
50 mM Tris-acetate (pH 7.5), 10 mM CaCl2, 50% (v/v)glycerol
10×Reaction Buffer:
100 mM Tris-HCl (pH7.5 at 25 °C), 100 mM MgCl2, 1 mM CaCl2


DNase I (3 units/μl)1500 units
10×DNase I Reaction Buffer2×1 ml
200 mM EDTA1 ml

Write a review

Please login or register to review

DNase I (RNase-free )

  • Views: 248
  • Product Code: GD201
  • Availability: In Stock
  • $175.00

Available Options