Endonuclease IV, E. coli


A class II apurinic/apyrimidic (AP) enzyme that cleaves 5’ to an AP site by hydrolysis leaving a hydroxyl group at the 3´ terminus and a deoxyribose 5´-phosphate at the 5´ terminus
SKU: EVI Categories: ,
SKU OPTIONS PriceQuantity
EIV-100 2,500 units (10 U/µl) $135.00
EIV-200 10,000 units (10 U/µl) $404.00
EIV-OEM Any Size Please inquire


Endonuclease IV (E. coli) is a class II apurinic/apyrimidic (AP) enzyme that cleaves 5′ to an AP site by hydrolysis, leaving a hydroxyl group at the 3′ terminus and a deoxyribose 5′-phosphate at the 5′-terminus. Endo IV can be used in vivo to repair free radical damage in DNA.


  • DNA structure research
  • Studies of DNA damage and repair
  • Single cell electrophoresis (comet assay)
  • Anti-tumor drug studies

E. coli cells with a cloned nfo gene.

Unit Definition:
One unit of the enzyme relaxes 1µg of partially depurinated, covalently closed supercoiled plasmid DNA in 30 min at 37°C

Storage Buffer:
Supplied in 50% Glycercol, 50 mM Tris-HCl (pH 7.5), 1mM DTT, 0.1 M NaCl, 0.1% Triton X-100

10x Endonuclease IV Buffer
1M NaCl
500 mM Tris-HCl
100 mM MgCl2
10 mM DTT pH 7.9 @ 25°C

Quality Control:
Endonuclease IV is tested in degradation of dsDNA and is free of detectable RNase and double-stranded exonuclease activities.

Recommended Storage Condition: -20°C

1. Izumi, T. et al. (1992) J. Bacteriol. 174, 7711.
2. Levin, J.D. and Demple, B. (1996) Nucleic Acids Res. 24, 885.

Additional information


2,500 units (10 U/µl), 10,000 units (10 U/µl), Any Size

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