a 3'-end 2'-deoxyribonucleotide-(2,3-dehydro-2,3-deoxyribose 5'-phosphate)-DNA + H2O <=> (2E,4S)-4,5-dihydroxypent-2-enal + a 3'end (2'-deoxyribonucleotide 3'-phosphate)-DNA + H(+)
a 3'-end 2'-deoxyribonucleotide-(2,3-dehydro-2,3-deoxyribose 5'-phosphate)-dna + h2o <=> (2e,4s)-4,5-dihydroxypent-2-enal + a 3'end (2'-deoxyribonucleotide 3'-phosphate)-dna + h(+)