Dna cutting enzymes used in the repair of dna damage


Asked by admin @ in Biology viewed by 267 People


In nucleotide excision repair, damaged dna is excised by what enzyme(s)? in nucleotide excision repair, damaged dna is excised by what enzyme(s)? ligase nuclease dna polymerases primase helicase

Answered by admin @



The correct answer is helicase and nuclease.


 


Nucleotide excision repair is a mechanism for DNA repair which removes DNA damage often induced by ultraviolet light (UV). The mechanism includes recognition of damage, dual incision, repair, and ligation.


The step of incision occurs via enzyme which has helicase activity (unwind DNA and cut it). The same enzyme also has endonuclease activity (removal of a damage-containing DNA).


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